Sydney Schaefer

Asst Professor

  • 841 Citations
  • 12 h-Index
20032020
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Research Output 2003 2020

  • 841 Citations
  • 12 h-Index
  • 40 Article
  • 2 Comment/debate
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Article
2020

Dopamine replacement improves motor learning of an upper extremity task in people with Parkinson disease

Paul, S. S., Dibble, L. E., Olivier, G. N., Walter, C., Duff, K. & Schaefer, S. Y., Jan 13 2020, In : Behavioural Brain Research. 377, 112213.

Research output: Contribution to journalArticle

Levodopa
Upper Extremity
Parkinson Disease
Dopamine
Learning
2019
2 Citations (Scopus)

Declines in motor transfer following upper extremity task-specific training in older adults

Walter, C. S., Hengge, C. R., Lindauer, B. E. & Schaefer, S., Feb 1 2019, In : Experimental Gerontology. 116, p. 14-19 6 p.

Research output: Contribution to journalArticle

Upper Extremity
Activities of Daily Living
Geriatrics
Linear regression
Regression analysis

Exploring the relationship between visuospatial function and age-related deficits in motor skill transfer

Lingo VanGilder, J., Walter, C. S., Hengge, C. R. & Schaefer, S. Y., Jan 1 2019, (Accepted/In press) In : Aging Clinical and Experimental Research.

Research output: Contribution to journalArticle

Motor Skills
Aptitude
Upper Extremity
Rehabilitation
Learning

Predicting Motor Sequence Learning in People With Parkinson Disease

Olivier, G. N., Paul, S. S., Lohse, K. R., Walter, C. S., Schaefer, S. & Dibble, L. E., Jan 1 2019, In : Journal of neurologic physical therapy : JNPT. 43, 1, p. 33-41 9 p.

Research output: Contribution to journalArticle

Parkinson Disease
Learning
Levodopa
Motor Skills
Rehabilitation

Quantifying Caregiver Movement when Measuring Infant Movement across a Full Day: A Case Report

Zhou, J., Schaefer, S. Y. & Smith, B. A., Jun 29 2019, In : Sensors (Basel, Switzerland). 19, 13

Research output: Contribution to journalArticle

Open Access
Caregivers
Leg
Noise
sensors
Wearable sensors
2018

Concussion history is negatively associated with visual-motor force complexity: evidence for persistent effects on visual-motor integration

Raikes, A. C., Schaefer, S. & Studenka, B. E., Mar 1 2018, (Accepted/In press) In : Brain Injury. p. 1-8 8 p.

Research output: Contribution to journalArticle

Unconsciousness
Fingers
History
Costs and Cost Analysis
1 Citation (Scopus)

Dopamine Replacement Medication Does Not Influence Implicit Learning of a Stepping Task in People With Parkinson’s Disease

Paul, S. S., Schaefer, S., Olivier, G. N., Walter, C. S., Lohse, K. R. & Dibble, L. E., Dec 1 2018, In : Neurorehabilitation and Neural Repair. 32, 12, p. 1031-1042 12 p.

Research output: Contribution to journalArticle

Levodopa
Parkinson Disease
Dopamine
Learning
Motor Skills
3 Citations (Scopus)

Evidence for startle as a measurable behavioral indicator of motor learning

Kirkpatrick, N. J., Ravichandran, V. J., Perreault, E. J., Schaefer, S. & Honeycutt, C., May 1 2018, In : PLoS One. 13, 5, e0195689.

Research output: Contribution to journalArticle

elbows
reflexes
Fingers
hands
learning
1 Citation (Scopus)

Visuospatial function predicts one-week motor skill retention in cognitively intact older adults

VanGilder, J. L., Hengge, C. R., Duff, K. & Schaefer, S., Jan 18 2018, In : Neuroscience Letters. 664, p. 139-143 5 p.

