Jeannerod M
Vision et Motricité, Institut national de la santé et de la recherche médicale U94, Bron, France.
Can J Physiol Pharmacol. 1994 May;72(5):535-41. doi: 10.1139/y94-077.
The hypothesis of several subsystems for processing visual information is expanded to the context of visuomotor functions. It is proposed that object-oriented actions involve three main types of processing whether the object is to be localized, identified, or grasped and manipulated. Neurological evidence from patients is provided, showing that each type of processing pertains to a distinct pathway. Whereas identification is impaired by lesions affecting the occipitotemporal pathway, localization and grasping are processed in posterior parietal cortex. A new clinical case with a parietal lesion is presented, where the grasping deficit contrasted with preservation of both identification and localization. This result suggests separate representations for localizing and grasping within parietal cortex.
用于处理视觉信息的多个子系统的假说被扩展到视觉运动功能的背景中。有人提出，面向对象的动作涉及三种主要类型的处理，无论该对象是要定位、识别，还是抓取和操作。文中提供了来自患者的神经学证据，表明每种处理类型都与一条不同的通路相关。虽然识别功能会因影响枕颞通路的损伤而受损，但定位和抓握功能则在后顶叶皮层进行处理。本文介绍了一个患有顶叶病变的新临床病例，其中抓握功能缺陷与识别和定位功能的保留形成对比。这一结果表明，顶叶皮层内存在用于定位和抓握的不同表征。
