Priming of Reach and Grasp Actions by Handled Objects
Priming of Reach and Grasp Actions by Handled Objects
复制标题
DOI：
10.1037/a0023509
复制
发表时间：
2011-10-01
影响因子：
2.1
通讯作者：
Breuer, Andreas T.
中科院分区：
文献类型：
--
作者：
Masson, Michael E. J.;Bub, Daniel N.;Breuer, Andreas T.
如啤酒杯或煎锅等被处理的物体的图片显示，以最快的速度伸展和把握与该物体兼容的动作。为了确定这一结果所暗示的对运动启示的唤起是否仅由对象手柄的物理方向驱动，而不是对象的更高级别属性，包括其功能，主要对象被呈现为垂直方向或从垂直方向旋转90度。旋转的物体成功地启动了适合物体新方位的手部动作(例如，煎锅旋转90度，使其手柄指向下方，启动了垂直方向的力量抓取)，但前提是所需的抓取与物体的适当功能相称。这一约束表明，只有当旋转的对象提供了随时定位以进行功能动作的可能性时，它们才会唤起运动表示。
Pictures of handled objects such as a beer mug or frying pan are shown to prime speeded reach and grasp actions that are compatible with the object. To determine whether the evocation of motor affordances implied by this result is driven merely by the physical orientation of the object's handle as opposed to higher-level properties of the object, including its function, prime objects were presented either in an upright orientation or rotated 90 degrees from upright. Rotated objects successfully primed hand actions that fit the object's new orientation (e. g., a frying pan rotated 90 degrees so that its handle pointed downward primed a vertically oriented power grasp), but only when the required grasp was commensurate with the object's proper function. This constraint suggests that rotated objects evoke motor representations only when they afford the potential to be readily positioned for functional action.