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首页> 外文期刊>The European Journal of Neuroscience >Functional segregation of plural regions representing cardinal contours in cat primary visual cortex.
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Functional segregation of plural regions representing cardinal contours in cat primary visual cortex.

机译：在猫原发性视觉皮层中代表基本轮廓的多个区域的功能分离。

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Abstract Our previous data based on an imaging study suggested that, in cat area 17, the representations of cardinal orientations overlap less than the representation of their nearby angles. The purpose of this study was to further investigate the underlying single-cell properties. Optical imaging was performed first to map the cortical regions corresponding to the four principal contours, the two cardinals and the two obliques. The cortical region activated by a principal orientation but not by the +10 degrees or -10 degrees neighbouring angles, namely the area with optically relative independent orientation selectivity (RIOS), was mapped together with the regions that overlapped with the +10 degrees and/or -10 degrees neighbouring angles (non-RIOS). Electrode penetrations were targeted to the RIOS and non-RIOS regions in each of the four orientations. A comparison between the RIOS and the non-RIOS regions documented a significantly higher percentage of cells with the orientation preference of the cardinal orientations in the cardinal RIOS region than that seen in the other regions. Additionally, the difference in the tuning width of cells between the RIOS and non-RIOS in the cardinal region was significantly larger than the difference between the RIOS and non-RIOS in the oblique region. The cells in the cardinal RIOS region were tuned more sharply and the cells in cardinal non-RIOS region more broadly than the oblique RIOS and/or the non-RIOS region, which showed no significant difference. These data strongly suggest the existence of functional segregation in the region corresponding to the cardinal contours.
机译：摘要我们先前基于影像学研究的数据表明，在猫区17中，基本方向的表示重叠的程度小于其附近角度的表示。本研究的目的是进一步研究潜在的单细胞特性。首先进行光学成像，以绘制对应于四个主要轮廓，两个主角和两个斜角的皮层区域。将主要方向而不是+10度或-10度相邻角激活的皮质区域（即具有光学相对独立方向选择性（RIOS）的区域）与与+10度和/或-10度的邻角（非RIOS）。在四个方向中的每个方向上，电极穿透均针对RIOS和非RIOS区域。 RIOS和非RIOS区域之间的比较表明，在主要RIOS区域中，具有基本方向取向优先的细胞百分比显着高于其他区域。另外，基本区域中的RIOS和非RIOS之间的细胞调谐宽度的差异明显大于倾斜区域中的RIOS和非RIOS之间的细胞差异。与倾斜的RIOS和/或非RIOS区域相比，主要RIOS区域中的细胞调整得更加尖锐，而主要的非RIOS区域中的细胞更宽，这没有显着差异。这些数据强烈表明在与主要轮廓相对应的区域中存在功能隔离。

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