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Titolo:
Dissociable roles of the central and basolateral amygdala in appetitive emotional learning
Autore:
Parkinson, JA; Robbins, TW; Everitt, BJ;
Indirizzi:
Univ Cambridge, Dept Expt Psychol, Cambridge CB2 3EB, England Univ Cambridge Cambridge England CB2 3EB hol, Cambridge CB2 3EB, England
Titolo Testata:
EUROPEAN JOURNAL OF NEUROSCIENCE
fascicolo: 1, volume: 12, anno: 2000,
pagine: 405 - 413
SICI:
0953-816X(200001)12:1<405:DROTCA>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
CONDITIONED PLACE PREFERENCE; EXCITOTOXIC LESIONS; CENTRAL NUCLEUS; HIPPOCAMPAL-LESIONS; FEAR; REWARD; REINFORCEMENT; AMPHETAMINE; BEHAVIOR; CORTEX;
Keywords:
autoshaping; excitotoxic lesion; Pavlovian conditioning; rat; subiculum;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
47
Recensione:
Indirizzi per estratti:
Indirizzo: Everitt, BJ Univ Cambridge, Dept Expt Psychol, Downing St, Cambridge CB2 3EB, England Univ Cambridge Downing St Cambridge England CB2 3EB , England
Citazione:
J.A. Parkinson et al., "Dissociable roles of the central and basolateral amygdala in appetitive emotional learning", EUR J NEURO, 12(1), 2000, pp. 405-413

Abstract

The amygdala is considered to be a core component of the brain's fear system. Data from neuroimaging studies of normal volunteers and brain-damaged patients perceiving emotional facial expressions, and studies of conditionedfreezing in rats, all suggest a specific role for the amygdala in aversivemotivation. However, the amygdala may also be critical for emotional processing in positive or appetitive settings. Using an appetitive Pavlovian approach procedure we show a theoretically important dissociation in the effects of excitotoxic lesions of the central nucleus and basolateral area of the amygdala, in the rat, Whilst central nucleus lesions impair appetitive Pavlovian conditioning, basolateral lesions do not, Together with other data,these results not only support the hypothesis that the amygdala is critical for appetitive as well as aversive learning, but are also consistent withamygdala subsystems subserving distinct aspects of emotional learning. Lesions of the dorsal or ventral subiculum were without effect on autoshaping,indicating the lack of involvement of hippocampal processing in this form of emotional behaviour and emphasizing further the neural specificity of the effects seen following central amygdala lesions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 21/10/20 alle ore 11:01:37