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Coherent Neuron Activ.ty in Frontal Cortex, n. Accumbens and dorsomedial Striatum during Impulsiv. and Self-control Behav.or in Cats

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World Journal of Neuroscience 2014年第4期4卷 341-352页

作者： G. Kh. Merzhanov. E. P. Kuleshov. v. v. sidorina A. v. Zaleshin Yu. A. Gerasimov. Institute of Higher Nerv.us Activ.ty and Neurophysiology Russian Academy of Sciences Moscow Russia

Cats placed in the situation of a choosing between a high-v.lue time-delayed and a low-v.lue immediate food rewards elected to wait for the preferred reward or to obtain the worse reward quickly. On the basis of the selected behav.or strategy the cats were classified into three groups - self-control ones, choosing predominantly a delayed high-v.lue food reward, impulsiv., choosing predominantly an immediate low-v.lue food reward, and ambiv.lent - with mixed types of reactions. The correlated firing between simultaneously recorded neurons in prefrontal cortex (PFC), n. accumbens (NAcb) and dorsomedial striatum (DMStr) during choice behav.or task was studied. It was rev.aled that a total number of NAcb functional neuron interactions at cats showing self-control reactions exceeded that of observ.d at ambiv.lent and impulsiv. cats. The number of PFC and DMStr functional correlated firing at impulsiv. and ambiv.lent cats was more significant than at cats capable to self-control. Observ.d correlated firing between PFC and NAcb neurons (fronto-accumbal interactions) progressiv.ly increased with the shift of behav.or to impulsiv.ness and decreased with self-control behav.or. Our results demonstrate that performance of impulsiv. and self-control behav.or alters the correlation structure of neural firing in PFC, NAcb, DMStr and suggest the key role of local PFC, NAcb, DMStr networks in realization of choice behav.or.

关键词： Coherent neuron activ.ty Choice behav.or. Impulsiv.ness.Self-control.Neuron

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