The effect of electromagnetic stimulation of the posterior parietal cortex on eye movements
The effect of electromagnetic stimulation of the posterior parietal cortex on eye movements
The posterior parietal cortex probably plays a central role in the sensorimotor transformations needed to make an accurate saccadic eye movement to a visual target. In an attempt to disrupt the normal programming of saccades, we magnetically stimulated the posterior parietal cortex in human volunteers, 80 ms after a small target moved 5 degrees horizontally from the centre of a VDU screen. Saccadic eye movements were recorded and experimental trials were compared with control, unstimulated trials. Magnetic stimulation was triggered in 70% of the trials selected randomly. The main effects of stimulation were: increased divergence of the eyes before each saccade, greater latency of saccade onset, and a tendency to undershoot the target. These results support the hypothesis that the posterior parietal cortex is involved in the programming of accurate saccades to visual targets.
510-514
Elkington, P.T.
60828c7c-3d32-47c9-9fcc-6c4c54c35a15
Kerr, G.K.
9d0f2b46-8550-4a8b-8bd4-425f6f41dd87
Stein, J.S.
bd91e79b-632f-440f-a2d9-508108d0f1e1
1992
Elkington, P.T.
60828c7c-3d32-47c9-9fcc-6c4c54c35a15
Kerr, G.K.
9d0f2b46-8550-4a8b-8bd4-425f6f41dd87
Stein, J.S.
bd91e79b-632f-440f-a2d9-508108d0f1e1
Elkington, P.T., Kerr, G.K. and Stein, J.S.
(1992)
The effect of electromagnetic stimulation of the posterior parietal cortex on eye movements.
Eye, 6, part 5, .
(doi:10.1038/eye.1992.108).
(PMID:1286717)
Abstract
The posterior parietal cortex probably plays a central role in the sensorimotor transformations needed to make an accurate saccadic eye movement to a visual target. In an attempt to disrupt the normal programming of saccades, we magnetically stimulated the posterior parietal cortex in human volunteers, 80 ms after a small target moved 5 degrees horizontally from the centre of a VDU screen. Saccadic eye movements were recorded and experimental trials were compared with control, unstimulated trials. Magnetic stimulation was triggered in 70% of the trials selected randomly. The main effects of stimulation were: increased divergence of the eyes before each saccade, greater latency of saccade onset, and a tendency to undershoot the target. These results support the hypothesis that the posterior parietal cortex is involved in the programming of accurate saccades to visual targets.
This record has no associated files available for download.
More information
Published date: 1992
Organisations:
Faculty of Medicine
Identifiers
Local EPrints ID: 341074
URI: http://eprints.soton.ac.uk/id/eprint/341074
ISSN: 0950-222X
PURE UUID: 3fa6e903-0c07-4ae8-b4c4-e3c68f8e8aea
Catalogue record
Date deposited: 12 Jul 2012 14:02
Last modified: 15 Mar 2024 03:43
Export record
Altmetrics
Contributors
Author:
G.K. Kerr
Author:
J.S. Stein
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
Loading...
View more statistics