Interaction of perceptual grouping and crossmodal temporal capture in tactile apparent-motion.

Previous studies have shown that in tasks requiring participants to report the direction of apparent motion, task-irrelevant mono-beeps can "capture" visual motion perception when the beeps occur temporally close to the visual stimuli. However, the contributions of the relative timing of m...

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Autores principales:	Lihan Chen, Zhuanghua Shi, Hermann J Müller
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/42ad241a2256406294aa54b737e5bad8
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spelling	oai:doaj.org-article:42ad241a2256406294aa54b737e5bad82021-11-18T06:58:22ZInteraction of perceptual grouping and crossmodal temporal capture in tactile apparent-motion.1932-620310.1371/journal.pone.0017130https://doaj.org/article/42ad241a2256406294aa54b737e5bad82011-02-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21383834/?tool=EBIhttps://doaj.org/toc/1932-6203Previous studies have shown that in tasks requiring participants to report the direction of apparent motion, task-irrelevant mono-beeps can "capture" visual motion perception when the beeps occur temporally close to the visual stimuli. However, the contributions of the relative timing of multimodal events and the event structure, modulating uni- and/or crossmodal perceptual grouping, remain unclear. To examine this question and extend the investigation to the tactile modality, the current experiments presented tactile two-tap apparent-motion streams, with an SOA of 400 ms between successive, left-/right-hand middle-finger taps, accompanied by task-irrelevant, non-spatial auditory stimuli. The streams were shown for 90 seconds, and participants' task was to continuously report the perceived (left- or rightward) direction of tactile motion. In Experiment 1, each tactile stimulus was paired with an auditory beep, though odd-numbered taps were paired with an asynchronous beep, with audiotactile SOAs ranging from -75 ms to 75 ms. Perceived direction of tactile motion varied systematically with audiotactile SOA, indicative of a temporal-capture effect. In Experiment 2, two audiotactile SOAs--one short (75 ms), one long (325 ms)--were compared. The long-SOA condition preserved the crossmodal event structure (so the temporal-capture dynamics should have been similar to that in Experiment 1), but both beeps now occurred temporally close to the taps on one side (even-numbered taps). The two SOAs were found to produce opposite modulations of apparent motion, indicative of an influence of crossmodal grouping. In Experiment 3, only odd-numbered, but not even-numbered, taps were paired with auditory beeps. This abolished the temporal-capture effect and, instead, a dominant percept of apparent motion from the audiotactile side to the tactile-only side was observed independently of the SOA variation. These findings suggest that asymmetric crossmodal grouping leads to an attentional modulation of apparent motion, which inhibits crossmodal temporal-capture effects.Lihan ChenZhuanghua ShiHermann J MüllerPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 2, p e17130 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lihan Chen Zhuanghua Shi Hermann J Müller Interaction of perceptual grouping and crossmodal temporal capture in tactile apparent-motion.
description	Previous studies have shown that in tasks requiring participants to report the direction of apparent motion, task-irrelevant mono-beeps can "capture" visual motion perception when the beeps occur temporally close to the visual stimuli. However, the contributions of the relative timing of multimodal events and the event structure, modulating uni- and/or crossmodal perceptual grouping, remain unclear. To examine this question and extend the investigation to the tactile modality, the current experiments presented tactile two-tap apparent-motion streams, with an SOA of 400 ms between successive, left-/right-hand middle-finger taps, accompanied by task-irrelevant, non-spatial auditory stimuli. The streams were shown for 90 seconds, and participants' task was to continuously report the perceived (left- or rightward) direction of tactile motion. In Experiment 1, each tactile stimulus was paired with an auditory beep, though odd-numbered taps were paired with an asynchronous beep, with audiotactile SOAs ranging from -75 ms to 75 ms. Perceived direction of tactile motion varied systematically with audiotactile SOA, indicative of a temporal-capture effect. In Experiment 2, two audiotactile SOAs--one short (75 ms), one long (325 ms)--were compared. The long-SOA condition preserved the crossmodal event structure (so the temporal-capture dynamics should have been similar to that in Experiment 1), but both beeps now occurred temporally close to the taps on one side (even-numbered taps). The two SOAs were found to produce opposite modulations of apparent motion, indicative of an influence of crossmodal grouping. In Experiment 3, only odd-numbered, but not even-numbered, taps were paired with auditory beeps. This abolished the temporal-capture effect and, instead, a dominant percept of apparent motion from the audiotactile side to the tactile-only side was observed independently of the SOA variation. These findings suggest that asymmetric crossmodal grouping leads to an attentional modulation of apparent motion, which inhibits crossmodal temporal-capture effects.
format	article
author	Lihan Chen Zhuanghua Shi Hermann J Müller
author_facet	Lihan Chen Zhuanghua Shi Hermann J Müller
author_sort	Lihan Chen
title	Interaction of perceptual grouping and crossmodal temporal capture in tactile apparent-motion.
title_short	Interaction of perceptual grouping and crossmodal temporal capture in tactile apparent-motion.
title_full	Interaction of perceptual grouping and crossmodal temporal capture in tactile apparent-motion.
title_fullStr	Interaction of perceptual grouping and crossmodal temporal capture in tactile apparent-motion.
title_full_unstemmed	Interaction of perceptual grouping and crossmodal temporal capture in tactile apparent-motion.
title_sort	interaction of perceptual grouping and crossmodal temporal capture in tactile apparent-motion.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/42ad241a2256406294aa54b737e5bad8
work_keys_str_mv	AT lihanchen interactionofperceptualgroupingandcrossmodaltemporalcaptureintactileapparentmotion AT zhuanghuashi interactionofperceptualgroupingandcrossmodaltemporalcaptureintactileapparentmotion AT hermannjmuller interactionofperceptualgroupingandcrossmodaltemporalcaptureintactileapparentmotion
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Interaction of perceptual grouping and crossmodal temporal capture in tactile apparent-motion.

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