Effect of sound on perceptual masking in apparent motion trajectory(Summary of Awarded Presentation at the 30th Annual Meeting)
2012 年 31 巻 1 号 p. 81-82
詳細
2012 年 31 巻 1 号 p. 81-82
Our previous study showed that detection performance was impaired for a visual target in an apparent motion (AM) trajectory. Moreover, the magnitude of this AM interference became weaker when the orientation information of the target was inconsistent with that of AM stimuli. These findings suggest that internal object representations of AM stimuli established in the AM trajectory can induce perceptual masking. The present study demonstrates auditory effects on AM interference: 1) Transient sounds presented together with AM stimuli can enhance the magnitude of AM interference, 2) this auditory effect weakened when the frequencies of the sounds changed during AM, and 3) the sounds wholly strengthened the magnitude of AM interference against the inconsistency in orientation information between the target and AM stimuli. These results suggest that sounds can contribute to the robust establishment and spatiotemporal maintenance of the internal object representation of an AM stimulus.
