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首页> 外文期刊>The European Journal of Neuroscience >Receptive field organization of disparity-sensitive cells in Macaque medial superior temporal cortex.
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Receptive field organization of disparity-sensitive cells in Macaque medial superior temporal cortex.

机译:猕猴内侧颞上皮视差敏感细胞的感受野组织。

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摘要

Binocular disparities are crucial for building an accurate three-dimensional representation of the peripersonal environment in a viewer-centred frame of reference. Previous studies have shown that visual cells of the medial superior temporal cortex (MST) have large receptive fields and that they are sensitive to disparities present in large surfaces. By using a reverse cross-correlation technique in this study we tested 175 disparity-sensitive units recorded from MST in the awake Macaca mulatta monkey to determine if these large receptive fields are homogeneous in terms of disparity sensitivity. We found that the receptive fields of 50 cells (50 out of 175, 29%) showed subregions with specific disparity sensitivity. These subregions presented eccentricities from 0.8 to 22.3 degrees and their sizes varied from 1.6 to 15.3 degrees 2. This particular receptive field organization represents a suitable mechanism for encoding the location of small objects within our peripersonal space.
机译:双眼视差对于在以观察者为中心的参照系中建立人际环境的精确三维表示至关重要。先前的研究表明,内侧颞颞皮层(MST)的视觉细胞具有较大的感受野,并且它们对存在于大表面的视差敏感。通过在这项研究中使用反向互相关技术,我们测试了清醒的猕猴中从MST记录的175个视差敏感单位,以确定就视差敏感度而言,这些大的感受野是否均匀。我们发现50个细胞的接受域(175个细胞中的50个,占29%)显示具有特定视差敏感性的子区域。这些子区域的偏心率从0.8到22.3度,大小从1.6到15.3度不等2。这种特殊的接收场组织代表了一种合适的机制,用于编码小物体在我们周围空间中的位置。

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