title: Flash P2 delay in primary degenerative dementia of the Alzheimer type.
abstract: 1. Flash visual evoked responses of 31 patients meeting DSM-III-R criteria for primary degenerative dementia of the Alzheimer type were compared with 31 healthy controls. 2. P1 latency was normal (75 +/- 6 msec Alzheimer's; 75 +/- 6 msec controls). 3. P2 was significantly delayed (162 +/- 32 msec, 147 +/- 20 msec, p < 0.03) among patients. 4. P1-P2 interpeak latency was significantly increased (87 +/- 32 msec, 71 +/- 21 msec, p < 0.03) among patients.
authors.affiliation: Mercer University School of Medicine, Macon, Georgia, USA.
authors.forename: N C
authors.initials: NC
authors.lastname: Moore
authors.forename: K A
authors.initials: KA
authors.lastname: Tucker
authors.forename: M W
authors.initials: MW
authors.lastname: Jann
authors.forename: R M
authors.initials: RM
authors.lastname: Hostetler
authors.forename: K L
authors.initials: KL
authors.lastname: Coburn
mesh_terms: D000368:Aged; D000544:Alzheimer Disease / Q000175:diagnosis* / Q000503:physiopathology; D001931:Brain Mapping; D004569:Electroencephalography; D005074:Evoked Potentials, Visual / Q000502:physiology*; D006801:Humans; D010775:Photic Stimulation; D014793:Visual Cortex / Q000503:physiopathology