皮质内记录显示视觉到行动的皮质梯度驱动人类外源性注意力
Tal Seidel Malkinson1,2, Dimitri J Bayle3, Brigitte C Kaufmann4
1Sorbonne Université, Inserm UMRS 1127, CNRS UMR 7225, Paris Brain Institute, ICM, Hôpital de la Pitié-Salpêtrière, 75013, Paris, France. tal.seidel-malkinson@univ-lorraine.fr.
Nature communications
|March 27, 2024
概括
外源的注意力,对生存至关重要,在人类皮质梯度中出现. 神经活动揭示了一个时空层次结构,视觉处理在一个端,响应时间在另一个端,挑战当前的注意力模型.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
背景情况:
- 外源注意力通过使突出刺激突出而引导视觉处理.
- 引起注意的事件如何调节大脑活动的基础的神经机制尚未完全理解.
研究的目的:
- 为了研究外源性注意力的大规模皮质出现.
- 在外源性注意力任务期间绘制神经处理的时空动态图.
主要方法:
- 分析了从28个执行外源性注意力任务的个体中1,403个接触者的皮层内电生理学数据.
- 识别与注意事件相关的神经集群和时空梯度.
主要成果:
- 外源性注意力在人类皮层的空间时空渐变梯度中逐渐出现.
- 确定了三个不同的神经集群,表现出时间尺度的层次结构.
- 神经活动反映了一端的视觉属性,另一端的响应时间,在注意事件中交叉.
结论:
- 这些发现挑战了传统的多步骤注意力模型.
- 前线对联网络似乎驱动了外源性注意力现象,例如通过处理顺序刺激来抑制回归.
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