Neurophysiological Constraints on the Eye-Mind Link

Several current computational models of eye-movement control in reading posit a tight link between the eye and mind, with lexical processing directly triggering most decisions about when to start programming a saccade to move the eyes from one word to the next. One potential problem with this theor...

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Main Authors: Erik Daniel Reichle, Eyal M. Reingold
Format: Article
Language:English
Published: Frontiers Media S.A. 2013-07-01
Series:Frontiers in Human Neuroscience
Subjects:
Online Access:http://journal.frontiersin.org/Journal/10.3389/fnhum.2013.00361/full
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author Erik Daniel Reichle
Eyal M. Reingold
author_facet Erik Daniel Reichle
Eyal M. Reingold
author_sort Erik Daniel Reichle
collection DOAJ
description Several current computational models of eye-movement control in reading posit a tight link between the eye and mind, with lexical processing directly triggering most decisions about when to start programming a saccade to move the eyes from one word to the next. One potential problem with this theoretical assumption, however, is that it may violate neurophysiological constraints imposed by the time required to encode visual information, complete some amount of lexical processing, and then program a saccade. In this article, we review what has been learned about these timing constraints from studies using ERP and MEG. On the basis of this review, it would appear that the temporal constraints are too severe to permit direct lexical control of eye movements without a significant amount of parafoveal processing (i.e., pre-processing of word n+1 from word n). This conclusion underscores the degree to which the perceptual, cognitive, and motor processes involved in reading must be highly coordinated to support skilled reading, a par excellence example of a task requiring visual-cognitive expertise.
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spelling doaj.art-ac898cb7d1c74f2d9e044936c12469892022-12-21T21:07:29ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612013-07-01710.3389/fnhum.2013.0036155148Neurophysiological Constraints on the Eye-Mind LinkErik Daniel Reichle0Eyal M. Reingold1University of SouthamptonUniversity of Toronto, MississaugaSeveral current computational models of eye-movement control in reading posit a tight link between the eye and mind, with lexical processing directly triggering most decisions about when to start programming a saccade to move the eyes from one word to the next. One potential problem with this theoretical assumption, however, is that it may violate neurophysiological constraints imposed by the time required to encode visual information, complete some amount of lexical processing, and then program a saccade. In this article, we review what has been learned about these timing constraints from studies using ERP and MEG. On the basis of this review, it would appear that the temporal constraints are too severe to permit direct lexical control of eye movements without a significant amount of parafoveal processing (i.e., pre-processing of word n+1 from word n). This conclusion underscores the degree to which the perceptual, cognitive, and motor processes involved in reading must be highly coordinated to support skilled reading, a par excellence example of a task requiring visual-cognitive expertise.http://journal.frontiersin.org/Journal/10.3389/fnhum.2013.00361/fullSaccadesMEGComputational modelsreadingERP
spellingShingle Erik Daniel Reichle
Eyal M. Reingold
Neurophysiological Constraints on the Eye-Mind Link
Frontiers in Human Neuroscience
Saccades
MEG
Computational models
reading
ERP
title Neurophysiological Constraints on the Eye-Mind Link
title_full Neurophysiological Constraints on the Eye-Mind Link
title_fullStr Neurophysiological Constraints on the Eye-Mind Link
title_full_unstemmed Neurophysiological Constraints on the Eye-Mind Link
title_short Neurophysiological Constraints on the Eye-Mind Link
title_sort neurophysiological constraints on the eye mind link
topic Saccades
MEG
Computational models
reading
ERP
url http://journal.frontiersin.org/Journal/10.3389/fnhum.2013.00361/full
work_keys_str_mv AT erikdanielreichle neurophysiologicalconstraintsontheeyemindlink
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