Neural mechanism of visuo-motor control independent of self-induced sensory events

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To investigate the neural mechanism that enables us to determine whether the image motion on the retina is genuine or self-induced, we recorded single neurons in the middle temporal (MT) and medial superior temporal (MST) areas in behaving monkeys. We found that MT neurons responded in relation to the retinal image motion, and MST neurons responded in relation to the genuine motion in the external world. The results suggest that MST neurons respond to visual motion in the external world while compensating the retinal image motion due to eye movements.