外源性注意力选择的自上而下的控制是由前额叶皮层中的β相干度介导的
Agrita Dubey1, David A Markowitz1, Bijan Pesaran2
1Center for Neural Science, New York University, New York, NY 10003, USA.
Neuron
|July 27, 2023
概括
灵长类动物的注意力机制涉及到选择相关信息. 贝塔频率神经活动可以通过调节冲突期间的感官处理来支持自上而下的注意力控制.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 灵长类动物的行为
背景情况:
- 注意选择指导信息处理,区分突出的刺激和与目标相关的目标.
- 侧面前额叶皮质 (LPFC) 参与了上下注意力控制,但其精确的神经元机制仍然不清楚.
- 了解大脑如何优先考虑信息对于解释认知控制至关重要.
研究的目的:
- 研究灵长类动物外源和内源注意力选择的神经元基础.
- 在选择任务期间识别自上而下的注意力控制的神经相关物.
- 探索神经振荡,特别是β活性在调节注意力选择中的作用.
主要方法:
- 训练了两只 rhesus 子进行双目标,自由选择的光度奖励选择任务.
- 记录神经活动,包括视觉运动神经元 (VM) 和非视觉/运动神经元.
- 在注意力冲突期间分析了连贯的β活动.
主要成果:
- 视觉运动神经元 (VM) 和其他神经元群体差异地编码外源和内源选择.
- 发现一致的β活性可以选择性调节外源选择机制,特别是在冲突期间.
- 这些发现表明,注意力选择的特定网络机制涉及VM神经元.
结论:
- 这项研究揭示了VM神经元特定的网络机制,这些机制是灵长类动物注意力选择的基础.
- 连贯的β频神经动力学在调节感官通信中发挥着功能性作用,用于自上而下的注意力控制.
- 这项研究提供了关于大脑如何解决竞争性感官信息以实现目标导向行为的见解.
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