Supplementary eye field: influence of eye position on neural signals of fixation.
Single units were recorded in the supplementary eye field of monkeys performing visual-oculomotor tasks. Two patterns of unit activity were observed while the animals fixated photic stimuli. One consisted of a step in tonic firing frequency (either an increase or a decrease, depending on the cell), lasting as long as fixation. The occurrence of this pattern did not require the continuous presence of a stimulus but the animal had to be provided with an incentive to fixate a given location. The other pattern was a monotonically varying firing rate dependent on the eye orientation along a particular axis, indicative of eye eccentricity in orbit.
Schlag
J
J
Department of Anatomy, UCLA 90024-1763.
Schlag-Rey
M
M
Pigarev
I
I
D000818:Animals; D005133:Eye Movements / Q000502:physiology*; D008254:Macaca nemestrina; D009474:Neurons / Q000502:physiology*; D009801:Oculomotor Muscles / Q000294:innervation; D009915:Orbit / Q000502:physiology; D010775:Photic Stimulation; D014794:Visual Fields / Q000502:physiology*