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在眼道之间进行注意采样

Daniele Re¹, Golan Karvat¹, Ayelet N Landau¹

¹Hebrew University of Jerusalem, Israel.

Journal of cognitive neuroscience

|June 14, 2023

概括

注意采样,对于视觉感知至关重要,发生在节奏上. 眼睛之间的无意识选择表明,这种采样过程,即使是无意识的,在有意识意识之前,在视觉处理的早期发生.

科学领域:

认知神经科学认知神经科学
视觉感知视觉感知视觉感知
神经科学是一个神经科学.

背景情况:

视觉注意力以时间波动运行,在集中注意力时显示8 Hz的振荡,当注意力被分割时显示每对象4 Hz的振荡.
注意采样的神经阶段和意识依赖性仍然不清楚.

研究的目的:

为了调查注意力抽样是否发生在早期的视觉处理阶段.
为了确定无意识的选择过程是否会影响节奏性注意力抽样.

主要方法:

参与者观看了一个以双眼或单眼呈现的中心物体.
向一只眼睛 (单眼状况) 呈现的线索被假设为偏差选择.
对时间波动 (频率分析) 分析了目标检测性能.

主要成果:

目标检测显示双眼条件的8 Hz波动.
在单眼条件下,当右眼被提示时,目标检测波动在4赫兹,尽管参与者不知道眼睛特定的提示.
这些结果表明,即使在无意识的选择中,也会有节奏采样.

结论:

注意采样是由早期单眼通道之间的竞争驱动的,先于有意识的意识.
这个过程发生在初级视觉皮层中视觉信息融合之前.
无意识的选择表明,注意力抽样不依赖于有意识的意识.

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