Research output: Contribution to journalArticle

Motor Skills
Learning
Repression (Psychology)
Visual Perception
Short-Term Memory

Within-session practice effects in the jebsen hand function test (JHFT)

Schaefer, S., Saba, A., Baird, J. F., Kolar, M. B., Duff, K. & Stewart, J. C., Nov 1 2018, In : American Journal of Occupational Therapy. 72, 6

Research output: Contribution to journalArticle

Hand
Outcome Assessment (Health Care)
Learning
2017
3 Citations (Scopus)

Associations between Fine Motor Performance in Activities of Daily Living and Cognitive Ability in a Nondemented Sample of Older Adults: Implications for Geriatric Physical Rehabilitation

Fauth, E. B., Schaefer, S., Zarit, S. H., Ernsth-Bravell, M. & Johansson, B., Oct 1 2017, In : Journal of Aging and Health. 29, 7, p. 1144-1159 16 p.

Research output: Contribution to journalArticle

Aptitude
geriatrics
cognitive ability
Activities of Daily Living
Geriatrics
2 Citations (Scopus)

Streamlining science with structured data archives: insights from stroke rehabilitation

Mohabbati-Kalejahi, N., Yazdi, M. A. A., Megahed, F. M., Schaefer, S., Boyd, L. A., Lang, C. E. & Lohse, K. R., Aug 21 2017, (Accepted/In press) In : Scientometrics. p. 1-15 15 p.

Research output: Contribution to journalArticle

data bank
stroke
Patient rehabilitation
rehabilitation
scientific discipline
2016
6 Citations (Scopus)

Asking new questions with old data: The centralized open-access rehabilitation database for stroke

Lohse, K. R., Schaefer, S., Raikes, A. C., Boyd, L. A. & Lang, C. E., Sep 20 2016, In : Frontiers in Neurology. 7, SEP, 153.

Research output: Contribution to journalArticle

Databases
Research Personnel
Randomized Controlled Trials
Stroke
Clinical Trials
9 Citations (Scopus)

Effect of Water Immersion on Dual-task Performance: Implications for Aquatic Therapy

Schaefer, S., Louder, T. J., Foster, S. & Bressel, E., 2016, In : Physiotherapy Research International. 21, 3, p. 147-154 8 p.

Research output: Contribution to journalArticle

Task Performance and Analysis
Immersion
Water
Therapeutics
Thorax
4 Citations (Scopus)

Lateralized motor control processes determine asymmetry of interlimb transfer

Sainburg, R. L., Schaefer, S. & Yadav, V., Oct 15 2016, In : Neuroscience. 334, p. 26-38 13 p.

Research output: Contribution to journalArticle

Arm
Hand
Joints

Phasic electrodermal activity during the standardized assessment of concussion (SAC)

Raikes, A. C. & Schaefer, S., Jul 1 2016, In : Journal of Athletic Training. 51, 7, p. 533-539 7 p.

Research output: Contribution to journalArticle

Arousal
Neuroimaging
Brain Concussion
Resource Allocation
Brain
9 Citations (Scopus)

Short-term practice effects in mild cognitive impairment: Evaluating different methods of change

Duff, K., Atkinson, T. J., Suhrie, K. R., Dalley, B. C. A., Schaefer, S. & Hammers, D. B., Sep 19 2016, (Accepted/In press) In : Journal of Clinical and Experimental Neuropsychology. p. 1-12 12 p.

Research output: Contribution to journalArticle

Trail Making Test
Materials Testing
Verbal Learning
Practice (Psychology)
Cognitive Dysfunction
10 Citations (Scopus)

Sleep quantity and quality during acute concussion: A pilot study

Raikes, A. C. & Schaefer, S., Dec 1 2016, In : Sleep. 39, 12, p. 2141-2147 7 p.

Research output: Contribution to journalArticle

Sleep
Wounds and Injuries
Actigraphy
Self Report
Young Adult
15 Citations (Scopus)

Testing the concurrent validity of a naturalistic upper extremity reaching task

Schaefer, S. & Hengge, C. R., Jan 1 2016, In : Experimental Brain Research. 234, 1, p. 229-240 12 p.

