Steven Morrison

757-683-4464

2154 HEALTH SCIENCES BUILDING
NORFOLK, 23529

Ph.D. in Motor Control, Pennsylvania State University, (1997)

Other in Motor Control and Biomechanics, Otago University, (1991)

B.S. in Physiology, Otago University, (1988)

Other in Motor Control, Biomechanics, Exercise Physiology, Otago University, (1988)

Contracts, Grants and Sponsored Research

Morrison, S., Grunsfeld, A., Russell, D. and Thomas, K. " Assessment of Motor Function in Older Adults with Parkinson’s disease." $70,000. Local. November 2017 - December 2021
Morrison, S., Samulski, B. S., Kakar, R., Diawara, N., Russell, D. and Iftekharuddin, K. M. "Age-Related Changes in Trunk and Head Control during Balance and Gait and the Implications for Falls" $1,879,707. Federal. -
Audette, M. and Morrison, S. "Alzheimer's Association Research Grant Award " $150,000. Private. March 2017 - June 2020
Morrison, S., Russell, D., Molenaar, P., Neumann, S., Sosnoff, J. and Newell, K. "Predicting Falls Risk from Inter- and Intra-individual Neuromotor Variability" $1,937,531. Federal. -
Morrison, S. "POISED (Precision Outreach Intervention, Screening, Surveillance and Exercise for Falls Prevention in Diabetes)" $9,000. Higher Education. July 1, 2017 - June 30, 2018
Morrison, S. "POISED (Precision Outreach Intervention, Screening, Surveillance and Exercise for Falls Prevention in Diabetes)" $485,000. State. July 1, 2015 - June 30, 2018
Morrison, S. "Examination of The Foot Core System In Those With Plantar Fasciitis" $800. Other. January 1, 2017 - December 31, 2017
Morrison, S. and Russell, D. "Predicting Mid-Life Health Status from Inter- and Intra-individual Neuromotor Variability" $1,929,014. Federal. -
Morrison, S. "Poised (Precision Outreach Intervention, Surveillence And Exercise For Falls Prevention Prince William)" $9,000. Higher Education. July 1, 2016 - June 30, 2017
Morrison, S., Russell, D., Grunsfeld, A. and Thomas, K. "Assessment of Daily Motor Function in Older Adults with Parkinson’s disease" $200,000. Local. -
Morrison, S., Walker, M., Colberg-Ochs, S. R., Diawara, N., Sosnoff, J. and Kuzma, M. "The Benefits of Targeted Exercises for Reducing Falls in Persons with Multiple Sclerosis." $390,327. Private. -
Morrison, S., Walker, M., Colberg-Ochs, S. R. and Diawara, N. "Evidence-based fall prevention in Multiple Sclerosis." $600,000. Federal. -
Morrison, S. "Relation between Cognitive Function, Walking Ability and Balance for Adults with Autism Spectrum Disorders and Down’s syndrome" $10,000. Old à£à£Ö±²¥Ðã University. January 2015 - June 2016
Morrison, S., Colberg-Ochs, S. R., Diawara, N., Bourcier, M., Parson, H. K. . and Vinik, A. I.. "Impact of Supervised vs. Home-Based Exercise Training on Gait, Balance, and Falls Risk in Type 2 Diabetes" $599,999. Private. July 1, 2012 - June 30, 2016
Morrison, S. "Assessing and Preventing Falls in Multiple Sclerosis (MS): An Integrative Approach" $50,000. Old à£à£Ö±²¥Ðã University. February 2014 - December 2015
Colberg-Ochs, S. R., Vinik, A. I.., Morrison, S., Handel, R. and Neumann, S. "Development of a Quality of Life Tool Sensitive to Cognitive and Physical Measures of Fatigue " $185,053. Federal. August 2011 - July 2013
Vinik, A. A., Morrison, S. and Parson, H. "A Randomized, Double-blind, Placebo-Controlled, Cross-over Study on the Effect of Pregabalin on Pain Related to Walking in Patients with Diabetic Peripheral Neuropathy" $576,000. June 2011 - June 2013
Ringleb, S. I., Watson, G. S., Morrison, S. and Bliss, J. P. "Development of Virtual Reality Tools for Assessment of Return-to-Duty Status following Mild Traumatic Brain Injury (mTBI)" $270,000. Old à£à£Ö±²¥Ðã University. 2010 - 2012
Colberg-Ochs, S. R., Morrison, S., Swain, D. P., Vinik, A. I.. and Parson, H. K. . "Protective Health Effects of Differing Types and Intensities of Exercise Training in Individuals with Type 2 Diabetes" $600,000. Private. July 1, 2008 - June 30, 2011
Ringleb, S. I., Swain, D. P. and Morrison, S. "Development and Validation of Physical Performance Prediction Model" $395,000. Old à£à£Ö±²¥Ðã University. 2007 - 2010
Morrison, S. "Dynamic postural stability and falls prediction in older people during walking in real world environments" $656,574. 2007 - 2009
Ringleb, S. I., Swain, D. P., Onate, J. A. and Morrison, S. "Development and Validation of a Physical Performance Prediction Model" $542,000. July 2007 - September 2009
Morrison, S. "Movement research facility" $275,000. Old à£à£Ö±²¥Ðã University. - 2008
Colberg-Ochs, S. R., Morrison, S., Vinik, A. I.., Mariano, M., Parson, H. K.. and Walker, M. L.. "Dynamic Medical Measures: Creating a Model to Study the Neuropathic Process in Diabetes and Normal Aging" $80,000. Old à£à£Ö±²¥Ðã University. January 1, 2008 - September 30, 2008
Morrison, S. "Remote (telemetry) sensing of running and athletic performance" $102,000. 2005 - 2006
Morrison, S. "Awarded to facilitate the development of a software forward dynamics model for the simulation and prediction of recovery from trip-related falls" $16,000. - 2005
Morrison, S. "Awarded to facilitate the purchase of real-time high-speed motion capture equipment for use in for biomechanics in sport and rehabilitation" $43,000. - 2005
Morrison, S. "Muscle to movemen: Muscle function changes during posture and gait" $67,000. - 2005
Morrison, S. "Dynamic of tremor in the neurologically healthy, older adults" $28,000. - 2002

