ISSN:
1432-2072
Keywords:
Roman High- and Low-Avoidance strains
;
Nicotine
;
Conditioned taste aversion
;
Psychogenetic selection
;
Rats
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract Rats of the RHA/iop and RLA/iop strains have been compared in a conditioned taste aversion procedure using nicotine (0.4 mg/kg SC) as the UCS. The procedure utilised a balanced, within-subject design for assessing discriminative aversions to drug- and saline-paired flavoured solutions. Nicotine produced clear aversions in both strains and there were no detectable differences in acquisition. During extinction, rats of the RHA/iop strain consumed more of the drug-paired flavoured solution than rats of the RLA/iop strain, and this difference became greater as the number of extinction trials proceeded. Differences in total fluid intake were too small to account for these effects that were also shown by changes in proportional intake when both flavoured solutions were presented simultaneously. Aversion was, therefore, rather weaker in RHA/iop rats than in RLA/iop rats. These results suggest that rats of the two strains do not differ in “learning ability” in a general way, and support interpretations based on differences in emotionality.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00212850
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