Research output: Contribution to journalArticle

Upper Extremity
Nonparametric Statistics
Arm
Learning
7 Citations (Scopus)

Within-session and one-week practice effects on a motor task in amnestic mild cognitive impairment

Schaefer, S. & Duff, K., Oct 2 2016, (Accepted/In press) In : Journal of Clinical and Experimental Neuropsychology. p. 1-12 12 p.

Research output: Contribution to journalArticle

Repression (Psychology)
Memory Disorders
Materials Testing
Aptitude
Neuropsychological Tests
2015
10 Citations (Scopus)

Does dopamine replacement medication affect postural sequence learning in Parkinson's disease?

Hayes, H. A., Hunsaker, N., Schaefer, S., Shultz, B., Schenkenberg, T., Boyd, L. A., White, A. T., Foreman, K. B., Dyer, P., Maletsky, R. & Dibble, L. E., Oct 1 2015, In : Motor Control. 19, 4, p. 325-340 16 p.

Research output: Contribution to journalArticle

Parkinson Disease
Dopamine
Learning
Research
12 Citations (Scopus)
Upper Extremity
Task Performance and Analysis
Hand
Cross-Sectional Studies
Cognitive Dysfunction
12 Citations (Scopus)

Preserved motor asymmetry in late adulthood: Is measuring chronological age enough?

Schaefer, S., May 1 2015, In : Neuroscience. 294, p. 51-59 9 p.

Research output: Contribution to journalArticle

Hand
Brain
Young Adult
7 Citations (Scopus)
Motor Skills
Upper Extremity
Young Adult
Learning
Brain
8 Citations (Scopus)

The design and progress of a multidomain lifestyle intervention to improve brain health in middle-aged persons to reduce later Alzheimer's disease risk: The Gray Matters randomized trial

Norton, M. C., Clark, C. J., Tschanz, J. A. T., Hartin, P., Fauth, E. B., Gast, J. A., Dorsch, T. E., Wengreen, H., Nugent, C., Robinson, W. D., Lefevre, M., McClean, S., Cleland, I., Schaefer, S. & Aguilar, S., Oct 14 2015, In : Alzheimer's and Dementia: Translational Research and Clinical Interventions. 1, 1, p. 53-62 10 p.

Research output: Contribution to journalArticle

Life Style
Alzheimer Disease
Health
Brain
Random Allocation
2 Citations (Scopus)

The use of physiological tools to identify changes in affective responses for graduate students recently admitted into a scientific discipline

Villanueva, I., Raikes, A., Ruben, N., Schaefer, S. & Gunther, J., Feb 17 2015, In : Unknown Journal. 2015-February, February, 7044316.

Research output: Contribution to journalArticle

scientific discipline
graduate
Students
Mathematics
student
2013
108 Citations (Scopus)

Assessment of upper extremity impairment, function, and activity after stroke: Foundations for clinical decision making

Lang, C. E., Bland, M. D., Bailey, R. R., Schaefer, S. & Birkenmeier, R. L., Apr 2013, In : Journal of Hand Therapy. 26, 2, p. 104-115 12 p.

Research output: Contribution to journalArticle

Upper Extremity
Stroke
Accelerometry
Paresis
Clinical Decision-Making
36 Citations (Scopus)
Paresis
Upper Extremity
Stroke
Bandages
Therapeutics
2012
23 Citations (Scopus)

Beside the point: Motor adaptation without feedback-based error correction in task-irrelevant conditions

Schaefer, S., Shelly, I. L. & Thoroughman, K. A., Feb 2012, In : Journal of Neurophysiology. 107, 4, p. 1247-1256 10 p.

Research output: Contribution to journalArticle

Nervous System
Sensory Feedback
Tablets
Learning
Direction compound
9 Citations (Scopus)

Grip type and task goal modify reach-to-grasp performance in post-stroke hemiparesis

Schaefer, S., DeJong, S. L., Cherry, K. M. & Lang, C. E., 2012, In : Motor Control. 16, 2, p. 245-264 20 p.

