Abstract
This report describes the behavior of neurons in the dorsomedial frontal cortex during smooth pursuit eye movements. Single neurons were recorded from monkeys while they tracked a small target that moved from the center of a screen outward. The firing rate of most cells was modulated during smooth pursuit eye movements, and often the activity peaked around pursuit initiation. Visual motion of the small target with the eyes fixed could activate pursuit neurons, but did not account for the total pursuit response. Neurons were also selective for the direction in which the animal was tracking, indicating that they were linked to the generation of the eye movements, and not to non-specific arousal effects. The results suggest that the dorsomedial frontal cortex participates in initiating smooth pursuit. It is proposed that the dorsomedial frontal cortex is part of a partial alternative path to the classic pursuit pathway that might be used to facilitate the initiation or control of eye movements beyond a simple reflexive response to retinal slip.
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Heinen, S.J. Single neuron activity in the dorsomedial frontal cortex during smooth pursuit eye movements. Exp Brain Res 104, 357–361 (1995). https://doi.org/10.1007/BF00242022
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DOI: https://doi.org/10.1007/BF00242022