Abstract
The cortical anatomical substrates by which visual information may influence the frontal areas controlling reaching movements to visual targets were studied in monkeys. A reaching task was employed to characterize the arm-related regions of the frontal lobe. Injections of retrograde tracers into these physiologically defined cortical fields revealed a gradient of parallel corticocortical pathways originating in the superior parietal lobule and impinging upon different frontal regions. These results support the hypothesis that the superior parietal lobule can supply the frontal motor and premotor areas not only with the proprioceptive information but also with the visual input required for the control of reaching.
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Johnson, P.B., Ferraina, S. & Caminiti, R. Cortical networks for visual reaching. Exp Brain Res 97, 361–365 (1993). https://doi.org/10.1007/BF00228707
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DOI: https://doi.org/10.1007/BF00228707