Object-oriented behavior grasping from a perception/action perspective

TL;DRAbstract

Object-oriented behavior requires the fine interplay between perception and action. Two visuomotor cortical channels are typically implicated in grasping. One is described as specifically sensitive to extrinsic object parameters (e.g., location). The other is described as specifically sensitive to intrinsic object parameters (e.g., shape). According to Jeannerod (1981), the first, dorsal, channel directs the arm transport component of a grasp, while the second, ventral, channel directs the object manipulation component of a grasp. The role of both types of object information in planning a grasp is examined. Specifically, questions directed at the degree of planning by each component, their independence from one another, as well as their mode of planning (serial vs. parallel) are addressed. Two experiments employed a precueing paradigm to manipulate the type of information available prior to movement onset. Variables examined were the location of an object (left/right), its shape (spher

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