Preexposure to Salty and Sour Taste Enhances Conditioned Taste Aversion to Novel Sucrose

Autor/inn/en	Flores, Veronica L.; Moran, Anan; Bernstein, Max; Katz, Donald B.
Titel	Preexposure to Salty and Sour Taste Enhances Conditioned Taste Aversion to Novel Sucrose
Quelle	In: Learning & Memory, 23 (2016) 5, S.221-228 (8 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1072-0502
DOI	10.1101/lm.040360.115
Schlagwörter	Perception; Novelty (Stimulus Dimension); Conditioning; Stimuli; Animals; Anxiety + Suchen Sie Ihr Suchwort? Wahrnehmung; Anreizsystem; Animal; Tier; Tiere; Angst
Abstract	Conditioned taste aversion (CTA) is an intensively studied single-trial learning paradigm whereby animals are trained to avoid a taste that has been paired with malaise. Many factors influence the strength of aversion learning; prominently studied among these is taste novelty--the fact that preexposure to the taste conditioned stimulus (CS) reduces its associability. The effect of exposure to tastes other than the CS has, in contrast, received little investigation. Here, we exposed rats to sodium chloride (N) and citric acid (C), either before or within a conditioning session involving novel sucrose (S). Presentation of this taste array within the conditioning session weakened the resultant S aversion, as expected. The opposite effect, however, was observed when exposure to the taste array was provided in sessions that preceded conditioning: such experience enhanced the eventual S aversion--a result that was robust to differences in CS delivery method and number of tastes presented in conditioning sessions. This "non-CS preexposure effect" scaled with the number of tastes in the exposure array (experience with more stimuli was more effective than experience with fewer) and with the amount of exposure sessions (three preexposure sessions were more effective than two). Together, our results provide evidence that exposure and experience with the realm of tastes changes an animal's future handling of even novel tastes. (As Provided).
Anmerkungen	Cold Spring Harbor Laboratory Press. 500 Sunnyside Boulevard, Woodbury, NY 11797-2924. Tel: 800-843-4388; Tel: 516-367-8800; Fax: 516-422-4097; e-mail: cshpres@cshl.edu; Web site: http://learnmem.cshlp.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01