Articles

Morrison, S., Reilly, N., Schussler, E. and Kerr, G. (2023). The effect of standing posture on amplitude and variability of postural tremor in Parkinson's disease.. Neuroscience letters 805 , pp. 137220.
Estep, A., Morrison, S., Caswell, S. V., Ambegaonkar, J. P., Vaz, J. R. and Cortes, N. (2023). Multifactorial Exercise Intervention Decreases Falls Risk in High-risk and Low-risk Older Adults.. Sports health , pp. 19417381231158658.
Twiddy, H. M., Wilson, P., Swain, D. P., Branch, J. David., Morrison, S. and Reynolds, L. (2023). The association of moderate-to-vigorous and light-intensity physical activity on static balance in middle-aged and older-aged adults.. Aging clinical and experimental research 35 (3) , pp. 541-550.
Vinik, A., Vinik, E., Lai, Y., Morrison, S., Colberg-Ochs, S. R., Neumann, S. and Edwards, J. (2022). Imbalance in Cardiac Autonomic Nervous System Mediates Fatigue. Medical Research Archives 10 (2).
Morrison, S., Armitano-Lago, C., Rynders, C. A. and Sosnoff, J. J. (2022). Changes in trunk and head acceleration during the 6-minute walk test and its relation to falls risk for adults with multiple sclerosis.. Experimental brain research 240 (3) , pp. 927-939.
Henderson, T. T., Thorstensen, J. R., Morrison, S., Tucker, M. G. and Kavanagh, J. J. (2022). Physiological tremor is suppressed and force steadiness is enhanced with increased availability of serotonin regardless of muscle fatigue.. Journal of neurophysiology 127 (1) , pp. 27-37.
Prebor, J., Armitano-Lago, C., Samulski, B. S. and Morrison, S. (2021). Chewing entrains cyclical actions but interferes with discrete actions in children. Journal of Motor Behavior 53 (3) , pp. 364-372.
Morrison, S., Moxey, J., Reilly, N., Russell, D., Thomas, K. M. and Grunsfeld, A. A. (2021). The relation between falls risk and movement variability in Parkinson's disease.. Experimental brain research 239 (7) , pp. 2077-2087.
Samulski, B. S., Prebor, J., Armitano-lago, C. and Morrison, S. (2020). Age-related changes in neuromotor function when performing a concurrent motor task. . Experimental Brain Research 238 (3) , pp. 565-574.
Armitano-Lago, C., Morrison, S., Hoch, H., Bennett, H. J. and Russell, D. R. (2020). Anterior cruciate ligament reconstructed individuals demonstrate slower reactions during a dynamic postural task. Scand J Med Sci Sports 30 (8) , pp. 1518-1528.
Samulski, B. S., Prebor, J., Armitano-Lago, C. and Morrison, S. (2020). Age-related changes in neuromotor function when performing a concurrent motor task.. Experimental brain research.
Vinik, E. J., Vinik, A. I., Neumann, S. A., Lamichhane, R., Morrison, S., Colberg, S. R., Lai, Y. C., Paulson, J., Handel, R., Casellini, C., Hodges, K., Edwards, J. and Parson, H. K. (2019). Development and Validation of the Norfolk Quality of Life Fatigue Tool (QOL-F): A New Measure of Perception of Fatigue.. Journal of the American Medical Directors Association.
Armitano, C., Bennett, H., Haegele, J. A. and Morrison, S. (2019). Assessment of the gait-related acceleration patterns in adults with autism spectrum disorder.. Gait & posture 75 , pp. 155-162.
Keogh JWL, O'Reilly, S., O'Brien, E., Morrison, S. and Kavanagh, J. J. (2019). Can Resistance Training Improve Upper Limb Postural Tremor, Force Steadiness and Dexterity in Older Adults? A Systematic Review.. Sports medicine (Auckland, N.Z.) 49 (8) , pp. 1199-1216.
Morrison, S., Kavanagh, J. J. and Newell, K. M. (2019). Cross-limb dynamics of postural tremor due to limb loading to fatigue: neural overflow but not coupling.. Journal of neurophysiology 122 (2) , pp. 572-584.
Pope, J., Helwig, K., Morrison, S., Estep, A., Caswell, S., Ambegaonkar, J. and Cortes, N. (2019). Multifactorial exercise and dance-based interventions are effective in reducing falls risk in community-dwelling older adults: A comparison study.. Gait & posture 70 , pp. 370-375.
Bennett, H., Vega-Valenzuela, K., Fleenor, K., Morrison, S. and Haegele, J. A. Walking Biomechanics and Energetics of Individuals with a Visual Impairment: A Preliminary Report.. Human Movement Sciences.
Samulski, B. S., Prebor, J., Armitano, C. and Morrison, S. (2019). Coupling of motor oscillators - What really happens when you chew gum and walk?. Neuroscience letters 698 , pp. 90-96.
Wood, T. A., Morrison, S. and Sosnoff, J. J. (2019). The Role of Neck Musculature in Traumatic Brain Injuries in Older Adults: Implications From Sports Medicine.. Frontiers in medicine 6 , pp. 53.
Morrison, S. and Newell, K. M. (2019). Intraindividual Variability of Neuromotor Function Predicts Falls Risk in Older Adults and those with Type 2 Diabetes.. Journal of motor behavior 51 (2) , pp. 151-160.
Armitano, C., Morrison, S. and Russell, D. (2018). Coordination stability between the legs is reduced after anterior cruciate ligament reconstruction.. Clinical biomechanics (Bristol, Avon) 58 , pp. 28-33.
Morrison, S., Armitano, C., Raffaele, C. T., Deutsch, S. I., Neumann, S. A., Caracci, H. and Urbano, M. R. (2018). Neuromotor and cognitive responses of adults with autism spectrum disorder compared to neurotypical adults.. Experimental brain research 236 (8) , pp. 2321-2332.
Morrison, S., Simmons, R., Colberg, S. R., Parson, H. K. and Vinik, A. I. (2018). Supervised Balance Training and Wii Fit-Based Exercises Lower Falls Risk in Older Adults With Type 2 Diabetes.. Journal of the American Medical Directors Association 19 (2).
Estep, A., Morrison, S., Caswell, S., Ambegaonkar, J. and Cortes, N. (2018). Differences in pattern of variability for lower extremity kinematics between walking and running.. Gait & posture 60 , pp. 111-115.
Morrison, S., Newell, K. M. and Kavanagh, J. J. (2017). Differences in postural tremor dynamics with age and neurological disease. Experimental Brain Research 235 (6) , pp. 1719-1729.
