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二级运动皮层在学习非指导任务时跟踪决策价值

Elisabete Augusto¹, Vladimir Kouskoff¹, Nicolas Chenouard¹

¹Institut Interdisciplinaire de Neurosciences (IINS), University Bordeaux, CNRS, IINS, UMR 5297, 33000 Bordeaux, France; Centre Broca Nouvelle-Aquitaine, 146, rue Léo-Saignat, 33076 Bordeaux, France.

|January 7, 2025

概括

二级运动皮质 (M2) 使用决策值来指导在决定性任务的初始学习期间的选择. 抑制M2会损害性能,并改变价值更新,突出其在适应性行为中的作用.

科学领域:

神经科学是一个神经科学.
认知科学认知科学
行为科学行为科学

背景情况:

最佳的决策依赖于前脑区域,根据内部状态,经验和背景来调整选择.
二级运动皮质 (M2) 对于专家动物的适应性行为至关重要,它为复杂的任务编码决策值.
在初始学习期间,M2在决定性任务中的作用尚不清楚.

研究的目的:

调查二级运动皮层 (M2) 在自主主动的决定性任务中在初始学习期间的适应性选择中的作用.
为了确定M2神经元是否编码决策值,预测在没有暗示的环境中选择动作.
检查M2抑制对任务执行和决策值更新的影响.

主要方法:

为小鼠开发了一个自主主动的决定性前腿选择任务.
利用体内显微镜和计算建模来分析M2中神经元活动.
采用M2的光遗传抑制来评估其在行为中的因果作用.

主要成果:

任务中的自发决策遵循种族模式,揭示了潜在的决策价值.
雄性小鼠的M2神经元表现出持续的活动,编码决定值,预测行动选择概率.
对M2的光遗传抑制损害了反向学习表现和改变了决策值表示.

结论:

二级运动皮层 (M2) 使用决策值来调整初始学习过程中的选择,以确定性,无提示的任务.
M2活动编码的决策值,预测行动选择和指导适应性行为.
在M2中的决策值更新对于快速反转学习至关重要.

关键词:

科普:神经科学是什么意思慢性成像 - 慢性成像的决定价值.神经元组合是一个神经元组合.强化学习学习建模的模拟.逆向学习是一种反向学习.二级运动皮质二级运动皮质.自主发起的行动自主发起的行动

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