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Updated: Aug 12, 2026

Using Saccadometry with Deep Brain Stimulation to Study Normal and Pathological Brain Function
Published on: July 14, 2016
Bidirectional control of saccadic eye movements by the disconnected cerebral hemispheres
H C Hughes1, P A Reuter-Lorenz, R Fendrich
1Department of Psychology, Dartmouth College, Hanover, NH.
Abstract:
The present investigation demonstrates that callosotomy patient J.W. can generate either leftward or rightward saccades in response to color cues presented unilaterally. When asked to name the colors, performance was at chance for left visual field presentations, demonstrating a disability in interhemispheric transfer of chromatic information. The successful control of saccadic direction based on discriminative color cues that appear confined to a single hemisphere may suggest a capacity for bidirectional control of saccadic eye movements in the disconnected cerebral hemispheres.
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