在行为灵长类动物中自发旅行的皮质波门感知
Zachary W Davis1, Lyle Muller2,3,4,5, Julio Martinez-Trujillo4,6,7
1The Salk Institute for Biological Studies, La Jolla, CA, USA. zdavis@salk.edu.
Nature
|October 8, 2020
概括
大脑中的自发波浪
科学领域:
- 神经科学
- 视觉皮层研究
- 大脑活动动态
背景情况:
- 感知灵敏度是动态波动的
- 在麻醉过程中已知自发皮质活动波.
- 这些波在清醒感知中的作用尚不清楚.
研究的目的:
- 在清醒的视觉皮层中研究自发移动波的存在和作用.
- 确定这些波是否会影响清醒状态中的神经和感知灵敏度.
主要方法:
- 开发了用于分析噪音多电极数据的新分析技术.
- 在醒着的海的外层视觉皮层中发现了自发的波浪.
- 在视觉任务中与目标检测性能相关的波动.
主要成果:
- 在醒着的海豚视觉皮层中发现了自发的波浪.
- 波的时间和位置预测了目标唤起的活动大小.
- 波特征预测了探测微弱视觉目标的可能性.
- 没有组织的神经活动波动的预测效果较低.
结论:
- 在清醒期间,自发移动波在感官处理中起着重要作用.
- 这些波调节神经和感知灵敏度.
- 这一发现为理解大脑动态和感知开辟了新的途径.
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