Thomas, K., Russell, D., L. Van Lunen, B., Colberg, S. R.. and Morrison, S. (2017). The impact of speed and time on gait dynamics. Human Movement Science 54 , pp. 320 - 330.
Estep, A., Morrison, S., Caswell, S., Ambegaonkar, J. and Cortes, N. (2017). Differences in pattern of variability for lower extremity kinematics between walking and running.. Gait & posture 60 , pp. 111-115.
Armitano, C. N., Morrison, S. and Russell, D. (2017). Upper body accelerations during walking are altered in adults with ACL reconstruction.. Gait & posture 58 , pp. 401-408.
Morrison, S., Newell, K. M. and Kavanagh, J. J. (2017). Differences in postural tremor dynamics with age and neurological disease.. Experimental brain research 235 (6) , pp. 1719-1729.
Hoch, M., Morrison, S. and Hoch, J. Somatosensory deficits following ACL surgery. Lower Extremity Review May.
Russell, D., Kelleran, K. and Morrison, S. (2016). Bracing the trunk and neck in young adults leads to a more aged-like gait. Gait Posture 49 , pp. 388-93.
Swain, D., Graves, M., R.,, Kelleran, K. and Morrison, S. (2016). Impact forces of walking and running at the same intensity. Journal of Strength and Conditioning Research.
Swain, D. P., Kelleran, K., Graves, M. S.. and Morrison, S. (2016). Impact Forces of Walking and Running at the Same Intensity. J Strength Cond Res 30 (4) , pp. 1042-9.
Newell, K. and Morrison, S. (2016). The Evolving Dynamical Landscape of Movement Forms: A Degrees of Freedom Perspective.. Kinesiology Review 5, 4-14. 5 , pp. 4-14.
Kelleran, K., Morrison, S. and Russell, D. (2016). Three-dimensional assessment of postural tremor during goal-directed aiming. Exp Brain Res.
Morrison, S., Colberg-Ochs, S. R., Parson, H., Neumann, S., Handel, R., Vinik, E., Paulson, J. and Vinik, A. (2016). Walking-Induced Fatigue leads to Increased Falls Risk in Older Adults. . Journal of the American Medical Directors Association. (in press).
Morrison, S., Rynders, C. A. and Sosnoff, J. J.. (2016). Deficits in medio-lateral balance control and the implications for falls in individuals with multiple sclerosis. Gait Posture 49 , pp. 148-54.
Morrison, S., Russell, D., Kelleran, K. and Walker, M. (2015). Bracing of the trunk and neck has a differential effect on head control during gait. J Neurophysiol 114 (3) , pp. 1773-83.
Morrison, S. and Newell, K. M.. (2015). Dimension and Complexity in Human Movement and Posture. Nonlinear Dynamics Psychol Life Sci 19 (4) , pp. 395-418.
Sosnoff, J. J.., Moon, Y., Wajda, D. A.., Finlayson, M. L.., McAuley, E., Peterson, E. W.., Morrison, S. and Motl, R. W.. (2015). Fall risk and incidence reduction in high risk individuals with multiple sclerosis: a pilot randomized control trial. Clin Rehabil 29 (10) , pp. 952-60.
Vinik, A. I.., Vinik, E. J.., Colberg-Ochs, S. R. and Morrison, S. (2015). Falls risk in older adults with type 2 diabetes. Clin Geriatr Med 31 (1) , pp. 89-99, viii.
Cole, M. H.., van den Hoorn, W., Kavanagh, J. K.., Morrison, S., Hodges, P. W.., Smeathers, J. E.. and Kerr, G. K.. (2014). Concurrent validity of accelerations measured using a tri-axial inertial measurement unit while walking on firm, compliant and uneven surfaces. PLoS One 9 (5) , pp. e98395.
Cortes, N., Onate, J. A. and Morrison, S. (2014). Differential effects of fatigue on movement variability. Gait Posture 39 (3) , pp. 888-93.
Morrison, S., Colberg-Ochs, S. R., Parson, H. K.. and Vinik, A. I.. (2014). Exercise improves gait, reaction time and postural stability in older adults with type 2 diabetes and neuropathy. J Diabetes Complications 28 (5) , pp. 715-22.
Sosnoff, J. J.., Finlayson, M., McAuley, E., Morrison, S. and Motl, R. W.. (2014). Home-based exercise program and fall-risk reduction in older adults with multiple sclerosis: phase 1 randomized controlled trial. Clin Rehabil 28 (3) , pp. 254-63.
Kavanagh, J. J.., Cross, T. J.., Newell, K. M.. and Morrison, S. (2014). Load-induced changes in older individual’s hand-finger tremor are ameliorated with targeting. J Neurol Sci 339 (1-2) , pp. 69-74.
Sosnoff, J., Motl., R. and Morrison, S. (2014). Multiple sclerosis and falls – An evolving tale. European Neurological Review 9 (1) , pp. 44-48.
Moore, C. M.., Swain, D. P., Ringleb, S. I. and Morrison, S. (2014). The effects of acute hypoxia and exercise on marksmanship. Med Sci Sports Exerc 46 (4) , pp. 795-801.
Morrison, S., Cortes, N., Newell, K. M.. and Kerr, G. (2014). The pattern of coupling dynamics between postural motion, isotonic hand movements and physiological tremor. Neurosci Lett 580 , pp. 41-6.
Thomas, K., Van Lunen, B. L. and Morrison, S. (2013). . European Journal of Applied Physiology 113 , pp. 497-508.
Morrison, S., Sosnoff, J., Hefferman, K. S., Jae, S. Y. and Fernhill, B. (2013). Aging, Hypertension and Physiological Tremor: The Contribution of the Cardioballistic Impulse to Tremorgenesis in Older Adults.. Journal of the Neurological Sciences 326 , pp. 68-74.
Sosnoff, J. J., Balantrapu, S., Pilutti, L. A., Sandroff, B. M., Morrison, S. and Motl, R. W. (2013). Cognitive Processing Speed is related to Fall Frequency in Older Adults with Multiple Sclerosis. . Archives of Physical Medicine and Rehabilitation.
Sosnoff, J. J., Finlayson, M., McAuley, E., Morrison, S. and Motl, R. W. (2013). Home-based exercise program and fall-risk reduction in older adults with multiple sclerosis: phase 1 randomized controlled trial. Clin Rehabil.
Sosnoff, J., Motl., R. and Morrison, S. (2013). Multiple sclerosis and falls – An evolving tale . US Neurology 9 (1).
Morrison, S., Sosnoff, J. J., Sandroff, B. M., Pula, J. H. and Motl, R. W. (2013). The dynamics of finger tremor in multiple sclerosis is affected by whole body position.. Journal of the Neurological Sciences 324 , pp. 84-89.
