title: Effects of distraction on the contingent negative variation in presenile dementia and normal subjects.
abstract: The authors recorded contingent negative variation (CNV) in a group of subjects affected by presenile dementia, at the onset of the symptoms, with a slight degree of intellectual deterioration. Recordings were carried out in rest basal conditions and upon administration of an insignificant distracting stimulus. Results were compared with data obtained in a group of normal subjects of the same age under the same experimental conditions. In the patients a marked decrease of the wave was observed upon the administration of a distracting stimulus.
mesh_terms: D001288:Attention / Q000502:physiology; D003265:Contingent Negative Variation; D003704:Dementia / Q000503:physiopathology* / Q000523:psychology; D004594:Electrophysiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged