Pursuit eye-movements in curve driving differentiate between future path and tangent point models.

For nearly 20 years, looking at the tangent point on the road edge has been prominent in models of visual orientation in curve driving. It is the most common interpretation of the commonly observed pattern of car drivers looking through a bend, or at the apex of the curve. Indeed, in the visual scie...

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Main Authors: Otto Lappi, Jami Pekkanen, Teemu H Itkonen
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC3718775?pdf=render
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author Otto Lappi
Jami Pekkanen
Teemu H Itkonen
author_facet Otto Lappi
Jami Pekkanen
Teemu H Itkonen
author_sort Otto Lappi
collection DOAJ
description For nearly 20 years, looking at the tangent point on the road edge has been prominent in models of visual orientation in curve driving. It is the most common interpretation of the commonly observed pattern of car drivers looking through a bend, or at the apex of the curve. Indeed, in the visual science literature, visual orientation towards the inside of a bend has become known as "tangent point orientation". Yet, it remains to be empirically established whether it is the tangent point the drivers are looking at, or whether some other reference point on the road surface, or several reference points, are being targeted in addition to, or instead of, the tangent point. Recently discovered optokinetic pursuit eye-movements during curve driving can provide complementary evidence over and above traditional gaze-position measures. This paper presents the first detailed quantitative analysis of pursuit eye movements elicited by curvilinear optic flow in real driving. The data implicates the far zone beyond the tangent point as an important gaze target area during steady-state cornering. This is in line with the future path steering models, but difficult to reconcile with any pure tangent point steering model. We conclude that the tangent point steering models do not provide a general explanation of eye movement and steering during a curve driving sequence and cannot be considered uncritically as the default interpretation when the gaze position distribution is observed to be situated in the region of the curve apex.
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spelling doaj.art-1f70c1bfcc7c426cb25f590be642c0402022-12-21T23:41:12ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0187e6832610.1371/journal.pone.0068326Pursuit eye-movements in curve driving differentiate between future path and tangent point models.Otto LappiJami PekkanenTeemu H ItkonenFor nearly 20 years, looking at the tangent point on the road edge has been prominent in models of visual orientation in curve driving. It is the most common interpretation of the commonly observed pattern of car drivers looking through a bend, or at the apex of the curve. Indeed, in the visual science literature, visual orientation towards the inside of a bend has become known as "tangent point orientation". Yet, it remains to be empirically established whether it is the tangent point the drivers are looking at, or whether some other reference point on the road surface, or several reference points, are being targeted in addition to, or instead of, the tangent point. Recently discovered optokinetic pursuit eye-movements during curve driving can provide complementary evidence over and above traditional gaze-position measures. This paper presents the first detailed quantitative analysis of pursuit eye movements elicited by curvilinear optic flow in real driving. The data implicates the far zone beyond the tangent point as an important gaze target area during steady-state cornering. This is in line with the future path steering models, but difficult to reconcile with any pure tangent point steering model. We conclude that the tangent point steering models do not provide a general explanation of eye movement and steering during a curve driving sequence and cannot be considered uncritically as the default interpretation when the gaze position distribution is observed to be situated in the region of the curve apex.http://europepmc.org/articles/PMC3718775?pdf=render
spellingShingle Otto Lappi
Jami Pekkanen
Teemu H Itkonen
Pursuit eye-movements in curve driving differentiate between future path and tangent point models.
PLoS ONE
title Pursuit eye-movements in curve driving differentiate between future path and tangent point models.
title_full Pursuit eye-movements in curve driving differentiate between future path and tangent point models.
title_fullStr Pursuit eye-movements in curve driving differentiate between future path and tangent point models.
title_full_unstemmed Pursuit eye-movements in curve driving differentiate between future path and tangent point models.
title_short Pursuit eye-movements in curve driving differentiate between future path and tangent point models.
title_sort pursuit eye movements in curve driving differentiate between future path and tangent point models
url http://europepmc.org/articles/PMC3718775?pdf=render
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