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Ontogenetic differences in the expression of conditioned visual aversions
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AbstractWe examined ontogenetic differences in the expression of conditioned visual aversions. Sprague‐Dawley‐derived rats, 16 or 21 days of age, were conditioned with either an element (brightness) or compound (brightness/odor) CS+ and tested for their aversion to the common element (brightness). Aversions to the brightness cue were assessed by either a traditional test of preference between the CS+ brightness and a contrasting brightness or by assessment of freezing in the presence of either brightness cue. The results indicated that strength of conditioning as well as the expression of overshadowing/potentiation was dependent on the age of the animal and on the technique used to assess conditioning. © 2003 Wiley Periodicals, Inc. Dev Psychobiol 42: 123–130, 2003
Title: Ontogenetic differences in the expression of conditioned visual aversions
Description:
AbstractWe examined ontogenetic differences in the expression of conditioned visual aversions.
Sprague‐Dawley‐derived rats, 16 or 21 days of age, were conditioned with either an element (brightness) or compound (brightness/odor) CS+ and tested for their aversion to the common element (brightness).
Aversions to the brightness cue were assessed by either a traditional test of preference between the CS+ brightness and a contrasting brightness or by assessment of freezing in the presence of either brightness cue.
The results indicated that strength of conditioning as well as the expression of overshadowing/potentiation was dependent on the age of the animal and on the technique used to assess conditioning.
© 2003 Wiley Periodicals, Inc.
Dev Psychobiol 42: 123–130, 2003.
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