Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Hemiplegic spasticity: neurophysiologic studies

J Somerville, P Ashby

    Archives of Physical Medicine and Rehabilitation
    |December 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Quick and simple; psoas density measurement is an independent predictor of anastomotic leak and other complications after colorectal resection.

    Techniques in coloproctology·2019
    Same author

    New Experimental Equipment Recreating Geo-Reservoir Conditions in Large, Fractured, Porous Samples to Investigate Coupled Thermal, Hydraulic and Polyaxial Stress Processes.

    Scientific reports·2018
    Same author

    The chest x-ray in congenital heart disease 7.

    Images in paediatric cardiology·2017
    Same author

    The chest x-ray in congenital heart disease 6.

    Images in paediatric cardiology·2015
    Same author

    Presumptive Q fever myocarditis associated with Coxiella burnetii infection of a homograft valve in the outflow tract of the right ventricle: review and case report.

    Cardiovascular pathology : the official journal of the Society for Cardiovascular Pathology·2015
    Same author

    Digitial endochondroma.

    Dermatology online journal·2015
    Same journal

    Sociodemographic Determinants of Food Insecurity and Its Association with BMI in Individuals with Spinal Cord Injury: A Cross-Sectional Analysis from the All of Us Research Program.

    Archives of physical medicine and rehabilitation·2026
    Same journal

    The effectiveness of perioperative respiratory muscle exercise in elderly cardiac surgery patients: a randomized controlled trial.

    Archives of physical medicine and rehabilitation·2026
    Same journal

    Correlates of Loneliness in Persons with Spinal Cord Injury.

    Archives of physical medicine and rehabilitation·2026
    Same journal

    Promoting Client-Centered Communication in Rehabilitation: Strategies for Managing Difficult Conversations.

    Archives of physical medicine and rehabilitation·2026
    Same journal

    Multi-Domain Benefits of Exergaming for Sarcopenia Management in Institutionalized Older Adults: Physical, Psychological, and Social Outcomes.

    Archives of physical medicine and rehabilitation·2026
    Same journal

    Health Literacy During Inpatient Rehabilitation and Its Association with One-Year Health and Functional Outcomes in Individuals with Traumatic Spinal Cord Injury.

    Archives of physical medicine and rehabilitation·2026
    See all related articles

    In normal subjects and hemiplegia patients, researchers studied reflex pathways using Achilles tendon vibration. Hemiplegia patients showed less late inhibition, suggesting a potential cause for exaggerated reflexes.

    Area of Science:

    • Neuroscience
    • Motor Control
    • Clinical Neurology

    Background:

    • Segmental reflex pathways are crucial for motor control.
    • Patients with hemiplegia often exhibit exaggerated reflexes.
    • Understanding reflex modulation is key to neurological rehabilitation.

    Purpose of the Study:

    • To investigate the excitability of segmental reflex pathways in normal subjects and hemiplegic patients.
    • To examine the effects of Achilles tendon vibration on the monosynaptic H reflex.
    • To identify potential differences in inhibitory mechanisms between healthy individuals and those with hemiplegia.

    Main Methods:

    • Conditioning the monosynaptic H reflex using a 200 msec vibration burst applied to the tendo Achilles.
    • Recording reflex responses in soleus motoneurons in both normal subjects and hemiplegic patients.

    Related Experiment Videos

  • Quantifying short-latency facilitation and longer-latency inhibition.

    • Main Results:

    • In normal subjects, vibration induced short-latency facilitation followed by longer-latency inhibition of soleus motoneurons.
    • Hemiplegic patients showed a similar short-latency facilitation.
    • However, hemiplegic patients exhibited significantly reduced longer-latency inhibition compared to normal subjects.

    Conclusions:

    • A diminished inhibitory mechanism in patients with hemiplegia may contribute to their exaggerated reflexes.
    • These findings highlight potential targets for therapeutic interventions in hemiplegia.
    • Modulation of reflex pathways offers insights into motor recovery after neurological injury.