Brain reward circuitry beyond the mesolimbic dopamine system: a neurobiological theory.

Brain reward circuitry beyond the mesolimbic dopamine system: a neurobiological theory.
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DOI:
10.1016/j.neubiorev.2010.02.001
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发表时间:
2010-11
影响因子:
8.2
通讯作者:
Ikemoto, Satoshi
Ikemoto, Satoshi
中科院分区:
医学1区
文献类型:
--
作者:
Ikemoto, Satoshi

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Reductionist attempts to dissect complex mechanisms into simpler elements are necessary, but not sufficient for understanding how biological properties like reward emerge out of neuronal activity. Recent studies on intracranial self-administration of neurochemicals (drugs) found that rats learn to self-administer various drugs into the mesolimbic dopamine structures–the posterior ventral tegmental area, medial shell nucleus accumbens and medial olfactory tubercle. In addition, studies found roles of non-dopaminergic mechanisms of the supramammillary, rostromedial tegmental and midbrain raphe nuclei in reward. To explain intracranial self-administration and related effects of various drug manipulations, I outlined a neurobiological theory claiming that there is an intrinsic central process that coordinates various selective functions (including perceptual, visceral, and reinforcement processes) into a global function of approach. Further, this coordinating process for approach arises from interactions between brain structures including those structures mentioned above and their closely linked regions: the medial prefrontal cortex, septal area, ventral pallidum, bed nucleus of stria terminalis, preoptic area, lateral hypothalamic areas, lateral habenula, periaqueductal gray, laterodorsal tegmental nucleus and parabrachical area.
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