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Titolo:
The hippocampus and contextual memory retrieval in Pavlovian conditioning
Autore:
Maren, S; Holt, W;
Indirizzi:
Univ Michigan, Dept Psychol, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 ept Psychol, Ann Arbor, MI 48109 USA Univ Michigan, Program Neurosci, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 am Neurosci, Ann Arbor, MI 48109 USA
Titolo Testata:
BEHAVIOURAL BRAIN RESEARCH
fascicolo: 1-2, volume: 110, anno: 2000,
pagine: 97 - 108
SICI:
0166-4328(20000601)110:1-2<97:THACMR>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
FEATURE-POSITIVE DISCRIMINATIONS; ATTENUATE LATENT INHIBITION; DORSAL HIPPOCAMPUS; ENTORHINAL CORTEX; REVERSIBLE INACTIVATION; ELECTROLYTIC LESIONS; EYEBLINK RESPONSE; FEAR; RATS; STIMULUS;
Keywords:
hippocampus; context; muscimol; retrieval; fear; interference; latent inhibition; freezing;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
78
Recensione:
Indirizzi per estratti:
Indirizzo: Maren, S Univ Michigan, Dept Psychol, 525 E Univ Ave, Ann Arbor, MI 48109 USA Univ Michigan 525 E Univ Ave Ann Arbor MI USA 48109 MI 48109 USA
Citazione:
S. Maren e W. Holt, "The hippocampus and contextual memory retrieval in Pavlovian conditioning", BEH BRA RES, 110(1-2), 2000, pp. 97-108

Abstract

Several theories of hippocampal function have suggested a role for the hippocampus in contextual memory retrieval. However, these theories are based on studies using permanent pretraining lesions, which confound the role of the hippocampus in learning with its role in retrieval. We argue that an alternative methodology is required to assess the role of the hippocampus in memory retrieval processes. This alternative methodology involves temporaryinactivation of the hippocampus in Pavlovian paradigms that lend themselves to an examination of retrieval. An example of this approach is consideredin a Pavlovian fear-conditioning paradigm. We examined the influence of hippocampal inactivation on the context-specific expression of latent inhibition, a response decrement displayed when excitatory conditioning is preceded by non-reinforced presentations of a to-be-conditioned stimulus. Reversible inactivation of the dorsal hippocampus prior to retrieval testing eliminated the context-specific expression of latent inhibition. The nature of the hippocampal role in retrieval processes is discussed in the light of these data. (C) 2000 Elsevier Science B.V. All rights reserved.

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Documento generato il 19/01/20 alle ore 09:18:40