A lesion of primary visual cortex, V1, can result in the perceived size of objects varying with the size of their retinal image. A new study shows that the pregrasp span of the hand of an individual with such a lesion remains tuned to the object’s true size, providing evidence for separate representations mediating perceptual appearance and motor interactions.

中文翻译：

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愿景：独立专家协会的产物。

原发性视觉皮层V1病变可导致物体的感知大小随其视网膜图像大小而变化。一项新研究表明，患有此类病变的人的手的预握跨度仍可调整至对象的真实大小，从而为介导感知外观和运动相互作用的单独表示提供了证据。