Remote and proximal US preexposure and aging effects in taste aversion learning in rats.
Age as a factor in the effect of proximal and remote unconditioned stimulus (US) preexposure on conditioned taste aversion in weanling, young adult, and old rats was studied in 2 experiments. In Experiment 1, 6 daily US preconditioning exposures attenuated conditioning in weanlings and young adults, but not in old rats. In Experiment 2, exposure to a single US 1 h before the conditioning trial curtailed conditioning at all age levels. These results are explained in terms of age differences in familiarity with the conditioning context and Wagner's information-processing model for self- and retrieval-generated disruption of conditioning.
Misanin
J R
JR
Department of Psychology, Susquehanna University, Selinsgrove, PA 17870-1001, USA. Misanin@einstein.susqu.edu
Hoefel
T D
TD
Riedy
C A
CA
Hinderliter
C F
CF
D000375:Aging / Q000523:psychology*; D000818:Animals; D001245:Association Learning; D001362:Avoidance Learning; D003214:Conditioning, Classical; D005260:Female; D007274:Injections, Intraperitoneal; D018021:Lithium Chloride / Q000633:toxicity; D011939:Mental Recall; D051381:Rats; D017208:Rats, Wistar; D013649:Taste
D018021:Lithium Chloride