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Titolo:
AMYGDALA-PREFRONTAL INTERACTIONS AND CONDITIONED BRADYCARDIA IN THE RABBIT
Autore:
POWELL DA; TEBBUTT D; CHACHICH M; MURPHY V; MCLAUGHLIN J; BUCHANAN SL;
Indirizzi:
JENNINGS BRYAN DORN VA MED CTR,NEUROSCI LAB 151A COLUMBIA SC 29201 UNIV S CAROLINA,DEPT PSYCHOL COLUMBIA SC 29208 UNIV S CAROLINA,SCH MED,DEPT NEUROPSYCHIAT & BEHAV SCI COLUMBIA SC 29208
Titolo Testata:
Behavioral neuroscience
fascicolo: 5, volume: 111, anno: 1997,
pagine: 1056 - 1074
SICI:
0735-7044(1997)111:5<1056:AIACBI>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHASEOLUS-VULGARIS LEUCOAGGLUTININ; CENTRAL NUCLEUS LESIONS; MEDIAL GENICULATE-BODY; IBOTENIC ACID LESIONS; SINGLE-UNIT ACTIVITY; HEART-RATE; EFFERENT PROJECTIONS; CEREBELLAR VERMIS; FRONTAL-CORTEX; ELECTROPHYSIOLOGICAL CHARACTERISTICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
86
Recensione:
Indirizzi per estratti:
Citazione:
D.A. Powell et al., "AMYGDALA-PREFRONTAL INTERACTIONS AND CONDITIONED BRADYCARDIA IN THE RABBIT", Behavioral neuroscience, 111(5), 1997, pp. 1056-1074

Abstract

Damage to the amygdala or medial prefrontal cortex (mPFC) produces deficits in learned autonomic adjustments. Whether connections between these 2 structures are necessary for acquiring classically conditioned heart rate (HR) decelerations was studied. Connections between them were interrupted by unilateral lesions of the mPFC and amygdala, but on opposite sides of the brain. One experiment focused on the mPFC and amygdala central nucleus and a second on the mPFC and amygdala basolateral complex. Bilateral lesions of either structure disrupted the HR conditioned response. The response of the 2, crossed lesioned groups alsowas smaller than that of the sham-operated and unilateral lesioned groups, but significant conditioned stimulus-evoked bradycardia occurredin both, suggesting that although interactions between the amygdala and mPFC may normally occur during associative emotional responding, these connections are not necessary for the acquisition of conditioned bradycardia.

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Documento generato il 09/07/20 alle ore 00:57:10