Vision-based speedometer regulates human walking

Summary: Can we recover self-motion from vision? This basic issue remains unsolved since, while the human visual system is known to estimate the direction of self-motion from optic flow, it remains unclear whether it also estimates the speed. Importantly, the latter requires disentangling self-motio...

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Autores principales:	Shinya Takamuku, Hiroaki Gomi
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Biological sciences Neuroscience Behavioral neuroscience Sensory neuroscience Science Q
Acceso en línea:	https://doaj.org/article/7aa913779cb948f9be53b980fba7dbc7
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id	oai:doaj.org-article:7aa913779cb948f9be53b980fba7dbc7
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spelling	oai:doaj.org-article:7aa913779cb948f9be53b980fba7dbc72021-11-18T04:51:14ZVision-based speedometer regulates human walking2589-004210.1016/j.isci.2021.103390https://doaj.org/article/7aa913779cb948f9be53b980fba7dbc72021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2589004221013614https://doaj.org/toc/2589-0042Summary: Can we recover self-motion from vision? This basic issue remains unsolved since, while the human visual system is known to estimate the direction of self-motion from optic flow, it remains unclear whether it also estimates the speed. Importantly, the latter requires disentangling self-motion speed and depths of objects in the scene as retinal velocity depends on both. Here we show that our automatic regulator of walking speed based on vision, which estimates and maintains the speed to its preferred range by adjusting stride length, is robust to changes in the depths. The robustness was not explained by temporal-frequency-based speed coding previously suggested to underlie depth-invariant object-motion perception. Meanwhile, it broke down, not only when the interocular distance was virtually manipulated but also when monocular depth cues were deceptive. These observations suggest that our visuomotor system embeds a speedometer that calculates self-motion speed from vision by integrating monocular/binocular depth and motion cues.Shinya TakamukuHiroaki GomiElsevierarticleBiological sciencesNeuroscienceBehavioral neuroscienceSensory neuroscienceScienceQENiScience, Vol 24, Iss 12, Pp 103390- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Biological sciences Neuroscience Behavioral neuroscience Sensory neuroscience Science Q
spellingShingle	Biological sciences Neuroscience Behavioral neuroscience Sensory neuroscience Science Q Shinya Takamuku Hiroaki Gomi Vision-based speedometer regulates human walking
description	Summary: Can we recover self-motion from vision? This basic issue remains unsolved since, while the human visual system is known to estimate the direction of self-motion from optic flow, it remains unclear whether it also estimates the speed. Importantly, the latter requires disentangling self-motion speed and depths of objects in the scene as retinal velocity depends on both. Here we show that our automatic regulator of walking speed based on vision, which estimates and maintains the speed to its preferred range by adjusting stride length, is robust to changes in the depths. The robustness was not explained by temporal-frequency-based speed coding previously suggested to underlie depth-invariant object-motion perception. Meanwhile, it broke down, not only when the interocular distance was virtually manipulated but also when monocular depth cues were deceptive. These observations suggest that our visuomotor system embeds a speedometer that calculates self-motion speed from vision by integrating monocular/binocular depth and motion cues.
format	article
author	Shinya Takamuku Hiroaki Gomi
author_facet	Shinya Takamuku Hiroaki Gomi
author_sort	Shinya Takamuku
title	Vision-based speedometer regulates human walking
title_short	Vision-based speedometer regulates human walking
title_full	Vision-based speedometer regulates human walking
title_fullStr	Vision-based speedometer regulates human walking
title_full_unstemmed	Vision-based speedometer regulates human walking
title_sort	vision-based speedometer regulates human walking
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/7aa913779cb948f9be53b980fba7dbc7
work_keys_str_mv	AT shinyatakamuku visionbasedspeedometerregulateshumanwalking AT hiroakigomi visionbasedspeedometerregulateshumanwalking
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Vision-based speedometer regulates human walking

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