Orbitofrontal and striatal circuits dynamically encode the shift between goal-directed and habitual actions.

Orbitofrontal and striatal circuits dynamically encode the shift between goal-directed and habitual actions.
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DOI:
10.1038/ncomms3264
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发表时间:
2013
影响因子:
16.6
通讯作者:
Costa, Rui M.
Costa, Rui M.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Gremel, Christina M.;Costa, Rui M.

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在目标导向和习惯行为之间的转换可以使决策更有效和灵活。在这里,我们展示了一种新颖的,受试者内的工具杠杆按压范式,其中小鼠在目标导向和习惯行为之间转换。我们确定了眶额皮质(OFC)在结果重估后的动作中的作用,并证实了背内侧纹状体(DMS)和外侧纹状体(DLS)介导不同的动作策略。在移动过程中OFC、DMS和DLS神经元群的体内同时记录显示,相同的神经元表现出不同的活动,这取决于按压是目标导向的还是习惯性的,DMS和OFC在目标导向的动作中变得更多,而DLS则更少。重要的是,随着结果值的变化,OFC神经活动的变化幅度与目标导向行为的水平呈正相关。OFC的化学发生抑制会破坏目标导向的作用,而OFC的光遗传激活会特异性地增加目标导向的压迫。他们还揭示了OFC在行为重估中的作用,这对理解强迫行为具有启示意义。
Shifting between goal-directed and habitual actions allows for efficient and flexible decision-making. Here we demonstrate a novel, within-subject instrumental lever-pressing paradigm where mice shift between goal-directed and habitual actions. We identify a role for orbitofrontal cortex (OFC) in actions following outcome-revaluation, and confirm that dorsal medial (DMS) and lateral striatum (DLS) mediate different action strategies. In-vivo simultaneous recordings of OFC, DMS, and DLS neuronal ensembles during shifting reveal that the same neurons display different activity depending on whether presses are goal-directed or habitual, with DMS and OFC becoming more—and DLS less-engaged during goal-directed actions. Importantly, the magnitude of neural activity changes in OFC following changes in outcome value positively correlates with the level of goal-directed behavior. Chemogenetic inhibition of OFC disruptsgoal-directed actions, while optogenetic activation of OFC specifically increases goal-directed pressing. They also reveal a role for OFC in action revaluation, which has implications for understanding compulsive behavior.
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内源性大麻素信号传导对于习惯形成至关重要。
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