Abstract
Horizontal binocular eye and head movements of 4 human subjects were recorded by means of the sensor coil-rotating magnetic field technique while they actively rotated their heads about a vertical axis and maintained fixation on a distant target. The frequency and peak-to-peak amplitude of these rotations ranged from about 0.25 Hz to 5 Hz and 30° to 15′. Eye movement compensation of such head rotations was far from perfect and compensation was different in each eye. Average retinal image speed was on the order of 4 deg/sec within each eye and the speed of the changes in retinal image position between the eyes was on the order of 3 deg/sec. Vision, subjectively, remained fused, stable and clear. Attention is called to implications of these results for visual and oculomotor physiology.
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