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Effects of Dry Needling on Spinal Reflexes: The Hoffman-reflex
Spasticity can lead to changes in spinal and supraspinal pathways which can lead to decreased function and quality of life in persons with stroke. Physical therapists worldwide have been administering trigger point deep dry needling (DDN) to treat post-stroke spasticity. Yet, currently, effects of DDN on spinal somatosensory processing are not well understood. To understand the neurophysiological mechanisms of DDN, we are currently investigating the effects of DDN on spinal somatosensory pathways in persons with and without stroke.
Source: Archives of Physical Medicine and Rehabilitation - September 28, 2021 Category: Rehabilitation Authors: Gretchen Seif, Alan Phipps, Anna Zuloaga, Rachel McLaughlin, Blair Dellenbach, Aiko Thompson Tags: Research Poster 1709913 Source Type: research

Operant Condition of the Flexor Carpi Radialis H-reflex
Operant conditioning of the largely monosynaptic H-reflex is a targeted and non-invasive therapeutic intervention for people with motor dysfunction after spinal cord injury and possibly stroke.1,2,3 It can complement other therapies and has no known adverse side effects. To date, H-reflex operant conditioning has focused on the leg. Here, we extend it to the arm by asking participants to either increase or decrease the flexor carpi radialis (FCR) H-reflex. In addition, we examine concurrent changes in brain activity by recording electroencephalographic activity (EEG).
Source: Archives of Physical Medicine and Rehabilitation - November 20, 2020 Category: Rehabilitation Authors: James Norton, Theresa Vaughan, Darren Gemoets, Susan Heckman, Stavrina Devetzoglou-Toliou, Jonathan Carp, Jonathan Wolpaw Tags: Late Breaking Research Poster Source Type: research

Asymmetry of Reflex Thresholds Between Contralateral Limbs in Hemispheric Stroke Survivors and Dominant Limbs in Neurologically Intact Individuals
To investigate the difference in stretch reflex thresholds between the contralateral limb in hemispheric stroke survivors and the dominant limb of neurologically intact individuals. We hypothesize that after hemispheric stroke, alterations in the excitability of the reticulospinal tract affects neurons on both sides of the spinal cord, and thereby contributes to hyperexcitability of reflex pathways on both sides of stroke survivors (as compared to neurologically intact subjects).
Source: Archives of Physical Medicine and Rehabilitation - October 24, 2020 Category: Rehabilitation Authors: Taimoor Afzal, Matthieu Chardon, William Rymer, Nina Suresh Tags: Oral Research Presentation Source Type: research

Sympathetic Nervous System Activity as an Assessment of Perceived Challenge of Walking After Stroke
To investigate measurement of sympathetic nervous system (SNS) activity as a physiological probe of the perceived challenge of walking.
Source: Archives of Physical Medicine and Rehabilitation - September 24, 2017 Category: Rehabilitation Authors: David Clark, Sudeshna Chatterjee, Eric Porges, Emily Fox, Chitralakshmi Balasubramanian Source Type: research

Ischemic Preconditioning as a Method to Improve Motor Function Post Stroke
To investigate the acute effects of ischemic preconditioning (IPC) on leg strength and reflex responses post stroke. We hypothesized that a single session of IPC on the test leg would increase maximal knee extensor strength and reflex responses in individuals with chronic stroke.
Source: Archives of Physical Medicine and Rehabilitation - September 27, 2016 Category: Rehabilitation Authors: Allison Hyngstrom, Brian D. Schmit, David D. Gutterman, Matthew J. Durand Source Type: research

Determining Levels of Upper Extremity Movement Impairment by Applying a Cluster Analysis to the Fugl-Meyer Assessment of the Upper Extremity in Chronic Stroke
To quantitatively determine levels of upper extremity movement impairment by using a cluster analysis of the Fugl-Meyer Assessment of the Upper Extremity (FMA-UE) with and without reflex items.
Source: Archives of Physical Medicine and Rehabilitation - August 8, 2016 Category: Rehabilitation Authors: Elizabeth J. Woytowicz, Jeremy C. Rietschel, Ronald N. Goodman, Susan S. Conroy, John D. Sorkin, Jill Whitall, Sandy McCombe Waller Tags: Original research Source Type: research

Determining Levels of Upper Extremity Movement Impairment by Applying Cluster Analysis to Upper Extremity Fugl-Meyer Assessment in Chronic Stroke
To quantitatively define levels of upper extremity movement impairment using cluster analysis of Fugl-Meyer upper extremity (FM-UE) with and without reflex items.
Source: Archives of Physical Medicine and Rehabilitation - August 8, 2016 Category: Rehabilitation Authors: Elizabeth J. Woytowicz, Jeremy C. Rietschel, Ronald N. Goodman, Susan S. Conroy, John D. Sorkin, Jill Whitall, Sandy McCombe Waller Source Type: research

Increased lower limb spasticity but not strength or function following a single-dose serotonin reuptake inhibitor in chronic stroke
To investigate the effects of single doses of a selective serotonin reuptake inhibitor (SSRI) on lower limb voluntary and reflex function in individuals with chronic stroke.
Source: Archives of Physical Medicine and Rehabilitation - September 13, 2015 Category: Rehabilitation Authors: Krishnaj Gourab, Brian D. Schmit, T. George Hornby Source Type: research

Position-Dependent, Hyperexcitable Patellar Reflex Dynamics in Chronic Stroke
Abstract: Objectives: To quantify tendon tap response (TTR) properties and their position dependence using multiple neuromechanical parameters, and to analyze correlations among neuromechanical and clinical measures.Design: Hyperexcitable dynamics of TTR were investigated in a case-control manner. An instrumented hammer was used to induce the patellar deep tendon reflex (DTR), with reflex-mediated electromyography and torque responses measured across a range of knee flexion.Setting: Research laboratory in a rehabilitation hospital.Participants: Chronic hemiplegic stroke survivors (n=9) and healthy subjects (n=13).Intervent...
Source: Archives of Physical Medicine and Rehabilitation - October 12, 2012 Category: Rehabilitation Authors: Chung-Yong Yang, Xin Guo, Yupeng Ren, Sang Hoon Kang, Li-Qun Zhang Tags: Original Articles Source Type: research