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Related Experiment Videos

Multiple sclerosis patients show a highly significant decrease in alpha band interhemispheric synchronization

Keith S Cover1, Hugo Vrenken, Jeroen J G Geurts

  • 1MEG Centre, VU University Medical Centre, -1 OBC, k2, Reception C, PO Box 7057, 1007 MB Amsterdam, The Netherlands. Keith@kscover.ca

Neuroimage
|October 18, 2005
PubMed
Summary

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Spheres of uncertainty: A phenomenological inquiry into healthcare practice surrounding the care for people with relapsing-remitting multiple sclerosis.

Qualitative research in medicine & healthcare·2026

Magnetoencephalography (MEG) revealed reduced brain hemisphere synchronization in multiple sclerosis (MS) patients. This finding suggests potential new biomarkers for tracking MS disease progression.

Area of Science:

  • Neuroscience
  • Medical Imaging
  • Neurology

Background:

  • Multiple Sclerosis (MS) is a chronic neurological disease affecting the central nervous system.
  • Understanding brain connectivity alterations in MS is crucial for diagnosis and management.
  • Magnetoencephalography (MEG) offers a non-invasive method to assess brain activity and connectivity.

Purpose of the Study:

  • To investigate interhemispheric functional connectivity in patients with relapsing-remitting MS (RRMS).
  • To evaluate the potential of MEG-derived synchronization measures as biomarkers for MS.

Main Methods:

  • MEG data were collected from RRMS patients and healthy controls under a resting-state, eyes-closed condition.
  • Interhemispheric Coherence Measure (IHCM) was calculated to quantify synchronization between brain hemispheres.

Related Experiment Videos

  • Analysis focused on the alpha frequency band, comparing power and coherence between groups.

    • Main Results:

    • A significant decrease in IHCM was observed in MS patients compared to controls, particularly in the alpha band.
    • No significant differences in alpha band power or its spatial distribution were found between groups.
    • The IHCM demonstrated good reproducibility in healthy controls over an extended period (>15 months).

    Conclusions:

    • Reduced interhemispheric synchronization, as measured by IHCM, is a characteristic finding in RRMS patients.
    • This alteration aligns with the known reduction in long-range brain connectivity in MS.
    • MEG-based synchronization measures show promise as potential quantitative biomarkers for MS disease load.