Subjective Audibility Modulates the Susceptibility to Sound-Induced Flash Illusion: Effect of Loudness and Auditory Masking
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- Yuki Ito
- Organization for Research initiatives and Development, Doshisha University, 1-3 Tataramiyakodani, Kyotanabe, 610-0394, Japan
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- Hanaka Matsumoto
- Graduate School of Life and Medical Sciences, Doshisha University, 1-3 Tataramiyakodani, Kyotanabe, 610-0394, Japan
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- Kohta I. Kobayasi
- Graduate School of Life and Medical Sciences, Doshisha University, 1-3 Tataramiyakodani, Kyotanabe, 610-0394, Japan
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説明
<jats:title>Abstract</jats:title> <jats:p>When a brief flash is presented along with two brief sounds, the single flash is often perceived as two flashes. This phenomenon is called a sound-induced flash illusion, in which the auditory sense, with its relatively higher reliability in providing temporal information, modifies the visual perception. Decline of audibility due to hearing impairment is known to make subjects less susceptible to the flash illusion. However, the effect of decline of audibility on susceptibility to the illusion has not been directly investigated in subjects with normal hearing. The present study investigates the relationship between audibility and susceptibility to the illusion by varying the sound pressure level of the stimulus. In the task for reporting the number of auditory stimuli, lowering the sound pressure level caused the rate of perceiving two sounds to decrease on account of forward masking. The occurrence of the illusory flash was reduced as the intensity of the second auditory stimulus decreased, and was significantly correlated with the rate of perceiving the two auditory stimuli. These results suggest that the susceptibility to sound-induced flash illusion depends on the subjective audibility of each sound.</jats:p>
収録刊行物
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- Multisensory Research
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Multisensory Research 36 (7), 613-629, 2023-09-29
Walter de Gruyter GmbH
