Bensafi M, Rouby C, Farget V, Vigouroux M, Holley A
Laboratoire de Neurosciences et Systèmes Sensoriels, CNRS UMR 5020, and Université Claude Bernard Lyon 1, 50 Avenue Tony Garnier, 69366 Cedex 07, Lyon, France.
Neurosci Lett. 2002 Aug 16;328(3):309-13. doi: 10.1016/s0304-3940(02)00548-7.
The objective of the present study was to investigate interactions between odor hedonic tone, perceived odor intensity, olfactory judgments and stimulated nostril laterality. Subjects were stimulated in the right and the left nostril separately, with two odors: vanillin (pleasant); and indole (unpleasant). They had two tasks to perform: an intensity judgment; and an affective judgment. Two concentrations (one strong and one weak) of each odor were presented. Odors were presented for a short period corresponding to one inhalation (about 1 s). The inter-stimulus interval was always 30 s. The nostril stimulated and task presentation order were counterbalanced according to a Latin square. Odor presentation order was randomized for each subject. Results indicated that response times for unpleasant odors were significantly shorter than for pleasant odors during affective judgment and right nostril stimulation, indicating greater right hemisphere efficiency for the decoding of unpleasant affects induced by odors.
本研究的目的是调查气味享乐基调、感知到的气味强度、嗅觉判断和受刺激鼻孔的偏向性之间的相互作用。分别用香草醛（令人愉悦）和吲哚（令人不快）这两种气味对受试者的右鼻孔和左鼻孔进行刺激。他们有两项任务要完成：强度判断和情感判断。每种气味呈现两种浓度（一种浓，一种淡）。气味呈现的时间较短，相当于一次吸气（约1秒）。刺激间隔始终为30秒。根据拉丁方对受刺激的鼻孔和任务呈现顺序进行平衡处理。每个受试者的气味呈现顺序是随机的。结果表明，在情感判断和右鼻孔刺激过程中，不愉快气味的反应时间明显短于愉快气味，这表明右半球在解码由气味引起的不愉快情感方面效率更高。
