在子子中对自然主义纹理图像的神经和行为反应
bioRxiv : the preprint server for biology
|March 11, 2024
概括
视觉区域V1和V2中的神经活动显示了微弱的纹理信息. V2神经元比V1更接近行为纹理判断,但与选择相关的活动是不稳定的,这表明纹理感知在V2之外发展.
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
- 感官处理 感官处理
背景情况:
- 纹理对于自然场景的理解至关重要.
- 早期视觉区域V1和V2处理视觉信息,V2显示出比V1.1更大的纹理选择性.
研究的目的:
- 调查 V1 和 V2 中的神经元活动与行为纹理判断之间的关系.
- 为了确定V2神经元敏感性是否比V1.1更好地预测纹理感知.
主要方法:
- 子 (macaque) 被训练来区分自然主义纹理和噪音.
- 在V1和V2的单细胞记录与行为任务同时执行.
- 刺激沿着连续从自然纹理到阶段随机化噪音的连续变化.
主要成果:
- 单个V1和V2神经元携带的纹理信息比行为报告少.
- 与V1.1相比,V2神经元敏感性更接近与行为判断相匹配.
- 在V1和V2中,与选择相关的活动在观察者和任务之间不稳定.
结论:
- 支持纹理感知的神经反应可能会在V2的下游发展.
- 早期感官皮层中与选择相关的神经活动是观察者和任务依赖的.
- 这种不稳定性表明,与选择相关的活动不是感知决策的关键因素.
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