PMID: 5902395Jan 28, 1966

Weaning of young rats: effect of time on behavior



Male rats were weaned on the 15th, 16th, 17th, 25th, and 30th day of postnatal life. The rate of elaboration of the conditioned reflex at 8 months of age and the stability of the memory trace at 12 months were studied. Compared with rats weaned at 30 days of age, those weaned on day 15 elaborated the conditioned reflex much more slowly and the memory trace was less firm. Rats weaned on days 16 and 17 elaborated the conditioned reflex more quickly than rats weaned on day 15 but more slowly than those weaned on day 30. In all groups the memory trace showed the same stability and was significantly firmer than in rats weaned on day 15. The higher nervous activity of rats weaned at the age of 25 days more nearly resembles that of rats weaned at 15 days than the 30th day.


May 8, 1979·Psychopharmacology·H L RüthrichH Matthies
May 1, 1973·The American Journal of Cardiology·W K Schubert
Jan 1, 1972·Physiology & Behavior·S M Plaut, J M Davis
Sep 1, 1976·Physiology & Behavior·J M De Castro, S Balagura
May 1, 1999·Physiology & Behavior·A LorancaM Salas
Nov 16, 2006·Annals of the New York Academy of Sciences·Libor Velísek
Apr 1, 1975·Behavioral Biology·D I WilliamsM H Lee

Related Concepts

Behavior, Animal
Conditioning (Psychology)
Conditioned Reflex

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