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


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

Download

Full text not available from this repository.

Description/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.

Item Type: Article
ISSNs: 0950-222X (print)
0078-5334 (electronic)
Related URLs:
Subjects: R Medicine > R Medicine (General)
Divisions: Faculty of Medicine
ePrint ID: 341074
Date Deposited: 12 Jul 2012 14:02
Last Modified: 27 Mar 2014 20:23
URI: http://eprints.soton.ac.uk/id/eprint/341074

Actions (login required)

View Item View Item