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 Concept Videos

You might also read

Related Articles

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

Sort by
Same author

ENTF Neuromodulation Yields Reduced Disability After Stroke: An Individual Participant-Level Data Meta-Analysis.

Stroke·2026
Same author

Factors Underlying Stroke Recovery Variation by Neighborhood Socioeconomic Status.

JAMA network open·2026
Same author

Advances in Stroke 2026: Recovery and Rehabilitation.

Stroke·2026
Same author

Complexity matching: adaptive strong anticipation enhances motor coordination.

Experimental brain research·2026
Same author

A composite measure of cerebral small vessel disease predicts cognitive change after stroke.

medRxiv : the preprint server for health sciences·2026
Same author

CALM-VLM: CALIBRATION AND SELECTIVE PREDICTION IN VISION-LANGUAGE MODELS FOR RELIABLE BRAIN MRI CLASSIFICATION.

bioRxiv : the preprint server for biology·2026

Related Experiment Video

Updated: Jun 15, 2025

Author Spotlight: Using Motor Imagery Brain-Computer Interface to Improve Motor and Cognitive Function in Stroke Patients
09:42

Author Spotlight: Using Motor Imagery Brain-Computer Interface to Improve Motor and Cognitive Function in Stroke Patients

Published on: September 1, 2023

1.2K

Altered brain function during movement programming is linked with motor deficits after stroke: a high temporal

Célia Delcamp1,2, Alexandre Chalard1,2, Ramesh Srinivasan3

  • 1Department of Neurology, University of California, Los Angeles, Los Angeles, CA, United States.

Frontiers in Neuroscience
|August 27, 2024
PubMed
Summary
This summary is machine-generated.

Stroke reduces Event-Related Desynchronization (ERD) in brain activity during movement, with lower ERD correlating to greater motor deficits. This finding highlights ERD as a potential biomarker for post-stroke motor function recovery.

Keywords:
biomarkercortical activityevent-related desynchronizationmotor controlpremovement

More Related Videos

Electroencephalography Network Indices as Biomarkers of Upper Limb Impairment in Chronic Stroke
06:37

Electroencephalography Network Indices as Biomarkers of Upper Limb Impairment in Chronic Stroke

Published on: July 14, 2023

840
Measuring and Manipulating Functionally Specific Neural Pathways in the Human Motor System with Transcranial Magnetic Stimulation
09:52

Measuring and Manipulating Functionally Specific Neural Pathways in the Human Motor System with Transcranial Magnetic Stimulation

Published on: February 23, 2020

9.1K

Related Experiment Videos

Last Updated: Jun 15, 2025

Author Spotlight: Using Motor Imagery Brain-Computer Interface to Improve Motor and Cognitive Function in Stroke Patients
09:42

Author Spotlight: Using Motor Imagery Brain-Computer Interface to Improve Motor and Cognitive Function in Stroke Patients

Published on: September 1, 2023

1.2K
Electroencephalography Network Indices as Biomarkers of Upper Limb Impairment in Chronic Stroke
06:37

Electroencephalography Network Indices as Biomarkers of Upper Limb Impairment in Chronic Stroke

Published on: July 14, 2023

840
Measuring and Manipulating Functionally Specific Neural Pathways in the Human Motor System with Transcranial Magnetic Stimulation
09:52

Measuring and Manipulating Functionally Specific Neural Pathways in the Human Motor System with Transcranial Magnetic Stimulation

Published on: February 23, 2020

9.1K

Area of Science:

  • Neuroscience
  • Rehabilitation Medicine

Background:

  • Stroke frequently causes motor deficits, necessitating rehabilitation targeting movement generation mechanisms.
  • Electroencephalography (EEG) and Event-Related Desynchronization (ERD) allow study of cortical activity during motor tasks.
  • ERD alterations post-stroke vary with motor deficit severity, but precise temporality requires further definition.

Purpose of the Study:

  • To precisely define the temporal changes in ERD during movement preparation and execution after stroke.
  • To investigate the correlation between ERD alterations and the severity of upper extremity motor deficits.

Main Methods:

  • 27 chronic hemiparetic stroke patients and 23 healthy controls performed a shoulder rotation task.
  • 256-electrode EEG cap recorded cortical activity, with beta-band (15-30 Hz) ERD calculated in the contralateral sensorimotor cortex.
  • Permutation tests compared ERD over time between groups; Spearman tests correlated ERD with Fugl-Meyer scores.

Main Results:

  • Stroke patients exhibited significantly lower average beta ERD amplitude than controls (-350 to 50 ms relative to movement onset; p=0.007).
  • Beta ERD amplitude negatively correlated with Fugl-Meyer scores (-200 to 400 ms relative to movement onset; r=-0.54, p=0.003).

Conclusions:

  • Reduced cortical activity amplitude, as measured by ERD, is characteristic of post-stroke motor deficits.
  • The severity of motor impairment correlates with the degree of ERD reduction during both motor programming and performance.
  • Understanding ERD's temporal dynamics offers insights into post-stroke pathophysiology and aids in developing targeted restorative therapies and biomarkers.