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Peculiar modulation of taste aversion learning by the time of day in developing rats
Author(s) -
Manrique Tatiana,
Gámiz Fernando,
Morón Ignacio,
Ballesteros Mª Angeles,
Gallo Milagros
Publication year - 2009
Publication title -
developmental psychobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.055
H-Index - 93
eISSN - 1098-2302
pISSN - 0012-1630
DOI - 10.1002/dev.20354
Subject(s) - taste aversion , context (archaeology) , saline , latent inhibition , psychology , ontogeny , taste , period (music) , developmental psychology , endocrinology , medicine , conditioning , neuroscience , classical conditioning , biology , physics , paleontology , statistics , mathematics , acoustics
The ontogeny of the temporal context modulation of conditioned taste aversion was studied in male Wistar rats using a palatable 1% NaCl solution. A procedure that included two saline preexposures, a single pairing saline‐lithium chloride (0.15 M; 1% b.w.) either at the same or a different time of day of preexposures and a one‐bottle test at the same time than preexposure was applied. Four age groups (PN32, PN48, PN64, and PN100) covering the complete range from adolescence to the adult period were tested. The results showed no effect of a temporal context shift in PN32. A peculiar enhancement of temporal context‐specific saline aversions was exhibited by PN48 and PN64 rats, while the adult typical temporal context specificity of latent inhibition was only evident in PN100 rats. The results are discussed in terms of the peculiar brain functional organization during a protracted adolescence period. © 2008 Wiley Periodicals, Inc. Dev Psychobiol 51: 147–157, 2009