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首页> 外文期刊>Neuron >Perceptual completion across the vertical meridian and the role of early visual cortex.
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Perceptual completion across the vertical meridian and the role of early visual cortex.

机译：垂直子午线上的知觉完成和早期视觉皮层的作用。

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摘要

Perceptual completion can link widely separated contour fragments and interpolate illusory contours (ICs) between them. The mechanisms underlying such long-range linking are not well understood. Here we report that completion is much poorer when ICs cross the vertical meridian than when they reside entirely within the left or right visual hemifield. This deficit reflects limitations in cross-hemispheric integration. We also show that the sensitivity to the interhemispheric divide is unique to perceptual completion: a comparable task which did not require completion showed no across-meridian impairment. We propose that these findings support the existence of specialized completion mechanisms in early visual cortical areas (V1/V2), since those areas are likely to be more sensitive to the interhemispheric divide.
机译：感知完成可以链接广泛分离的轮廓片段，并在它们之间插入虚幻轮廓（IC）。此类远程链接的机制尚不十分清楚。在这里，我们报告说，当IC穿过垂直子午线时，其完成效果要比完全位于左侧或右侧视觉半场中时差得多。这一赤字反映出跨半球整合的局限性。我们还表明，对半球间分隔的敏感性是知觉完成所独有的：一项不需要完成的可比任务没有显示出跨子午线损伤。我们建议这些发现支持早期视觉皮层区域（V1 / V2）中存在专门的完成机制，因为这些区域可能对半球间分隔更敏感。

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