Wang Xiaotao, Du Feng, He Xiaosong, Zhang Kan
Institute of Psychology, Chinese Academy of Sciences.
Key Laboratory of Behavioral Science, Institute of Psychology, Chinese Academy of Sciences.
J Exp Psychol Hum Percept Perform. 2014 Dec;40(6):2252-65. doi: 10.1037/a0038140. Epub 2014 Oct 13.
Emerging evidence has revealed that visual processing of objects near the hands is altered. The present study shows that the visuomotor Simon effect when the hands are proximal to stimuli is greater than that observed when the hands are far from stimuli, thereby indicating stronger spatial stimulus-response mapping near the hands. The visuomotor Simon effect is robustly enhanced near the hands even when hand visibility and stimulus-response axis-similarity are controlled. However, the semantic Simon effect with location words is not modulated by hand-stimulus proximity. Thus, consistent with the dimensional overlap model and the known features of the bimodal visuotactile neurons, hand-stimulus proximity enhances spatial stimulus-response mapping but has no effect on semantic processing of location words.
新出现的证据表明，手部附近物体的视觉处理发生了改变。本研究表明，当手部靠近刺激物时的视运动西蒙效应大于手部远离刺激物时观察到的效应，从而表明手部附近的空间刺激-反应映射更强。即使控制了手部可见性和刺激-反应轴相似性，视运动西蒙效应在手部附近仍会显著增强。然而，带有位置词的语义西蒙效应不受手部与刺激物接近程度的调节。因此，与维度重叠模型和双峰视觉触觉神经元的已知特征一致，手部与刺激物的接近程度增强了空间刺激-反应映射，但对位置词的语义处理没有影响。
