Hisato IMAI

Expressing an emotion is one of important factors in making good interpersonal communication. In this study, we examined whether a subliminal mere exposure to both positive and negative facial expressions influences on interpersonal impression. We found that an exposure to angry face induced a good impression on the subsequently presented same person's neutral face. The exposure to a happy face induced an opposite effect. Rate of pupil constriction was faster when the angry face was subliminally presented than when the happy face was presented. These results indicate that a misattnbution of the strength of cognitive fluency to "likeable feeling" eventually forms good impression for others.

Previous studies have revealed a temporal window in which human observers perceive physically desynchronized auditory and visual signals as synchronous. This temporal window of auditory-visual integration is recalibrated after adaptation to a constant timing difference between auditory and visual signals in nonspeech. In this study, we investigated whether this temporal recalibration occurs in speech. Participants observed monosyllabic audio-visual speech stimuli which had constant timing difference, and then performed the temporal order judgment. We varied the duration of adaptation to reveal whether it affects the temporal recalibration or not. The results suggested that the temporal recalibration for speech occurred and might be affected by the duration of adaptation and the context preceding each judgement.