在围皮层中对决策的信心的人口代表性
Ariel Zylberberg1,2, Michael N Shadlen1,3,4,5
1Mortimer B Zuckerman Mind Brain Behavior Institute, Columbia University, New York, United States.
bioRxiv : the preprint server for biology
|September 4, 2024
概括
参与大脑中证据积累的神经元也表示决策信心. 这表明,相同的神经群体可以代表选择本身和对其正确性的信念.
科学领域:
- 神经科学是一个神经科学.
- 决策 决策 决策 决策
- 认知科学 认知科学
背景情况:
- 决策涉及证据的积累,竞争的神经过程竞相确定选择.
- 对决策的信心是对选择选项正确性的预反信念.
- 信任的神经基础,特别是它与证据积累的关系,仍然不完全理解.
研究的目的:
- 为了研究是否神经元积累感官证据也编码决策信心.
- 为了确定神经活动是否在收到反之前预测了选择准确性.
- 探索决定决策的信心背后的神经机制.
主要方法:
- 子执行了一个反应时间随机点运动任务.
- 高密度的神经像素探针记录了从侧侧内皮 (LIP) 区域的神经活动.
- 分析的重点是LIP神经元 (LIP神经元) 代表了对逆侧目标选择的证据.
- 使用后勤回归来解码从神经人口活动中选择的准确性.
主要成果:
- 在响应报告之前,LIP神经元的群体包含了关于选择准确性的信息.
- 尽管平均活动独立于反应时间和证据强度,但个体神经元的可变性允许准确性预测.
- 神经解码的准确性反映了人类研究中观察到的自信的行为特征.
结论:
- 参与证据积累的神经元 (LIP神经元) 也携带与决策信心相关的信号.
- 神经反应的变化,而不是平均活动,对于编码信心至关重要.
- 这些发现表明,证据积累器可以为大脑的信心判断提供信息.
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