Department of Psychology, University of Victoria, P. O. Box 3050 STN CSC, Victoria, British Columbia V8W 3P5, Canada.
J Exp Psychol Hum Percept Perform. 2011 Oct;37(5):1470-84. doi: 10.1037/a0023509.
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° from upright. Rotated objects successfully primed hand actions that fit the object's new orientation (e.g., a frying pan rotated 90° 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.
呈现处理过的物体的图片，如啤酒杯或煎锅，以启动与物体兼容的快速伸手和抓握动作。为了确定这种结果所暗示的运动可供性的唤起是否仅仅是由物体手柄的物理方向驱动，而不是物体的更高层次的属性，包括其功能，将物体呈现为垂直方向或从垂直方向旋转 90°。旋转的物体成功地启动了适合物体新方向的手部动作（例如，旋转 90°的煎锅，使其手柄向下，启动垂直方向的力量抓握），但前提是所需的抓握与物体的适当功能相匹配。这种约束表明，只有当旋转的物体能够为功能动作提供方便的定位时，它们才会唤起运动表现。
