Volcic Robert, Wijntjes Maarten W A, Kappers Astrid M L
Helmholtz Institute, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.
Acta Psychol (Amst). 2009 Mar;130(3):251-9. doi: 10.1016/j.actpsy.2009.01.004. Epub 2009 Feb 24.
The nature of reference frames involved in haptic spatial processing was addressed by means of a haptic mental rotation task. Participants assessed the parity of two objects located in various spatial locations by exploring them with different hand orientations. The resulting response times were fitted with a triangle wave function. Phase shifts were found to depend on the relation between the hands and the objects, and between the objects and the body. We rejected the possibility that a single reference frame drives spatial processing. Instead, we found evidence of multiple interacting reference frames with the hand-centered reference frame playing the dominant role. We propose that a weighted average of the allocentric, the hand-centered and the body-centered reference frames influences the haptic encoding of spatial information. In addition, we showed that previous results can be reinterpreted within the framework of multiple reference frames. This mechanism has proved to be ubiquitously present in haptic spatial processing.
通过一项触觉心理旋转任务，研究了触觉空间处理中所涉及的参照系的性质。参与者通过用不同的手部方位探索位于不同空间位置的两个物体，来评估它们的奇偶性。将由此产生的反应时间与一个三角波函数进行拟合。发现相移取决于手与物体之间以及物体与身体之间的关系。我们排除了单一参照系驱动空间处理的可能性。相反，我们发现了多个相互作用的参照系的证据，其中以手为中心的参照系起主导作用。我们提出，以自我为中心、以手为中心和以身体为中心的参照系的加权平均值会影响空间信息的触觉编码。此外，我们表明，以前的结果可以在多个参照系的框架内重新解释。这一机制已被证明普遍存在于触觉空间处理中。
