在 V1 和 V2 中与自然主义纹理的适应
Aida Davila1, Adam Kohn2,3,4
1Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461.
概括
适应自然纹理减少了视觉皮层 (V1和V2) 中的神经反应. 适应的特异性在特征调整首先出现的地方出现,但整体信息编码减少.
科学领域:
- 神经科学是一个神经科学.
- 视觉处理 视觉处理
- 感官适应 感官适应
背景情况:
- 神经元适应影响整个层次结构的视觉处理.
- 对于一个视觉区域的适应如何影响其他视觉区域的理解有限.
研究的目的:
- 为了研究适应自然主义纹理如何影响的初级视觉皮层 (V1) 和V2.2区域的神经元响应和选择性.
- 用纹理和噪音刺激来确定V1和V2中的适应特异性.
主要方法:
- 给子展示了自然主义的纹理,以诱导适应.
- 在V1和V2中记录了神经元反应和选择性.
- 刺激包括纹理和光谱匹配的噪音来测试适应特异性.
主要成果:
- 在V1和V2中,适应降低了神经元的响应能力.
- V2的适应特异性取决于更高阶的纹理统计数据,与V1.1不同.
- 由单个神经元和群体编码的纹理信息在适应后的两个区域都下降了.
结论:
- 适应效应是在最早的处理阶段诱导的,当一个特征被调整时.
- 对刺激的特定适应并不一定会增强感官编码.
- 了解跨区域适应对于视觉处理至关重要.
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