通过眼睛,价值和期望共享但可分离的神经代码
Raviv Pryluk1, Yosef Shohat1, Anna Morozov1
1Department of Neurobiology, Weizmann Institute of Science, Rehovot, Israel.
Nature
|September 24, 2020
概括
在灵长类的桃体中, 眼睛的目光和情感价值的神经代码重叠. 不同的机制处理目光结果和期望, 提供对社会焦虑的洞察力.
科学领域:
- 神经科学
- 灵长类的行为
- 社会认知
背景情况:
- 眼睛的凝视方向是灵长类动物的重要社交线索,
- 虽然眼神可以发出威胁和焦虑的信号,但它的神经与刺激值 (价值) 的重叠尚未完全理解.
- 凝视预测了社会遭遇的结果, 它们可以是积极的或消极的, 但根本的神经机制尚不清楚.
研究的目的:
- 研究灵长类动物眼睛视线处理和刺激价值之间的神经重叠.
- 识别不同的神经机制来处理视线结果与期望.
- 探索理解社会焦虑和相关疾病的含义.
主要方法:
- 子通过直接或避免的目光刺激进行了人类入侵测试.
- 厌恶和食欲的条件模式与目光刺激交织在一起.
- 在杏仁体和前带皮层进行单个神经元记录.
主要成果:
- 桃体神经元编码眼睛的视线方向, 而前带皮质神经元编码社会背景.
- 一个共享的神经群体在杏仁体中表现出对直接/回避的目光的反应,
- 确定了两个不同的神经机制:凝视/无条件刺激的整体活动和凝视/有条件刺激的相关选择性.
结论:
- 在灵长类的桃体中,
- 眼神处理结果和期望的基础是不同的神经机制.
- 研究结果提供了关于社交互动,价值计算和社交焦虑的神经基础的见解.
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