Sherlin, Leslie, Budzynski, Thomas, Kogan Budzynski, Helen et al. · NeuroImage · 2007 · DOI
Researchers used a special brain scanning technique called LORETA to measure electrical activity in the brains of identical twins—one with ME/CFS and one without. They found that twins with ME/CFS had different patterns of brain activity in specific regions, particularly in areas related to mood, energy management, and the nervous system's stress response. This suggests that ME/CFS may involve measurable differences in how certain parts of the brain function.
This study provides objective neurophysiological evidence that ME/CFS involves measurable brain activity differences, potentially moving beyond subjective symptom reporting. For patients, it contributes to validating ME/CFS as a condition with biological underpinnings; for researchers, it identifies specific brain regions and frequency bands worthy of further investigation in larger, prospective studies.
This study does not prove that the observed brain activity differences cause ME/CFS or that they are specific to ME/CFS—they could reflect consequences of illness, be present in other conditions, or be epiphenomenal. The small sample size and single timepoint limit generalizability, and the findings await replication before firm conclusions can be drawn. Correlation between brain activity patterns and disease status does not establish mechanism or direction of causality.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
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