在V1受体场的尺度上,临界空间分离决定了运动细分的运动细分
Bikalpa Ghimire1, Rohit Bakayat1, Abhi Padala1
1Department of Neuroscience, University of Wisconsin-Madison, Wisconsin 53705, USA.
bioRxiv : the preprint server for biology
|December 22, 2025
概括
视觉系统 视觉系统
科学领域:
- 神经科学是一个神经科学.
- 视觉感知 视觉感知 视觉感知
- 计算神经科学是一种神经科学.
背景情况:
- 运动透明度,分离重叠的物体,是一个关键的视觉挑战.
- 中 (MT) 皮层以处理运动而闻名,但V1的作用仍在争论中.
- 对于运动透明度细分的空间尺度还不太清楚.
研究的目的:
- 调查V1参与运动透明度的空间规模.
- 确定V1感应场大小如何影响运动细分和集成.
- 为了澄清V1在解决视觉运动模糊性的作用.
主要方法:
- 人类心理物理实验使用3种替代性强制选择 (3AFC) 任务.
- 利用局部配对的点刺激,不同的方向和空间分离.
- 操纵点路径长度和视网膜异常度以探测空间尺度效应.
主要成果:
- 从单一到双重运动方向感知的感知转移与增加的空间分离相关.
- 细分所需的空间分离与异心率缩放,匹配V1感应场的大小.
- 当空间分离超过V1接收场的大小时,发生了方向细分;当较小时,发生了整合.
结论:
- V1感应场大小批判性地定义了运动方向细分的空间尺度.
- V1在运动透明度和一般运动细分方面发挥着重要作用.
- 结果表明V1有助于解决复杂的视觉运动场景.
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