The Effects of Hedonic Properties of Odors and Attentional Modulation on the Olfactory Event - Related Potentials

概要

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The purpose of this study was to investigate the influence of the hedonic properties of odors and the attention of subjects on components of the olfactory eventrelated potentials (OERP). He subjects were seven healthy male students. Two odors (orange and eugenol) of different hedonic properties were presented to the subjects via a constant - frow olfactometer during an oddball paradigm underignore and attend conditions, and the OERP were then established. The latencies of the OERP were not affected by the qualitatively different odors, whereas the amplitude of late positive component (P3) during the presentation of orange was significantly larger than that during the presentation of eugenol. On the other hand, the allocation of a subject's attention led to a decrease in the latency and to an increase in the amplitude of P3. Moreover, the amplitude of P3 increased significantly when the pleasant odor (orange) in the rare stimulus was presented under the attend condition. These results suggested that hedonic property, distribution of attention, and the interaction between these factors may influence the OERP components.
日本生理人類学会の論文