Research output: Contribution to journalArticle

Hand Strength
Paresis
Stroke
Fingers
Thumb
50 Citations (Scopus)

Hemispheric specialization for movement control produces dissociable differences in online corrections after stroke

Schaefer, S., Mutha, P. K., Haaland, K. Y. & Sainburg, R. L., Jun 2012, In : Cerebral Cortex. 22, 6, p. 1407-1419 13 p.

Research output: Contribution to journalArticle

Cerebral Dominance
Stroke
Research
21 Citations (Scopus)

Need for speed: Better movement quality during faster task performance after stroke

Dejong, S. L., Schaefer, S. & Lang, C. E., May 2012, In : Neurorehabilitation and Neural Repair. 26, 4, p. 362-373 12 p.

Research output: Contribution to journalArticle

Task Performance and Analysis
Hand Strength
Stroke
Fingers
Paresis
18 Citations (Scopus)

Using dual tasks to test immediate transfer of training between naturalistic movements: A proof-of-principle study

Schaefer, S. & Lang, C. E., Sep 1 2012, In : Journal of Motor Behavior. 44, 5, p. 313-327 15 p.

Research output: Contribution to journalArticle

Learning
Transfer (Psychology)
2009
52 Citations (Scopus)

Dissociation of initial trajectory and final position errors during visuomotor adaptation following unilateral stroke

Schaefer, S., Haaland, K. Y. & Sainburg, R. L., Oct 28 2009, In : Brain Research. 1298, p. 78-91 14 p.

Research output: Contribution to journalArticle

Stroke
Arm
Extremities
Direction compound
116 Citations (Scopus)

Hemispheric specialization and functional impact of ipsilesional deficits in movement coordination and accuracy

Schaefer, S., Haaland, K. Y. & Sainburg, R. L., Nov 2009, In : Neuropsychologia. 47, 13, p. 2953-2966 14 p.

Research output: Contribution to journalArticle

Cerebral Dominance
Arm
Stroke
Aptitude
Hand
31 Citations (Scopus)

Ipsilesional trajectory control is related to contralesional arm paralysis after left hemisphere damage

Haaland, K. Y., Schaefer, S., Knight, R. T., Adair, J., Magalhaes, A., Sadek, J. & Sainburg, R. L., Jun 2009, In : Experimental Brain Research. 196, 2, p. 195-204 10 p.

Research output: Contribution to journalArticle

Torque
Paresis
Paralysis
Elbow Joint
Motor Cortex
2008
6 Citations (Scopus)

Sequential processes for controlling distance in multijoint movements

Schaefer, S. & Sainburg, R. L., Jul 2008, In : Journal of Motor Behavior. 40, 4, p. 325-336 12 p.

Research output: Contribution to journalArticle

Torque
Hand
Elbow Joint
Shoulder Joint
Muscles
2007
155 Citations (Scopus)

Ipsilesional motor deficits following stroke reflect hemispheric specializations for movement control

Schaefer, S., Haaland, K. Y. & Sainburg, R. L., Aug 2007, In : Brain. 130, 8, p. 2146-2158 13 p.

Research output: Contribution to journalArticle

Cerebral Dominance
Stroke
Arm
Elbow Joint
Patient Rights
2004
89 Citations (Scopus)

Interlimb differences in control of movement extent

Sainburg, R. L. & Schaefer, S., Sep 2004, In : Journal of Neurophysiology. 92, 3, p. 1374-1383 10 p.

Research output: Contribution to journalArticle

Arm
Elbow Joint
Sensory Feedback
Fingers
Hand
2003

Interlimb differences in trajectory and positional control mechanisms

Sainburg, R. L., Schaefer, S. & Bagesteiro, L. B., 2003, In : Unknown Journal. 2, p. 1448-1451 4 p.

Research output: Contribution to journalArticle

Arm
Trajectories
Planning
Feedforward control
Extremities