The ability to categorize objects depending on task demands is critical. A primate study finds that the prefrontal cortex signals to the parietal cortex during categorization, indicating an asymmetric, top-down interaction.
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Gottlieb, J. Slicing a pie is no piece of cake. Nat Neurosci 16, 1364–1366 (2013). https://doi.org/10.1038/nn.3520
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DOI: https://doi.org/10.1038/nn.3520