title: [Extraordinary variant of the alpha rhythm].
abstract: The authors describe a variant of alpha rhythm, which is remarkable because of its great amplitude (200-300 microV). It is observed quite exceptionally in children and adolescents with a severe encephalopathy of either ante- or perinatal etiology. They suggest that the surplus amplitude of this alpha rhythm could depend upon a deafferentation of the occipital cortex in patients with severe amblyopia.
mesh_terms: D061085:Agenesis of Corpus Callosum; D000513:Alpha Rhythm; D000550:Amblyopia / Q000503:physiopathology; D001927:Brain Diseases / Q000175:diagnosis*; D002540:Cerebral Cortex / Q000002:abnormalities; D002648:Child; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000503:physiopathology; D009778:Occipital Lobe / Q000503:physiopathology
vernacular_title: Une variante exceptionnelle du rythme alpha.