Reward and aversion in a heterogeneous midbrain dopamine system.

Reward and aversion in a heterogeneous midbrain dopamine system.
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DOI:
10.1016/j.neuropharm.2013.03.019
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发表时间:
2014-01
期刊:
影响因子:
4.7
通讯作者:
Malenka RC
Malenka RC
中科院分区:
医学2区
文献类型:
--
作者:
Lammel S;Lim BK;Malenka RC

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腹侧被盖区(VTA)是一个异质性的大脑结构,在动机和奖励处理中起着核心作用。VTA多巴胺(DA)神经元功能异常及其影响的靶点与包括成瘾和抑郁在内的几种突出的神经精神疾病有关。最近的研究表明,中脑DA系统是由具有不同轴突投射的解剖学和功能异质性的DA亚群组成的。这些发现可以解释之前一些令人困惑的观察结果,这些观察结果表明DA在处理奖励和厌恶事件中都起作用。在这里,我们将重点关注在了解介导VTA中奖励和厌恶的神经回路方面的最新进展,以及压力和滥用药物(特别是可卡因)如何改变异质性中脑DA系统中的回路功能。
The ventral tegmental area (VTA) is a heterogeneous brain structure that serves a central role in motivation and reward processing. Abnormalities in the function of VTA dopamine (DA) neurons and the targets they influence are implicated in several prominent neuropsychiatric disorders including addiction and depression. Recent studies suggest that the midbrain DA system is composed of anatomically and functionally heterogeneous DA subpopulations with different axonal projections. These findings may explain a number of previously confusing observations that suggested a role for DA in processing both rewarding as well as aversive events. Here we will focus on recent advances in understanding the neural circuits mediating reward and aversion in the VTA and how stress as well as drugs of abuse, in particular cocaine, alter circuit function within a heterogeneous midbrain DA system.
神经元型特异性信号,用于腹侧对段区域的奖励和惩罚。
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