title: Visual evoked potentials in dementia: selective delay of flash P2 in probable Alzheimer's disease.
abstract: The flash visual evoked potential P2 component is delayed in etiologically mixed groups of demented patients compared to healthy controls or nondemented patients. This study compared patients meeting both DSM-III-R criteria for dementia and NINCDS-ADRDA criteria for probable Alzheimer's disease (AD) with healthy elderly controls and found the P2 delay in the probable AD group. Additional comparisons found no evidence of a P2 delay in demented unlikely AD patients. These results suggest that earlier findings of a delayed P2 in etiologically mixed demented groups may have been due to inclusion of AD patients.
authors.affiliation: Department of Psychiatry, Southern Illinois University School of Medicine, Springfield.
authors.forename: K L
authors.initials: KL
authors.lastname: Coburn
authors.forename: J W
authors.initials: JW
authors.lastname: Ashford
authors.forename: M A
authors.initials: MA
authors.lastname: Moreno
mesh_terms: D000368:Aged; D000544:Alzheimer Disease / Q000175:diagnosis / Q000503:physiopathology* / Q000523:psychology; D001931:Brain Mapping / Q000295:instrumentation; D002540:Cerebral Cortex / Q000503:physiopathology; D004569:Electroencephalography / Q000295:instrumentation; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010775:Photic Stimulation; D011930:Reaction Time / Q000502:physiology*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation