The ventral visual stream is proposed to support perception, and the dorsal stream is proposed to control action. A new study of patients with posterior parietal damage shows that the dorsal stream also contributes to automatic obstacle avoidance in reaching.
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Humphreys, G., Edwards, M. Automatic obstacle avoidance and parietal cortex. Nat Neurosci 7, 693 (2004). https://doi.org/10.1038/nn0704-693
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DOI: https://doi.org/10.1038/nn0704-693
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