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J Neurophysiol 83: 625-629, 2000;
0022-3077/00 $5.00
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The Journal of Neurophysiology Vol. 83 No. 1 January 2000, pp. 625-629
Copyright ©2000 by the American Physiological Society

Disparity Sensitivity of Frontal Eye Field Neurons

Stefano Ferraina, Martin Paré, and Robert H. Wurtz

Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland 20892

Ferraina, Stefano, Martin Paré, and Robert H. Wurtz. Disparity Sensitivity of Frontal Eye Field Neurons. J. Neurophysiol. 83: 625-629, 2000. Information about depth is necessary to generate saccades to visual stimuli located in three-dimensional space. To determine whether monkey frontal eye field (FEF) neurons play a role in the visuo-motor processes underlying this behavior, we studied their visual responses to stimuli at different disparities. Disparity sensitivity was tested from 3° of crossed disparity (near) to 3° degrees of uncrossed disparity (far). The responses of about two thirds of FEF visual and visuo-movement neurons were sensitive to disparity and showed a broad tuning in depth for near or far disparities. Early phasic and late tonic visual responses often displayed different disparity sensitivity. These findings provide evidence of depth-related signals in FEF and suggest a role for FEF in the control of disconjugate as well as conjugate eye movements.




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