Ontogenetic differences in the association of gustatory and tactile cues with lithium chloride and footshock.
Using a double dissociation design with 15% sucrose solution and exposure to a heat lamp (34 degrees C) as CSs and 0.3 M LiCl and 1-mA footshock as USs, the present study found 15-day-old rats to show selective associations similar to those found in adults. Five-day-old pups, however, expressed similar sucrose aversions when this solution was paired with either LiCl or footshock, whereas they expressed heat aversions after heat-LiCl but not heat-shock pairings. Results are discussed with respect to previous data on selective associations in pups, current theories on selective associations, and ontogenetic differences in stimulus selection.
Hoffmann
H
H
Department of Psychology, Knox College, Galesburg, Illinois 61401.
Hunt
P
P
Spear
N E
NE
D000367:Age Factors; D000818:Animals; D001143:Arousal / Q000187:drug effects*; D001245:Association Learning / Q000187:drug effects*; D001362:Avoidance Learning / Q000187:drug effects*; D001833:Body Temperature Regulation / Q000187:drug effects; D002712:Chlorides / Q000494:pharmacology*; D003214:Conditioning, Classical / Q000187:drug effects*; D003463:Cues; D004597:Electroshock; D007858:Learning / Q000187:drug effects*; D008094:Lithium / Q000494:pharmacology*; D018021:Lithium Chloride; D051381:Rats; D011919:Rats, Inbred Strains; D013649:Taste / Q000187:drug effects*; D013697:Thermosensing / Q000187:drug effects; D014110:Touch / Q000187:drug effects*
D002712:Chlorides; D008094:Lithium; D018021:Lithium Chloride