title: Perceptually plausible sounds facilitate visually induced self-motion perception (vection).
abstract: We examined whether and how sounds influence visually induced illusory self-motion (vection). Visual stimuli were presented for 40 s. They were made radially, expanding or contracting visual motion field and luminance-defined gratings drifting in a vertical or horizontal direction. Auditory stimuli were presented with the visual stimuli in most conditions; we employed sounds that increased or decreased in intensity, or ascended or descended in frequency. As a result, the sound which increased in intensity facilitated forward vection, and the sound which ascended/descended in frequency facilitated upward/downward vection. The perceptual plausibility of the sound for the corresponding self-motion seemed an important factor of enhancing vection.
authors.affiliation: Faculty of Design, Kyushu University, 4-9-1 Shiobaru, Minami-ku, Fukuoka 815-8540, Japan. seno@design.kyushu-u.ac.jp
authors.forename: Takeharu
authors.initials: T
authors.lastname: Seno
authors.forename: Emi
authors.initials: E
authors.lastname: Hasuo
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ito
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Nakajima
mesh_terms: D000328:Adult; D001307:Auditory Perception; D001364:Awareness; D015350:Contrast Sensitivity; D004215:Distance Perception; D005260:Female; D006801:Humans; D007088:Illusions; D007699:Kinesthesis; D008144:Loudness Perception; D008297:Male; D009039:Motion Perception; D009949:Orientation; D010364:Pattern Recognition, Visual; D013018:Sound Spectrography; D055815:Young Adult