Temporal synchrony effects of optic flow and vestibular inputs on multisensory heading perception

Summary: Precise heading perception requires integration of optic flow and vestibular cues, yet the two cues often carry distinct temporal dynamics that may confound cue integration benefit. Here, we varied temporal offset between the two sensory inputs while macaques discriminated headings around s...

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Autores principales:	Qihao Zheng, Luxin Zhou, Yong Gu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	heading perception optic flow vestibular multisensory integration self-motion decision making Biology (General) QH301-705.5
Acceso en línea:	https://doaj.org/article/0d64728f3b0644ac9a3fd7660ddd30f1
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id	oai:doaj.org-article:0d64728f3b0644ac9a3fd7660ddd30f1
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spelling	oai:doaj.org-article:0d64728f3b0644ac9a3fd7660ddd30f12021-11-18T04:47:50ZTemporal synchrony effects of optic flow and vestibular inputs on multisensory heading perception2211-124710.1016/j.celrep.2021.109999https://doaj.org/article/0d64728f3b0644ac9a3fd7660ddd30f12021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2211124721014789https://doaj.org/toc/2211-1247Summary: Precise heading perception requires integration of optic flow and vestibular cues, yet the two cues often carry distinct temporal dynamics that may confound cue integration benefit. Here, we varied temporal offset between the two sensory inputs while macaques discriminated headings around straight ahead. We find the best heading performance does not occur under natural condition of synchronous inputs with zero offset but rather when visual stimuli are artificially adjusted to lead vestibular by a few hundreds of milliseconds. This amount exactly matches the lag between the vestibular acceleration and visual speed signals as measured from single-unit-activity in frontal and posterior parietal cortices. Manually aligning cues in these areas best facilitates integration with some nonlinear gain modulation effects. These findings are consistent with predictions from a model by which the brain integrates optic flow speed with a faster vestibular acceleration signal for sensing instantaneous heading direction during self-motion in the environment.Qihao ZhengLuxin ZhouYong GuElsevierarticleheading perceptionoptic flowvestibularmultisensory integrationself-motiondecision makingBiology (General)QH301-705.5ENCell Reports, Vol 37, Iss 7, Pp 109999- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	heading perception optic flow vestibular multisensory integration self-motion decision making Biology (General) QH301-705.5
spellingShingle	heading perception optic flow vestibular multisensory integration self-motion decision making Biology (General) QH301-705.5 Qihao Zheng Luxin Zhou Yong Gu Temporal synchrony effects of optic flow and vestibular inputs on multisensory heading perception
description	Summary: Precise heading perception requires integration of optic flow and vestibular cues, yet the two cues often carry distinct temporal dynamics that may confound cue integration benefit. Here, we varied temporal offset between the two sensory inputs while macaques discriminated headings around straight ahead. We find the best heading performance does not occur under natural condition of synchronous inputs with zero offset but rather when visual stimuli are artificially adjusted to lead vestibular by a few hundreds of milliseconds. This amount exactly matches the lag between the vestibular acceleration and visual speed signals as measured from single-unit-activity in frontal and posterior parietal cortices. Manually aligning cues in these areas best facilitates integration with some nonlinear gain modulation effects. These findings are consistent with predictions from a model by which the brain integrates optic flow speed with a faster vestibular acceleration signal for sensing instantaneous heading direction during self-motion in the environment.
format	article
author	Qihao Zheng Luxin Zhou Yong Gu
author_facet	Qihao Zheng Luxin Zhou Yong Gu
author_sort	Qihao Zheng
title	Temporal synchrony effects of optic flow and vestibular inputs on multisensory heading perception
title_short	Temporal synchrony effects of optic flow and vestibular inputs on multisensory heading perception
title_full	Temporal synchrony effects of optic flow and vestibular inputs on multisensory heading perception
title_fullStr	Temporal synchrony effects of optic flow and vestibular inputs on multisensory heading perception
title_full_unstemmed	Temporal synchrony effects of optic flow and vestibular inputs on multisensory heading perception
title_sort	temporal synchrony effects of optic flow and vestibular inputs on multisensory heading perception
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/0d64728f3b0644ac9a3fd7660ddd30f1
work_keys_str_mv	AT qihaozheng temporalsynchronyeffectsofopticflowandvestibularinputsonmultisensoryheadingperception AT luxinzhou temporalsynchronyeffectsofopticflowandvestibularinputsonmultisensoryheadingperception AT yonggu temporalsynchronyeffectsofopticflowandvestibularinputsonmultisensoryheadingperception
_version_	1718425020226600960

Temporal synchrony effects of optic flow and vestibular inputs on multisensory heading perception

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