Morrison, S., Cortes, N., Newell, K. M., Silburn, P. A. and Kerr, G. K. (2013). Variability, regularity and coupling measures distinguish PD tremor from voluntary 5 Hz tremor.. Neuroscience Letters 534 , pp. 69-74.
Morrison, S., Cortes, N., Newell, K. M.., Silburn, P. A.. and Kerr, G. (2013). Variability, regularity and coupling measures distinguish PD tremor from voluntary 5Hz tremor. Neurosci Lett 534 , pp. 69-74.
Morrison, S. and Newell, K. M. (2012). Aging, Neuromuscular decline and the Change in Physiological and Behavioral Complexity of Upper-Limb Movement Dynamics. Journal of Aging Research 2012.
Morrison, S., Tucker, M. and Barrett, R. S. (2012). From Tremor to Movement: Differences in Variability and Coupling during Bilateral Finger Actions. . Motor Control 16 , pp. 31-49.
Cortes, N., Morrison, S., Onate, J. and Van Lunen, B. L. (2012). Landing Technique Affects Knee Loading and Position During Athletic Tasks. Journal of Science and Medicine in Sport 15 (2) , pp. 175-181.
Morrison, S., Colberg-Ochs, S. R., Parson, H. K. and Vinik, A. I. (2012). Relation between Risk of Falling and Postural Sway Complexity in Diabetes. Gait and Posture 35 , pp. 662-668.
Sosnoff, J. J., Socie, M. J., Sandroff, B. M., Pula, J. H., Weikert, M., Morrison, S. and Motl, R. W. (2011). Mobility, Balance and Falls in Persons with Multiple Sclerosis. PLoS ONE 6 (11).
Morrison, S., Hong, S. L. and Newell, K. M. (2011). Similarity in the Dynamics of Contralateral Motor Overflow through Increasing Frequency of Movement in a Single Limb. Experimental Brain Research 213 , pp. 403-414.
Thomas, K., Van Lunen, B. L., Colberg-Ochs, S. R. and Morrison, S. (2011). Time-dependent Changes In Spatio-temporal Gait Dynamics During Slow Walking: 2509: Board #117 June 3 8:00 AM - 9:30 AM. Medicine & Science in Sports & Exercise 43 (5) , pp. 686 10.1249/01.MSS.0000401901.61051.de.
Tucker, M., Kavanagh, J., Morrison, S. and Barrett, R. (2010). Differences in rapid initiation and termination of voluntary postural sway associated with ageing and falls-risk. Journal of Motor Behavior 42 (5) , pp. 277-287.
Keogh, J., Morrison, S. and Barrett, R. S. (2010). Strength- and coordination-training are both effective in reducing the postural tremor amplitude of older adults. Journal of Aging and Physical Activity 18 (1) , pp. 43-60.
Morrison, S. and Sosnoff, J. (2010). The Impact of Localized Fatigue on Contralateral Tremor and Muscle Activity is exacerbated by Standing Posture. Journal of Electromyography and Kinesiology 20 (6) , pp. 1211-1218.
Walker, M., Ringleb, S. I., Maihafer, G., Walker, M., Crouch, J. R., Van Lunen, B. L. and Morrison, S. (2010). Virtual reality-enhanced partial body weight-supported treadmill training poststroke: feasibility and effectiveness in 6 subjects. Arch Phys Med Rehabil 91 (1) , pp. 115-22.
Tucker, M., Kavanagh, J., Morrison, S. and Barrett, R. (2010). What are the relations between voluntary postural sway measures and falls-history status in community-dwelling older adults? . Archives of Physical Medicine and Rehabilitation 91 (5) , pp. 750-758.
Morrison, S., Colberg-Ochs, S. R., Mariano, M., Henri, P. K. and Vinik, A. I. (2010). Balance training reduces falls risk in older individuals with type 2 diabetes. Diabetes Care 33 (4) , pp. 748-750.
Walker, M., Ringleb, S. I., Maihafer, G., Walker, R., Crouch, J. R., Van Lunen, B. L. and Morrison, S. (2010). Virtual reality-enhanced partial body weight-supported treadmill training post stroke: feasibility and effectiveness in 6 subjects. Arch Phys Med Rehabil 91 , pp. 115-122.
Morrison, S. and Sosnoff, J. (2009). Age-related Changes in the Adaptability of Neuromuscular Output. Journal of Motor Behavior 41 , pp. 274-283.
Morrison, S., Hing, L. S. and Newell, K. M. (2009). Upper frequency limits of bilateral coordination Patterns.. Neuroscience Letters 454 , pp. 233-238.
Tucker, M. G.., Kavanagh, J. J.., Morrison, S. and Barrett, R. S.. (2009). Voluntary sway and rapid orthogonal transitions of voluntary sway in young adults, and low and high fall-risk older adults. Clinical Biomechanics 24 (8) , pp. 597-605.
Tucker, M., Kavanagh, J., Morrison, S. and Barrett, R. S. (2009). Voluntary sway and rapid orthogonal transitions of voluntary sway in young adults, and low and high fall-risk older adults. . Clinical Biomechanics 24 (8) , pp. 597-605.
Kavanagh, J. J.., Menz, H. B.. and Morrison, S. (2008). Accelerometry: A technique for quantifying movement patterns during walking. Gait & Posture 28 (1) , pp. 1-15.
Tucker, M., Kavanagh, J., Barrett, R. S. and Morrison, S. (2008). Age-related changes in upper body coordination and reaction time during voluntary postural sway. Human Movement Science 27 , pp. 728-737.
Morrison, S., Kerr, G. and Silburn (2008). Bilateral tremor relations in Parkinson's disease: Effects of mechanical coupling and medication. Parkinsonism and Related Disorders 14 , pp. 298-308.
Morrison, S., Kerr, G. and Silburn, P. (2008). Coupling between limb tremor and postural sway in Parkinson's disease. 23 (3) , pp. 386-394.
Morrison, S., Kerr, G., Newell, K. M. and Silburn (2008). Differential Time- and Frequency- Dependent Structure of Postural Sway and Finger tremor in Parkinson's disease. Neuroscience letters 443 , pp. 123-128.
Peterson, A., Morrison, S. and Barrett, R. S. (2008). Enhanced postural stability following driver-training in associated with positive effects on vehicle kinematics during cornering. Human Factors 50 (1) , pp. 159-172.
Barrett, R., Noordegraaf, M. V.. and Morrison, S. (2008). Gender differences in the variability of lower extremity kinematics during treadmill locomotion. J Mot Behav 40 (1) , pp. 62-70.
