Humans use Optokinetic Eye Movements to Track Waypoints for Steering

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http://hdl.handle.net/10138/313856

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Lappi , O , Pekkanen , J , Rinkkala , P , Tuhkanen , S , Tuononen , A & Virtanen , J-P 2020 , ' Humans use Optokinetic Eye Movements to Track Waypoints for Steering ' , Scientific Reports , vol. 10 , no. 1 , 4175 . https://doi.org/10.1038/s41598-020-60531-3

Title: Humans use Optokinetic Eye Movements to Track Waypoints for Steering
Author: Lappi, Otto; Pekkanen, Jami; Rinkkala, Paavo; Tuhkanen, Samuel; Tuononen, Ari; Virtanen, Juho-Pekka
Contributor: University of Helsinki, Cognitive Science
University of Helsinki, Cognitive Science
University of Helsinki, Department of Digital Humanities
University of Helsinki, TRU (Traffic Research Unit)
Date: 2020-03-06
Language: eng
Number of pages: 14
Belongs to series: Scientific Reports
ISSN: 2045-2322
URI: http://hdl.handle.net/10138/313856
Abstract: It is well-established how visual stimuli and self-motion in laboratory conditions reliably elicit retinal image stabilizing compensatory eye movements (CEM). Their organization and roles in natural-task gaze strategies is much less understood: are CEM applied in active sampling of visual information in human locomotion in the wild? If so, how? And what are the implications for guidance? Here, we directly compare gaze behavior in the real world (driving a car) and a fixed base simulation steering task. A strong and quantifiable correspondence between self-rotation and CEM counter-rotation is found across a range of speeds. This gaze behavior is “optokinetic”, i.e. optic flow is a sufficient stimulus to spontaneously elicit it in naïve subjects and vestibular stimulation or stereopsis are not critical. Theoretically, the observed nystagmus behavior is consistent with tracking waypoints on the future path, and predicted by waypoint models of locomotor control - but inconsistent with travel point models, such as the popular tangent point model.
Subject: 6162 Cognitive science
VISUAL STABILIZATION
MECHANISMS
HEAD
DIRECTION
VISION
SPEED
GAZE
FLOW
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