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Adaptation of torsional eye alignment in relation to smooth pursuit and saccades

Record type: Article

The long-term fusion of vertical or horizontal disparities by vergence eye movements is known to evoke persistent changes in vertical and horizontal eye alignment. Adaptive changes in response to torsional disparities have not been well studied. Torsional eye position was measured binocularly with a video system before and after 90 min training periods in which subjects attempted to fuse cyclodisparities. Subjects trained with either a single cyclodisparity presented at a single vertical eye position or with cyclodisparities that varied smoothly from an incyclodisparity to an excyclodisparity as a function of either vertical or horizontal eye position. All five subjects showed persistent changes in binocular torsional eye alignment following both types of training. Incyclodisparities were more easily fused during training and the training aftereffect was greater in that direction. The training aftereffect was observed in relation to both saccades and smooth pursuit under both open-loop and closed-loop viewing conditions. During saccades, the dynamics of the cyclovergence training aftereffect more closely resembled the dynamics of cyclofusional movements than the dynamics of the saccades with which they were associated

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Citation

Maxwell, James S., Graf, Erich W. and Schor, Clifton M. (2001) Adaptation of torsional eye alignment in relation to smooth pursuit and saccades Vision Research, 41, (27), pp. 3735-3749. (doi:10.1016/S0042-6989(01)00215-2).

More information

Published date: December 2001
Keywords: cyclovergence, cyclophoria, Listing's law

Identifiers

Local EPrints ID: 47991
URI: http://eprints.soton.ac.uk/id/eprint/47991
ISSN: 0042-6989
PURE UUID: 24c410c0-c721-40f7-95cc-35ae669beefb
ORCID for Erich W. Graf: ORCID iD orcid.org/0000-0002-3162-4233

Catalogue record

Date deposited: 16 Aug 2007
Last modified: 17 Jul 2017 15:01

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Contributors

Author: James S. Maxwell
Author: Erich W. Graf ORCID iD
Author: Clifton M. Schor

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