Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSouto, D-
dc.contributor.authorChudasama, J-
dc.contributor.authorKerzel, D-
dc.contributor.authorJohnston, A-
dc.identifier.citationJournal of Neurophysiology, 2019en
dc.descriptionThe file associated with this record is under embargo until 12 months after publication, in accordance with the publisher's self-archiving policy. The full text may be available through the publisher links provided above.en
dc.description.abstractSmooth pursuit eye movements (pursuit) are used to minimize the retinal motion of moving objects. During pursuit, the pattern of motion on the retina carries not only information about the object movement, but also re-afferent information about the eye movement itself. The latter arises from the retinal flow of the stationary world in the direction opposite to the eye movement. To extract the global direction of motion of the tracked object and stationary world, the visual system needs to integrate ambiguous local motion measurements (i.e., the aperture problem). Unlike the tracked object, the stationary world's global motion is entirely determined by the eye movement and thus can be approximately derived from motor commands sent to the eye (i.e., from an efference copy). Because retinal motion opposite to the eye movement is dominant during pursuit, different motion integration mechanisms might be used for retinal motion in the same direction and opposite to pursuit. To investigate motion integration during pursuit, we tested direction discrimination of a brief change in global object motion. The global motion stimulus was a circular array of small static apertures within which one-dimensional gratings moved. We found increased coherence thresholds and a qualitatively different reflexive ocular tracking for global motion opposite to pursuit. Both effects suggest reduced sampling of motion opposite to pursuit, which results in an impaired ability to extract coherence in motion signals in the re-afferent direction. We suggest that anisotropic motion integration is an adaptation to asymmetric retinal motion patterns experienced during pursuit eye movements.en
dc.description.sponsorshipThis study was partially supported by FNRS fund 100014135374 (DK, DS). AJ was supported by EPSRC grant EP/M026965/1.en
dc.publisherAmerican Physiological Societyen
dc.rightsCopyright © 2019, American Physiological Society. Deposited with reference to the publisher’s open access archiving policy. (
dc.subjectmotion perceptionen
dc.subjectocular followingen
dc.subjectperceptual integrationen
dc.subjectsmooth pursuit eye movementsen
dc.titleMotion integration is anisotropic during smooth pursuit eye movements.en
dc.typeJournal Articleen
dc.type.subtypeJournal Article-
pubs.organisational-group/Organisation/COLLEGE OF LIFE SCIENCESen
pubs.organisational-group/Organisation/COLLEGE OF LIFE SCIENCES/Biological Sciencesen
pubs.organisational-group/Organisation/COLLEGE OF LIFE SCIENCES/Biological Sciences/Neuroscience, Psychology and Behaviouren
Appears in Collections:Published Articles, Dept. of Neuroscience, Psychology and Behaviour

Files in This Item:
File Description SizeFormat 
souto.chudasama.kerzel.johnston.2019.in_press.pdfPost-review (final submitted author manuscript)1.67 MBAdobe PDFView/Open

Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.