Tillery S I, Flanders M, Soechting J F
Department of Physiology, University of Minnesota, Minneapolis 55455, USA.
Neuroreport. 1994 Dec 30;6(1):177-81. doi: 10.1097/00001756-199412300-00045.
We investigated the ability of human subjects to duplicate with the left hand the spatial location of the right hand, using only kinesthetic cues. Under this experimental condition, subjects produced large and idiosyncratic errors which varied with the spatial location of the hand. Tactile cues originating from contact of the hand with a rigid surface generally led to a decrease in the variable error. However, even without tactile cues, the variable error was small compared with other tasks in which subjects are required to estimate the spatial location of the hand on the basis of kinesthetic cues. The results suggest that subjects did not derive an estimate of the location of the right hand in extrapersonal space, but rather that they performed the task within intrapersonal space.
我们研究了人类受试者仅利用动觉线索用左手复制右手空间位置的能力。在这种实验条件下，受试者产生了较大且因人而异的误差，这些误差随手的空间位置而变化。源于手与刚性表面接触的触觉线索通常会导致可变误差减小。然而，即使没有触觉线索，与其他要求受试者根据动觉线索估计手的空间位置的任务相比，可变误差也较小。结果表明，受试者并未得出右手在个人空间外位置的估计，而是在个人空间内执行该任务。
