Montreal Neurological Institute, Montreal, QC, Canada.
Appl Psychophysiol Biofeedback. 2012 Sep;37(3):145-52. doi: 10.1007/s10484-011-9177-7.
Skin conductance responses (SCR) measure objective arousal in response to emotionally-relevant stimuli. Central nervous system influence on SCR is exerted differentially by the two hemispheres. Differences between SCR recordings from the left and right hands may therefore be expected. This study focused on emotionally expressive faces, known to be processed differently by the two hemispheres. Faces depicting neutral, happy, sad, angry, fearful or disgusted expressions were presented in two tasks, one with an explicit emotion judgment and the other with an age judgment. We found stronger responses to sad and happy faces compared with neutral from the left hand during the implicit task, and stronger responses to negative emotions compared with neutral from the right hand during the explicit task. Our results suggest that basic social stimuli generate distinct responses on the two hands, no doubt related to the lateralization of social function in the brain.
皮肤电反应（SCR）测量对情绪相关刺激的客观唤醒程度。中枢神经系统对 SCR 的影响通过两个半球以不同的方式发挥作用。因此，可以预期左手和右手的 SCR 记录之间会存在差异。本研究集中在情绪表达的面部，已知这些面部由两个半球以不同的方式处理。呈现了描绘中性、快乐、悲伤、愤怒、恐惧或厌恶表情的面部，在两个任务中进行了呈现，一个任务带有明确的情绪判断，另一个任务带有年龄判断。我们发现，在隐含任务中，与中性表情相比，左手对悲伤和快乐面孔的反应更强，而在明确任务中，与中性表情相比，右手对负面情绪的反应更强。我们的结果表明，基本的社会刺激会在两只手上产生不同的反应，这无疑与大脑中社会功能的偏侧化有关。
