Pelgrims Barbara, Andres Michaël, Olivier Etienne
Laboratory of Neurophysiology, Université catholique de Louvain, 54 Avenue Hippocrate, 1200 Brussels, Belgium.
Neuroreport. 2005 Aug 1;16(11):1193-6. doi: 10.1097/00001756-200508010-00012.
Because corticospinal excitability, as assessed with transcranial magnetic stimulation, has been repeatedly shown to increase during motor imagery, we used this approach to determine whether appreciating object-hand interactions involves motor imagery. Corticospinal excitability was measured in nine healthy participants who were asked to decide whether a hand presented in a given posture was compatible with the use of an object. The control task consisted in deciding whether two hands were in the same posture; a dimming task was used to determine the baseline. We found a significant increase in corticospinal excitability while judging object-hand interactions in comparison with the two other tasks. This finding suggests that predicting the consequences of an action involves implicit motor imagery.
由于经颅磁刺激评估的皮质脊髓兴奋性在运动想象期间反复显示会增加，我们采用这种方法来确定理解物体与手的相互作用是否涉及运动想象。对九名健康参与者测量了皮质脊髓兴奋性，这些参与者被要求判断以给定姿势呈现的一只手是否与使用某个物体相匹配。对照任务是判断两只手是否处于相同姿势；采用调光任务来确定基线。我们发现，与其他两项任务相比，在判断物体与手的相互作用时，皮质脊髓兴奋性显著增加。这一发现表明，预测一个动作的后果涉及内隐运动想象。
