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Falling Pitch Imitating Doppler Shift Facilitates Detection of Visual Motion in The Extreme-Periphery

Suegami, Takashi and Changizi, Mark and Berger, Christopher C. and Wu, Daw-An J. and Shimojo, Shinsuke (2019) Falling Pitch Imitating Doppler Shift Facilitates Detection of Visual Motion in The Extreme-Periphery. i-Perception, 10 (S3). p. 134. ISSN 2041-6695. doi:10.1177/2041669519877985.

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Previous studies demonstrated that concurrent auditory stimuli can bias visual motion perception in the periphery more than in the fovea (e.g., Takeshima & Gyoba, 2013), and auditory becomes crucial when reliability of vision is reduced (e.g., Schmiedchen et al., 2012). We investigated if auditory affects detecting extreme-peripheral visual motion from behind, which is possibly one of the most salient situations since visual ambiguity is very high and detecting such motion can be ecologically critical to survive. In the experiment, a sequence of three 204 ms dots (255 ms SOA) was presented in the extreme-periphery (individually set by the largest eccentricity with 75% detection); each dot was presented at 3 adjacent locations with 2° distance so as to have apparent motion forward, or at the same location. As auditory stimuli, we employed concurrent beep with falling pitch, which roughly imitated Doppler pitch shift for passing-by object. We employed concurrent beep with rising pitch as a control, in addition to another no sound control. The results showed the concurrent beep with falling pitch increased the hit rate for motion detection, relative to that with no sound and rising pitch beep. Underlying mechanism was discussed with signal detection analysis.

Item Type:Article
Related URLs:
URLURL TypeDescription
Berger, Christopher C.0000-0002-8338-0752
Wu, Daw-An J.0000-0003-4296-3369
Additional Information:© 2019 The Author(s). Creative Commons CC BY: This article is distributed under the terms of the Creative Commons Attribution 4.0 License ( which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages ( Article first published online: October 15, 2019; Issue published: September 1, 2019. Grant: Yamaha Motor Corporation U.S.A.
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Yamaha Motor CorporationUNSPECIFIED
Subject Keywords:periphery, cross modal, motion detection, visual perception
Issue or Number:S3
Record Number:CaltechAUTHORS:20191031-085711699
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:99576
Deposited By: Tony Diaz
Deposited On:31 Oct 2019 17:57
Last Modified:16 Nov 2021 17:47

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