Barrett, R. S., Noordegraff, M. V. and Morrison, S. (2008). Gender differences in the variablility of lower extremity linematics during voluntary postural sway. Journal of Motor Behavior 40 (1) , pp. 62-70.
Mills, P. M., Morrison, S. and Barrett, R. S. (2008). Toe clearance variability during walking in young and elderly men. Gait and Posture 28 (1) , pp. 101-107.
Mills, P. M., Morrison, S. and Barrett, R. S. (2007). Agreement between foot-switch and ground reaction force techniques for identifying gait events; inter-session repeatability and the effect of walking speed. Gait and Posture 26 , pp. 323-6.
Morrison, S., Hong, L. and Newell, K. M. (2007). Inverse relations in the patterns of muscle and center of pressure dynamics during standing still and movement postures. Experimental Brain Research 181 , pp. 347-358.
Morrison, S., Mills, P. M., Barrett, R. S. and Lloyd, D. G. (2007). Repeatability of an electromagnetic tracking system protocol to obtain three-dimensional gait kinematics during treadmill locomotion. Journal of Biomechanics 40 , pp. 1504-1511.
Keogh, J., Morrison, S. and Barrett, R. S. (2007). Strength training improves the tri-digit finger pinch force control of older adults. Archives of Physical Medicine and Rehabilitation 88 , pp. 1055-1063.
Keogh, J., Morrison, S. and Barrett, R. (2006). Age-related differences in inter-digit coupling during finger pinching. European Journal of Applied Physiology 97 (1) , pp. 76-88.
Keogh, J., Morrison, S. and Barrett, r. S. (2006). Age-related differences in the coordinated of digital forces during tri-digital finger-pinching. European Journal of Applied Physiology 97 , pp. 76-88.
Morrison, S., Mills, P. M. and Barrett, R. S. (2006). Differences in mulitple segment tremor dynamics between young and elderly. Journal of Gerontology: Medical Sciences 61A , pp. 982-990.
Morrison, S., Mills, P. and Barrett, R. (2006). Differences in multiple segment tremor dynamics between the young and elderly.. Journal of Gerontology: Medical Sciences In Press.
Peterson, A., Barrett, r. S. and Morrison, S. (2006). Driver training and braking performance in vehicles with anti-lock braking systems. Safety Science 44 (10) , pp. 905-917.
Kavanagh, J. J., Morrison, S. and Barrett, R. S. (2006). Lumbar and cervical erector spinae fatigue elicits compensatory postural responses to assist in maintaining head stability during walking. Journal of Applied Physiology 101 , pp. 1118-1126.
Kavanagh, J. J., Morrison, S., James, D. A. and Barrett, R. S. (2006). Reliability of Segmental accelerations measured using a new wireless gait analysis system. Journal of Biomechanics 39 (15) , pp. 2863-2872.
Kavanagh, J. J., Barrett, R. S. and Morrison, S. (2006). The role of the neck and trunk in facilitating head stability during walking. Experimental Brain Research 172 , pp. 454-463.
Kavanagh, J., Barrett, R. and Morrison, S. (2005). Age-related differences in head and trunk coordination during walking. Human Movement Science 24 (4) , pp. 574-587.
Kavanagh, J. J., Morrison, S. and Barrett, R. S. (2005). Coordination of head and trunk accelerations during walking. European Journal of Applied Physiology 94 , pp. 468-477.
Morrison, S., Kavanagh, J., Obst, S., Irwin, J. and Haseler, L. (2005). The effects of unilateral muscle fatigue on bilateral physiological tremor. Experimental Brain Research 167 (4) , pp. 609-621.
Morrison, S., Kavanagh, J., Obst, S., Irwin, J. and Haseler, L. (2005). The effects of unilateral muscle fatigue on bilateral physiological tremor.. Experimental Brain Research 167 , pp. 609-621.
Morrison, S., Kavanagh, J. J., Obst, S. J., Irwin, J. and Haseler, L. J. (2005). The effects of unlateral muscle fatigue on bilateral physiology tremor. Experimental Brain Research 167 , pp. 609-621.
Keogh, J., Morrison, S. and Barrett, R. (2004). Augmented visual feedback increases finger tremor during postural pointing. Experimental Brain Research. 159 (4) , pp. 467-477.
Keogh, J., Morrison, S. and Barrett, R. (2004). Augumental visual feedback alters finger tremor during postural pointing. Experimental Brain Research 159 (4) , pp. 467-477.
Morrison, S., Kavanagh, J. J. and Barrett, R. (2004). Upper body accelerations during walking in healthy young and elderly men. Gait and Posture 20 (3) , pp. 291-298.
Morrison, S. and Keogh, J. (2001). Changes in the dynamics of tremor during goal-directed pointing. Human Movement Science 20 , pp. 675-693.
Morrison, S., Newell, K. M. and Challis, S. (2000). Dimensional constraints on limb movements . Human Movement Science 19 , pp. 175-201.
Morrison, S. and Newell, K. M. (2000). Limb Stiffness and postural tremor in the arm. Motor Control 4 , pp. 293-315.
Morrison, S., Newell, K. M. and Deutsch, K. M. (2000). On learning to move randomly. Journal of Motor Behavior 32 , pp. 314-320.
Morrison, S. and Newell, K. M. (2000). Postural and resting tremor in the upper limb. Clinical Neurophysiology 111 , pp. 651-663.
Morrison, S. and Newell, K. (1999). Bilateral organization of physiological tremor in the upper limb. European Journal of Applied Physiology and Occupational Physiology 80 , pp. 564-574.
Morrison, S. and Newell, K. M. (1999). Bilateral organization of physiology tremor in the upper limb. European Journal of Applied Physiology and Occupational Physiology 80 (564-574).
Morrison, S. and Anson, J. G. (1999). Natural goal-directed movements and the triphasic EMG. Motor Control 3 , pp. 346-371.
Morrison, S. and Newell, K. M. (1998). Inter-limb coupling as a function of isometric force output. Journal of Motor Behavior 10 , pp. 323-342.
Morrison, S. and Newell, K. M. (1996). Frames of reference and normal movement . Behavioral and Brain Sciences 19 , pp. 83-84.
Morrison, S. and Newell, K. (1996). Inter- and intra-limb coordination in arm tremor. Experimental Brain Research 110 , pp. 455-464.

