Neuropsychological functioning in chronic fatigue syndrome: a review.
Michiels, V, Cluydts, R·Acta psychiatrica Scandinavica·2001
This review looked at studies examining thinking and memory problems in ME/CFS patients. Researchers found that people with ME/CFS commonly experience slower thinking speed, difficulty holding information in working memory, and trouble learning new information. The study noted that brain scans haven't shown a consistent pattern that uniquely identifies ME/CFS patients, and that fatigue severity doesn't fully explain the cognitive problems.