A5061375488- Muscle activation and electromyography studies
- Motor Control and Adaptation
- Balance, Gait, and Falls Prevention
- Cerebral Palsy and Movement Disorders
- EEG and Brain-Computer Interfaces
- Spinal Cord Injury Research
- Action Observation and Synchronization
- Sports Performance and Training
- Lower Extremity Biomechanics and Pathologies
- Migraine and Headache Studies
- Stroke Rehabilitation and Recovery
- Nerve Injury and Rehabilitation
- Botulinum Toxin and Related Neurological Disorders
- Visual perception and processing mechanisms
- Diabetic Foot Ulcer Assessment and Management
- Gait Recognition and Analysis
- Transcranial Magnetic Stimulation Studies
- Robot Manipulation and Learning
- Biotin and Related Studies
- Hemispheric Asymmetry in Neuroscience
- Tactile and Sensory Interactions
Northwestern University
2021-2024
John Wiley & Sons (United States)
2024
Hudson Institute
2024
Shirley Ryan AbilityLab
2021-2023
University of Cincinnati
2018-2022
Edward Hines, Jr. VA Hospital
2021-2022
Paired corticospinal-motoneuronal stimulation (PCMS) has been used to enhance corticospinal excitability and functional outcomes in humans with spinal cord injury (SCI). Here, we demonstrate that 360 paired pulses resulted larger increases motor-evoked potential size a hand muscle better ability complete the nine-hold-peg-test compared 180 people SCI. This proof-of-principle study suggests increasing PCMS dose represents strategy boost motor output after
Objective A motor complete spinal cord injury (SCI) results in the loss of voluntary control below point injury. Some these patients can regain partial function through inpatient rehabilitation; however, there is currently no biomarker to easily identify which have this potential. Evidence indicates that spasticity could be marker. Patients with SCI who exhibit show preservation descending pathways, pathways necessary for signals carried from brain target muscle. We hypothesized presence...
People use the mechanical interplay between stability and manoeuvrability to successfully walk. During single-limb support, body states (position velocity) that increase in lateral will inherently resist manoeuvres, decrease medial facilitate manoeuvres. Although not well understood, people can make behavioural decisions exploiting this relationship anticipation of perturbations or direction changes. To characterize component stability-manoeuvrability relationship, 24 participants performed...
A feasibility study was conducted to investigate the use of a wearable gait analysis system for classifying speed using low-cost camera in semi-structured indoor setting. Data were collected from 19 participants who wore during walk sequences at varying self-determined speeds (slow, medium, and fast). Gait parameters this compared with obtained vest comprising single triaxial accelerometer marker-based optical motion-capture system. Computer-vision techniques signal processing methods used...
Recent evidence suggests that visual feedback influences the adjustment of grip force to changing load exerted by a grasped object as it is manipulated. The current project investigated how kinematics affects coupling scaling apparent displacements viewed in virtual reality. Participants moved manually track moving target. predictability was also manipulated altering nature target trajectories (and therefore motions). When increased magnitude, became more tightly coupled over time....
Previous work suggests that synergistic activity among motor elements implicated in force production tasks underlies enhanced performance stability associated with visual feedback. A hallmark of is reciprocal compensation, is, covariation the states stabilizes critical variables. The present study examined if characteristics compensation are indicators individuals’ capacity to respond adaptively variations resolution feedback about criterion performance. Twenty healthy adults (19.25 ± 1.25...
The impact of environmental uncertainty on locomotor adaptation remains unclear. Environmental could either aid by prompting protective control strategies that stabilize movements to assist learning or impede reducing error sensitivity and fostering hesitance pursue corrective movements. To explore this, we investigated participants’ a consistent force field after experiencing in the form unpredictable balance perturbations. We compared performance this group (Perturbation) adaptive did not...
The grip force applied to maintain grasp of a handheld object has been typically reported as tightly coupled the load exerted by it is actively manipulated, occurring proportionally and consistently in phase with changes force. However, continuous force-load coupling breaks down when overall levels oscillation amplitudes are lower (Grover F, Lamb M, Bonnette S, Silva PL, Lorenz T, Riley MA. Exp Brain Res 236: 2531–2544, 2018) or more predictable FM, Nalepka P, 237: 687–703, 2019). Under...
Abstract People use the mechanical interplay between stability and manoeuvrability to successfully walk. During single limb support, body states (position velocity) that increase lateral will inherently resist manoeuvres, decrease medial stability, facilitate manoeuvres. Although not well understood, people can make behavioural decisions exploiting this relationship in anticipation of perturbations or direction changes. To characterize component stability-manoeuvrability relationship,...
Feedforward internal model-based control enabled by efference copies of motor commands is the prevailing theoretical account anticipation. Grip force during object manipulation-a paradigmatic example anticipation-is a key line evidence for that account. However, model approach has not addressed computational challenges faced act manipulating mechanically complex objects with nonlinear, underactuated degrees freedom. These exhibit and unpredictable load dynamics which cannot be encoded...
The uncontrolled manifold (UCM) approach quantifies the presence of compensatory variability between musculoskeletal elements involved in a motor task. This has proved useful for identifying synergistic control strategies variety everyday tasks and investigating how are affected by pathology. However, UCM is limited its ability to relate variance directly task performance because along mathematically agnostic performance. We present new analysis that patterns irregularity over time. In...
Abstract The impact of environmental uncertainty on locomotor adaptation remains unclear. Environmental could either aid by prompting protective control strategies that stabilize movements to assist learning or impede reducing error sensitivity and fostering hesitance pursue corrective movements. To explore this, we investigated participants’ a consistent viscous force field after experiencing in the form unpredictable balance perturbations. We compared performance this group (Perturbation)...