School of Psychology, The University of Sydney, Sydney, NSW 2006, Australia.
Exp Brain Res. 2012 Jul;220(1):71-7. doi: 10.1007/s00221-012-3116-6. Epub 2012 May 19.
There is an increasing evidence that the action properties of manipulable objects can play a role in object recognition, as objects with similar action properties can facilitate each other's recognition [Helbig et al. Exp Brain Res 174:221-228, 2006]. However, it is unclear whether this modulation is driven by the actions involved in using the object or the grasps afforded by the objects, because these factors have been confounded in previous studies. Here, we attempted to disentangle the relative contributions of the action and grasp properties by using a priming paradigm in which action and grasp similarity between two objects were varied orthogonally. We found that target tools with similar grasp properties to the prime tool were named more accurately than those with dissimilar grasps. However, naming accuracy was not affected by the similarity of action properties between the prime and target tools. This suggests that knowledge about how an object is used is not automatically accessed when identifying a manipulable object. What are automatically accessed are the transformations necessary to interact directly with the object--i.e., the manner in which one grasps the object.
越来越多的证据表明，可操作性物体的动作属性在物体识别中起着作用，因为具有相似动作属性的物体可以相互促进识别[Helbig 等人，Exp Brain Res 174:221-228, 2006]。然而，目前尚不清楚这种调制是由使用物体所涉及的动作还是由物体提供的抓握驱动的，因为在以前的研究中，这些因素是混淆的。在这里，我们试图通过使用启动范式来区分动作和抓握属性的相对贡献，在该范式中，两个物体之间的动作和抓握相似性是正交变化的。我们发现，与启动工具具有相似抓握属性的目标工具的命名比具有不同抓握属性的目标工具更准确。然而，动作属性之间的相似性对目标工具的命名准确性没有影响。这表明，在识别可操作性物体时，关于物体如何使用的知识不会自动被获取。自动获取的是与物体直接交互所需的变换，即一个人抓握物体的方式。
