Jeannerod M, Biguer B
Laboratoire de Neuropsychologie Expérimentale, INSERM U94, Bron, France.
Rev Neurol (Paris). 1989;145(8-9):635-9.
The subjective estimate of the position of the egocentric reference was measured in normal right-handed subjects. They had to point manually in the straight ahead direction at what they thought was their body's sagittal plane. A systematic leftward bias of relatively small amplitude was observed for pointings with the right hand. No such bias was observed with the left hand. In addition, fixation of a visual target located within the right or left hemispace systematically deviated the estimated egocentric reference toward the side opposite to the target. These results contribute to the mechanisms responsible for directional coding of movements toward extrapersonal space.
在正常右利手受试者中测量了以自我为中心的参考位置的主观估计。他们必须手动指向他们认为是自己身体矢状面的正前方方向。观察到用右手指向时存在幅度相对较小的系统性向左偏差。用左手指向时未观察到这种偏差。此外，对位于右半空间或左半空间内的视觉目标的注视会使估计的以自我为中心的参考系统地偏向与目标相反的一侧。这些结果有助于解释负责向个人空间外运动的方向编码的机制。