Book Chapters

Morrison, S. and Newell, K. (2016). Aging and Slowing of the Neuromotor System Encyclopedia of Geropsychology Singapore: Springer-Verlag.

Conference Proceeding

Bowersock, C., Schussler, E., Szklo-Coxe, M., Morrison, S. and Russell, D. (2021). Measures of Gait Variability Are Not Sensitive to Aging (pp. S24-S24) JOURNAL OF SPORT & EXERCISE PSYCHOLOGY.
Yhdego, H., Li, J., Morrison, S. and Audette, M. (2019). Towards Musculoskeletal Simulation-Aware Fall Injury Mitigation: Transfer Learning with Deep CNN for Fall Detection (pp. 1-12) Tucson, AZ: Spring Simulation Conference (SpringSim).
Morrison, S. (2002). The complex nature of physiology tremor in the elderly (pp. 257-260) Official Press Book for the Society for Neuroscience.

Presentations

Samulski, B. S., Prebor, J. and Morrison, S. (October , 2019). Assessing the impact of chewing on motor function in children and adolescents Poster Annual Society for Neuroscience Meeting Chicago.
Samulski, B. S., Prebor, J. and Morrison, S. (October , 2019). Stepping couples with chewing regardless of when it is initiated suggesting hierarchical influence of chewing on gait. Poster Society for Neuroscience Annual Meeting Chicago.
Moxey, J., Grunsfeld, A., Thomas, K. and Morrison, S. (October , 2019). The relation between falls risk, slowing of movement and variability in Parkinson disease Poster Society for Neuroscience Annual Meeting Chicago, Il.
Morrison, S., Armiano, C., Kerr, G., Rynders, C. and Sosnoff, J. (June , 2019). Persons with MS exhibit declines in upper body control during walking Poster International Society for Posture and Gait Research Conference Edinburgh, Scotland.
Bowersock, C., Morrison, S. and Russell, D. (June , 2019). Instruction to perform habitual or non-habitual foot strike patterns impacts ground reaction force patterns. Oral Presentation North American Society for the Psychology of Sport and Physical Activity Annual Conference Baltimore, MD.
Russell, D., howarth, J. L. and Morrison, S. (June , 2019). Walking speed differentially affects dimensionality of movement trajectories throughout the body. Oral Presentation North American Society for the Psychology of Sport and Physical Activity Annual Conference Baltimore.
Samulski, B. S., Prebor, J., Armitano, C. and Morrison, S. (November , 2018). Chewing differentially influences upper limb motor patterns. Poster Annual Society for Neuroscience Meeting San Diego.
Armitano, C., Morrison, S. and Russell, D. (November , 2018). Individuals with an ACL reconstruction have altered neuromotor function Poster Annual Society for Neuroscience Meeting San Diego.
Morrison, S., Armitano, C., Bennett, H. and Haegele, J. A. (November , 2018). Patterns of acceleration during walking are altered in adults with autism spectrum disorder. Poster Annual Society for Neuroscience Meeting San Diego.
Reilly, N., Schussler, E., Kerr, G. and Morrison, S. (November , 2018). Tremor responses for persons with PD is exacerbated by standing posture. Poster Annual Society for Neuroscience Meeting San Diego.
Armitano, C. and Morrison, S. (May , 2018). Decline in Gait Speed Across Clinical Populations Indicates Increased Risk of Falling. Oral Presentation American College of Sports Medicine Annual Meeting Minneapolis, MN..
Pope, J., Morrison, S., Estep, A., Caswell, S. and Cortes, N. (May , 2018). A Comparison Of Two Community Based Exercise Interventions For Reducing Falls Risk In Older Adults. Poster American College of Sports Medicine Annual Meeting. Minneapolis, MN.
Kelleran, K., Morrison, S. and Russell, D. (May , 2018). Is Aiming a Handgun Like Pointing a Finger? Poster American College of Sports Medicine Annual Meeting. Minneapolis, MN.
Estep, A., Morrison, S., Caswell, S. and Cortes, N. (May , 2018). Lower Extremity Strength & Kinematic Variability in Healthy Runners During a Prolonged Run: Preliminary Analysis Poster American College of Sports Medicine Annual Meeting. Minneapolis, MN.
Samulski, B. S., Prebor, J. and Morrison, S. (November , 2017). Can you walk and chew gum at the same time? The effect of chewing gum on gait dynamics of healthy adults Poster 47th Annual Society for Neuroscience Washington DC.
Simmons, R. and Morrison, S. (November , 2017). Older adults with Type 2 Diabetes classified as fallers have slower reactions, decreased strength, and impaired postural stability compared to non-fallers. Poster 47th Annual Society for Neuroscience Washington DC.
Bowersock, C., Morrison, S. and Russell, D. (November , 2017). Quantifying the non-linear properties of center of pressure patterns during different running styles. Poster 47th Annual Society for Neuroscience Washington DC.
Armitano, C. and Morrison, S. (November , 2017). Relation between cognitive function, walking ability and strength for adults with autism spectrum disorder. Poster 47th Annual Society for Neuroscience Washington DC.
Jenkins, E. and Morrison, S. (November , 2017). The effect of painful peripheral neuropathy on gait for adults with Type 2 diabetes. Poster 47th Annual Society for Neuroscience Washington DC.
Samulski, B. S., Prebor, J. and Morrison, S. (November 5, 2017). Can you walk and chew gum at the same time? The effect of chewing gum on gait dynamics of healthy adults Poster Virginia Physical Therapy Association annual conference Newport news, VA.
McCrory, S. and Morrison, S. (June , 2017). No differences in leg strength between fallers and non-fallers. Poster American College of Sports Medicine Annual Meeting Denver, CO.
Bowersock, C. and Morrison, S. (June , 2017). Performing the Six-Minute Walk Test is linked to Increased Risk of Falling for Persons with MS. Poster American College of Sports Medicine Annual Meeting Denver, CO.
