Humans use Optokinetic Eye Movements to Track Waypoints for Steering

Otto Lappi*, Jami Pekkanen, Paavo Rinkkala, Samuel Tuhkanen, Ari Tuononen, Juho Pekka Virtanen

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

24 Lataukset (Pure)

Abstrakti

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.

AlkuperäiskieliEnglanti
Artikkeli4175
JulkaisuScientific Reports
Vuosikerta10
Numero1
DOI - pysyväislinkit
TilaJulkaistu - 1 joulukuuta 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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