Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Hippocampal damage in rats disrupts decrements in the processing of an intramaze landmark in a spatial task
Autore:
Ramos, JMJ;
Indirizzi:
Univ Granada, Fac Psicol, Dept Psicol Expt & Fisiol Comportamiento, E-18071 Granada, Spain Univ Granada Granada Spain E-18071 omportamiento, E-18071 Granada, Spain Univ Granada, Inst Neurociencias Federico Oloriz, E-18071 Granada, Spain Univ Granada Granada Spain E-18071 derico Oloriz, E-18071 Granada, Spain
Titolo Testata:
NEUROSCIENCE LETTERS
fascicolo: 1-2, volume: 304, anno: 2001,
pagine: 89 - 92
SICI:
0304-3940(20010518)304:1-2<89:HDIRDD>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
LATENT INHIBITION; PLACE RESPONSE; LESIONS; DISSOCIATION; STIMULUS; MEMORY; FORNIX; CUES;
Keywords:
learning; spatial memory; hippocampus; place learning; navigation; attention;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Ramos, JMJ Univ Granada, Fac Psicol, Dept Psicol Expt & Fisiol Comportamiento, Campusde Cartuja, E-18071 Granada, Spain Univ Granada Campus de Cartuja Granada Spain E-18071 da, Spain
Citazione:
J.M.J. Ramos, "Hippocampal damage in rats disrupts decrements in the processing of an intramaze landmark in a spatial task", NEUROSCI L, 304(1-2), 2001, pp. 89-92

Abstract

Using a four-arm plus-shaped maze, rats with neurotoxic lesions in the dorsal hippocampus were trained in a spatial reference memory task in which both the extramaze constellation of stimuli and an intramaze landmark (a piece of sandpaper covering the floor of the goal) indicated the location of the goal arm. After reaching criterion, animals were given two transfer testsin order to investigate how much they had learned about the intra and extramaze cues. Results showed that during the intramaze transfer, based exclusively on the intramaze cue, hippocampal rats produced a performance clearlysuperior to that of the controls. Importantly, the average percentage of correct responses recorded in the hippocampal group during the extra versus the intramaze transfer test was similar. Thus, no decremental processing ofthe intramaze cue was detected in the lesioned group. In contrast, controlrats showed a decremental processing of the intramaze landmark performing worse during the intramaze transfer as compared with the extramaze transfer. These results support the view that the hippocampus regulates decrementalchanges in the processing of normally irrelevant stimuli, extending this claim into a spatial domain. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/01/20 alle ore 19:05:32