Tactile Flow Overrides Other Cues To Self Motion

Abstract Vestibular-somatosensory interactions are pervasive in the brain but it remains unclear why. Here we explore the contribution of tactile flow to processing self-motion. We assessed two aspects of self-motion: timing and speed. Participants sat on an oscillating swing and either kept their h...

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Autores principales:	Laurence R. Harris, Kenzo Sakurai, William H. A. Beaudot
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/637ba92f372d4ed39cde63f95a29b8b9
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id	oai:doaj.org-article:637ba92f372d4ed39cde63f95a29b8b9
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spelling	oai:doaj.org-article:637ba92f372d4ed39cde63f95a29b8b92021-12-02T15:05:23ZTactile Flow Overrides Other Cues To Self Motion10.1038/s41598-017-01111-w2045-2322https://doaj.org/article/637ba92f372d4ed39cde63f95a29b8b92017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01111-whttps://doaj.org/toc/2045-2322Abstract Vestibular-somatosensory interactions are pervasive in the brain but it remains unclear why. Here we explore the contribution of tactile flow to processing self-motion. We assessed two aspects of self-motion: timing and speed. Participants sat on an oscillating swing and either kept their hands on their laps or rested them lightly on an earth-stationary surface. They viewed a grating oscillating at the same frequency as their motion and judged its phase or, in a separate experiment, its speed relative to their perceived motion. Participants required the phase to precede body movement (with or without tactile flow) or tactile flow by ~5° (44 ms) to appear earth-stationary. Speed judgments were 4–10% faster when motion was from tactile flow, either alone or with body motion, compared to body motion alone (where speed judgments were accurate). By comparing response variances we conclude that phase and speed judgments do not reflect optimal integration of tactile flow with other cues to body motion: instead tactile flow dominates perceived self-motion – acting as an emergency override. This may explain why even minimal tactile cues are so helpful in promoting stability and suggests that providing artificial tactile cues might be a powerful aid to perceiving self-motion.Laurence R. HarrisKenzo SakuraiWilliam H. A. BeaudotNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Laurence R. Harris Kenzo Sakurai William H. A. Beaudot Tactile Flow Overrides Other Cues To Self Motion
description	Abstract Vestibular-somatosensory interactions are pervasive in the brain but it remains unclear why. Here we explore the contribution of tactile flow to processing self-motion. We assessed two aspects of self-motion: timing and speed. Participants sat on an oscillating swing and either kept their hands on their laps or rested them lightly on an earth-stationary surface. They viewed a grating oscillating at the same frequency as their motion and judged its phase or, in a separate experiment, its speed relative to their perceived motion. Participants required the phase to precede body movement (with or without tactile flow) or tactile flow by ~5° (44 ms) to appear earth-stationary. Speed judgments were 4–10% faster when motion was from tactile flow, either alone or with body motion, compared to body motion alone (where speed judgments were accurate). By comparing response variances we conclude that phase and speed judgments do not reflect optimal integration of tactile flow with other cues to body motion: instead tactile flow dominates perceived self-motion – acting as an emergency override. This may explain why even minimal tactile cues are so helpful in promoting stability and suggests that providing artificial tactile cues might be a powerful aid to perceiving self-motion.
format	article
author	Laurence R. Harris Kenzo Sakurai William H. A. Beaudot
author_facet	Laurence R. Harris Kenzo Sakurai William H. A. Beaudot
author_sort	Laurence R. Harris
title	Tactile Flow Overrides Other Cues To Self Motion
title_short	Tactile Flow Overrides Other Cues To Self Motion
title_full	Tactile Flow Overrides Other Cues To Self Motion
title_fullStr	Tactile Flow Overrides Other Cues To Self Motion
title_full_unstemmed	Tactile Flow Overrides Other Cues To Self Motion
title_sort	tactile flow overrides other cues to self motion
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/637ba92f372d4ed39cde63f95a29b8b9
work_keys_str_mv	AT laurencerharris tactileflowoverridesothercuestoselfmotion AT kenzosakurai tactileflowoverridesothercuestoselfmotion AT williamhabeaudot tactileflowoverridesothercuestoselfmotion
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Tactile Flow Overrides Other Cues To Self Motion

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