Appetitive Context Conditioning Proactively, but Transiently, Interferes with Expression of Counterconditioned Context Fear

Autor/inn/en	Holmes, Nathan M.; Westbrook, R. Frederick
Titel	Appetitive Context Conditioning Proactively, but Transiently, Interferes with Expression of Counterconditioned Context Fear
Quelle	In: Learning & Memory, 21 (2014) 11, S.597-605 (9 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1072-0502
DOI	10.1101/lm.035089.114
Schlagwörter	Animals; Fear; Food; Negative Reinforcement; Context Effect; Associative Learning; Association (Psychology); Inhibition; Hunger; Conditioning; Memory + Suchen Sie Ihr Suchwort? Animal; Tier; Tiere; Furcht; Lebensmittel; Negative Verstärkung; Assoziation; Hemmung; Gedächtnis
Abstract	Four experiments used rats to study appetitive-aversive transfer. Rats trained to eat a palatable food in a distinctive context and shocked in that context ate and did not freeze when tested 1 d later but froze and did not eat when tested 14 d later. These results were associatively mediated (Experiments 1 and 2), observed when rats were or were not food deprived (Experiments 1 and 2), and were not due to latent inhibition (Experiment 3). In contrast, rats trained to eat in the context and shocked there 13 d later froze and did not eat when tested 1 d after the shocked exposure. However, rats that received an additional eating session in the context 1 d before the shocked exposure ate and did not freeze when tested 1 d after the shocked exposure (Experiment 4). The results show that appetitive conditioning transiently interferes with aversive conditioning. They are discussed in terms of a weak context-shock association becoming stronger with the lapse of time (so-called fear incubation) or of the interference by the context-food association becoming weaker with the lapse of time. (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://www.learnmem.org/
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10