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The effect of electromagnetic stimulation of the posterior parietal cortex on eye movements

Record type: Article

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.

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Citation

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, pp. 510-514. (doi:10.1038/eye.1992.108). (PMID:1286717).

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
ORCID for P.T. Elkington: ORCID iD orcid.org/0000-0003-0390-0613

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Date deposited: 12 Jul 2012 14:02
Last modified: 18 Jul 2017 05:39

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Contributors

Author: P.T. Elkington ORCID iD
Author: G.K. Kerr
Author: J.S. Stein

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