Hartley L R, Serna P, Arnold P K, Mulligan B
Department of Psychology, Murdoch University, Western Australia.
Physiol Behav. 1990 May;47(5):837-41. doi: 10.1016/0031-9384(90)90006-p.
The authors previously found that emotional arousal increased the asymmetry of facial and other lateralised expressive behaviours. Chlorpromazine equalized the symmetry of behaviour by reducing emotional arousal rather than by blocking all behaviour. These results raise the question of whether the perception of emotion is also lateralised and similarly influenced by chlorpromazine. Sixteen student volunteers were administered placebo and 50 mg of chlorpromazine in tablet form on separate occasions two hours before carrying out two tests of lateralised perception. Dichotic recognition of positive and neutral but not negative emotional words revealed a right ear advantage. No drug effect was observed. The speed of recognition of words and nonwords was also examined following emotionally toned priming words lateralised to the visual hemifields. This task showed some parallel findings to the dichotic test but some lateralised effect of the drug was observed.
作者们之前发现，情绪唤起会增加面部及其他单侧化表达行为的不对称性。氯丙嗪通过降低情绪唤起而非阻断所有行为来使行为的对称性趋于均衡。这些结果引发了一个问题，即情绪感知是否也存在单侧化，以及是否同样受氯丙嗪影响。16名学生志愿者在进行两项单侧化感知测试前两小时，分别在不同时间服用了安慰剂和50毫克片剂形式的氯丙嗪。对积极和中性而非消极情绪词汇的双耳分听识别显示出右耳优势。未观察到药物效应。在对视觉半视野单侧化呈现的带有情绪色彩的启动词之后，还对词汇和非词汇的识别速度进行了检测。这项任务显示出与双耳分听测试的一些相似发现，但也观察到了药物的一些单侧化效应。
