Contribution of the positive emotional sounds to upward vection


We examined the effect of positive sounds on upward self-motion perception (vection). Observers listened to positive (e.g., a baby’s laughter) or neutral (e.g., a sound of helicopter’s propeller) emotional sounds during viewing a large vertically moving sinusoidal luminance-defined grating (78 deg × 62 deg). The results showed that the upward vection was enhanced by the positive emotional sounds, but not the neutral emotional sounds. This might be because positive affects are linked with spatial/directional “up ” in our mind.

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