Armitano, C., Morrison, S. and Russell, D. (June , 2017). Upper body accelerations during walking are altered in individuals with ACL reconstruction. Oral Presentation American College of Sports Medicine Annual Meeting Denver, CO.
Estep, A. and Morrison, S. (June , 2017). Variability Between Healthy and Injured Individuals during Running. Poster American College of Sports Medicine Annual Meeting Denver, CO.
Simmons, R., Colberg-Ochs, S. R. and Morrison, S. (June , 2017). Wii-Based and Supervised Exercise Training Decrease Falls Risk in Older Adults with Type 2 Diabetes. Poster American College of Sports Medicine Annual Meeting Denver, CO.
Russell, D., Thomas, K. and Morrison, S. (June , 2017). Can young healthy adults walk randomly? Oral Presentation North American Society for the Psychology of Sport and Physical Activity Annual Conference San Diego, CA.
Morrison, S. (April , 2017). Loss of Neuro-Motor Variability in Aging and Disease: Implications for the Control of Balance and Gait. Lecture Invited Talk Fargo, ND.
Morrison, S. (April , 2017). To Fall on Ones Feet: Assessing and Preventing Falls in Older Adults and Clinical Populations. Lecture Invited Talk Fargo, ND.
Morrison, S., Newell, K. and Kavanagh, J. (June , 2016). Fatiguing a Single Limb leads to Bilateral Changes in Postural Tremor and Forearm Muscle Activity Other American College of Sports Medicine Annual Meeting. Boston, MA.
Armitano, C., Russell, D. and Morrison, S. (June , 2016). Local Dynamic Stability of the Knee is Maximal for Walking Overground at the Preferred Speed. Poster American College of Sports Medicine Annual Meeting. Boston, MA.
Estep, A., Morrison, S. and Cortes, N. (June , 2016). Lower extremity kinematics presents subtle variability changes from walking to running when analyzed with ApEn. Poster American College of Sports Medicine Annual Meeting. Boston, MA.
Walker, M., Morrison, S. and Colberg-Ochs, S. R. (June , 2016). Supervised Exercise leads to Improved Reactions, Balance and Reduced Falls Risk in Older Adults with Type 2 Diabetes. Poster American College of Sports Medicine Annual Meeting. Boston, MA.
Kelleran, K., Morrison, S. and Russell, D. (June , 2016). Tremor amplitude is greater in the mediolateral direction than vertical during handgun aiming tasks. Poster American College of Sports Medicine Annual Meeting. Boston, MA.
Russell, D., Haworth, J. and Morrison, S. (June , 2016). The effect of walking speed on local dynamic stability depends on the body part measured. Oral Presentation North American Society for the Psychology of Sport and Physical Activity Annual Conference Montreal, Canada.
Newell, K. M. and Morrison, S. (April , 2016). Aging and motor abilities Demonstration Society for Cognitive Aging Atlanta.
Morrison, S. (November , 2015). Linking Variability, DF's and Neuro-Motor Degradation in the Older Adult: Evidence from Balance and Falls. Oral Presentation Motor Control in Health and Disease: Brain, Muscle and Movement: Department of Kinesiology, The University of Georgia..
Morrison, S. (November , 2015). The evolving dynamical landscape for action: A degrees of freedom perspective. Keynote/Plenary Address National Academy of Kinesiology Philadelphia.
Morrison, S. (October , 2015). Deficits in medio-lateral balance control, leg strength and reaction time contribute to the increased risk of falling in persons with multiple sclerosis. Poster 45th Annual Society for Neuroscience meeting Chicago, Illinois.
Morrison, S. (June , 2015). Pregabalin positively affects subjective pain, falls risk and gait in persons with diabetic peripheral neuropathy. Poster American Diabetes Association Annual Meeting Boston MA.
Morrison, S. (May , 2015). Walking-induced fatigue leads to declines in Balance, Reaction Time, Strength and Increased Falls Risk for Persons with MS. Poster American College of Sports Medicine Annual Meeting. San Diego, California.
Morrison, S. (December , 2014). The Variable Nature of Human Movement: Assessing the impact of aging and disease on physiological complexity Posture and Gait Training to reduce Falls Risk in Varied Patient Populations. Oral Presentation Biomechanics Seminar: East Carolina University, North Carolina. .
Morrison, S. and Russell, D. m. (November , 2014). Bracing the trunk and neck alters the spatiotemporal parameters of gait. Poster 44th Annual Society for Neuroscience meeting, Washington DC.
Morrison, S. (November , 2014). The Impact of Walking-Induced Fatigue on Falls Risk and Balance in Older Adults. Poster 44th Annual Society for Neuroscience meeting, Washington DC.
Morrison, S. (September , 2014). Finding Balance: Posture and Gait Training to reduce Falls Risk in Varied Patient Populations. Lecture Psychiatry Grand Rounds: Eastern Virginia Medical School, Norfolk, Virginia.
Morrison, S. ( 2013). Is the Sky Falling? Assessing Balance and Falls in Older Adults Lecture Richmond.
Morrison, S. ( 2013). Balancing Act: Practical Assessment and Management of Falls Keynote/Plenary Address Virginia Geriatrics Society 24th Annual Conference, Richmond, Virginia.
Morrison, S. (August , 2013). Balancing Act: Practical Assessment and Management of Falls. Keynote/Plenary Address Virginia Geriatrics Society 24th Annual Conference, Richmond, VA.
Morrison, S. (April , 2013). The contribution of variability in movement performance. Lecture Noraxon's Research Symposium Los Angeles, California .
Morrison, S., Sosnoff, J. J., Sandroff, B. M., Pula, J. H. and Motl, R. W. ( 2012). The effects of postural position on physiological tremor in multiple sclerosis Poster 42nd Annual Society for Neuroscience meeting New Orleans.
Kerr, G. K. and Morrison, S. ( 2012). Changes in movement complexity are associated with increased postural instability in Parkinson’s disease Oral Presentation Australian Neuroscience Meeting Gold Coast, Australia.
Morrison, S. ( 2012). Changes in Variability with Aging and Disease: Implications for control of movement. Lecture Dunedin, New Zealand.
