title: Multiphasic retention deficits at periodic intervals after passive-avoidance learning.
abstract: Aftetr one-trial passive-avoidance training, indepelenet groups of rats tested promptly after training or at successive 6-hour intervals displayed a repetitive pattern of high then low retention scores. These results suggest that some physiological rhythm may interact with retention performance.
mesh_terms: D000818:Animals; D001362:Avoidance Learning; D004597:Electroshock; D004924:Escape Reaction; D008297:Male; D008568:Memory; D051381:Rats; D011930:Reaction Time; D013997:Time Factors