Morrison, S. ( 2012). Loss of Motor Function in the Older Adult: The Relation between Aging, Disease, and Physiological Complexity Lecture Dunedin, New Zealand.
Morrison, S. ( 2010). Postural Control, Falls and Falls Risk Assessment: The impact of Age, Diabetes and Parkinson’s Disease Colloquium Series Champaign-Urbana, Illinois.
Morrison, S. ( 2010). Methods to Reduce the Risk of Falling Turning the Tide on Diabetes Virginia Beach.
Kerr, G., Morrison, S., Newell, K. M. and Silburn, P. ( 2009). Changes in movement coupling and complexity in aging and neurological disease 39th Annual Society for Neuroscience meeting Chicago, Illinois.
Morrison, S., Colberg-Ochs, S. R., Parson, H. and Vinik, A. I. ( 2009). Dynamics of Balance and Falls Risk in Type 2 Diabetes 39th Annual Society for Neuroscience meeting Chicago, Illinois.
Wilcox, R., Osullivan, J., Silburn, P., Cole, M., Morrison, S. and Kerr, G. ( 2009). The electrophysiological confirmation of simple bent & locked knee manoeuvres for clinical diagnosis and management of orthostatic tremor Movement Disorders Society 13th International Congress Paris, France.
Morrison, S. and Sosnoff, J. J. ( 2008). Aging-related changes in the Adaptability of Neuomusclar Output: An Examination of Postural Tremor. American College of Sports Medicine (ACSM) Annual Meeting Indianapolis, Indiana.
Morrison, S. ( 2008). Physiological Transfer Effects after 16 Weeks of Resistance and Aerobic Training in Men 70-80yrs. American College of Sports Medicine (ACSM) Annual Meeting Indianapolis, Indiana.
Morrison, S., Tucker, M. and Kavanagh, J. ( 2007). Age-related differences in upper body coordination and dynamic reaction time during postural movements Eighth Motor Control and Human Skill Conference Fremantle, Western Austrailia, Austrailia.
Morrison, S., Hong, L. and Newell, K. M. ( 2007). Eigth Motor Control and Human Skill Conference Fremantle , Western Austrailia, Austrailia.
Morrison, S., Kerr, G. and Silburn ( 2007). Does tremor contribute to postural instability in Parkinson's disease? IBRO World Congress of Neuroscience Darwin, North Territories, Austrailia.
Morrison, S., Tucker, M., Barrett, R. S. and Kavanagh, J. ( 2006). Age-related changes in upper body coordination and reaction time during voluntary postural sway 2nd Austrailian Falls Prevention Conference Brisbane, Austrailia.
Morrison, S., Tucker, M. and Kavanagh, J. ( 2006). Age effects on postural reaction time and coordination during voluntary sway movements Gold Coast Health and Medical Research Conference Queensland, Austrailia.
Morrison, S., Kerr, G. and Silburn ( 2005). Changes in Multiple Segment Tremor Dynamics in Parkinson's diseas as a Function of Posture 35th Annual Society for Neuroscience Meeting Washignton DC..
Morrison, S., Kerr, G. and Silburn ( 2005). Tremor-Sway Interactions in Young, Elderly and Parkinson's diseas Patients 35th Annual Society for Neuroscience Meeting Washingotn, DC.
Morrison, S., Keogh, J. and Barrett, R. S. ( 2005). Strength training improves the tri-digit finger-pinch force control of older adults Australian Association for Exercise and Sports Science Conference Sydney, Australia.
Morrison, S., Kavanagh, J. J. and Barrett, R. S. ( 2005). Postural strategies adopted by the older person durgin gait initiation Australian Association of Gerontology 38th National Conference Gold Coast, Australia.
Morrison, S., Kerr, G. and Silburn ( 2005). Changes in Resting and Postural Tremor in Parkinson's disease as a Function of Postural Position XVIIIth World Congress on Neurology Sydney, Australia.
Morrison, S., Kerr, G. and Silburn ( 2005). Quantifying motor symptoms in Parkinson's disease: limb tremor and postural sway interactions XVIIIth World Congress on Neurology Sydney, Australia.
Morrison, S., Kerr, G., Roodvelt, M. and Silburn ( 2004). Bilateral tremor relations in Parkinson's disease 22nd Australian Winter Conference on Brain Research Queenstown, New Zealand.
Morrison, S., Kerr, G., Roodvelt, M. and Silburn ( 2004). Postural and limb tremor relations in Parkinson's disease 22nd Australian Winter Conference on Brain Research Queenstown, New Zealand.
Morrison, S., Kavanagh, J. J. and Barrett, R. S. ( 2004). Age-related differences in upper body control during walking Australian Falls Prevention Inaugural Conference Sydney, Australia.
Morrison, S., Kerr, G., Roodvelt, M., Wooley, D. and Silburn ( 2004). Postural adaptations to enhanced tremnor in Parkinson's disease Australian Falls Prevention Inaugural Conference Sydney, Australia.
Morrison, S., MIlls, P. M. and Barrett, R. S. ( 2003). Compensatory relationships between kinematic degrees of freedom minimiz toe clearance variability during walking XIXth International Society of Biochmechanics Congress Dunedin, New Zealand.
Morrison, S., Kavanagh, J. J. and Barrett, R. S. ( 2003). Head and Trunk acceleration in healthy young and elderly men XIXth International Society of Biochmechanics Congress Dunedin, New Zealand.
Morrison, S., Keogh, J. and Barrett, R. S. ( 2003). Inter-digit coordination and force control in finger-pinching XIXth International Society of Biochmechanics Congress Dunedin, New Zealand.
Morrison, S., Barrett, R. S. and Mills, P. ( 2003). The effect of limb support on finger tremor dynamics in healthy adults XIXth International Society of Biochmechanics Congress Dunedin, New Zealand.
Morrison, S. ( 2003). Postural sway-tremor interactions during quiet stance XVIth International Society for Postural and Gait Research: Posture and Gait through the lifespan Sydney, Australia.
  • 8th Annual Winter Conference on Brain Research in Queenstown, New Zealand,
  • Post-Graduate Scholarship, Otago University, New Zealand
  • Teaching Assistant, Pennsylvania State Unversity, Pennsylvania USA