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Modulating the granularity of category formation by global cortical states
2008
Frontiers in Computational Neuroscience
The unsupervised categorization of sensory stimuli is typically attributed to feedforward processing in a hierarchy of cortical areas. This purely sensory-driven view of cortical processing, however, ignores any internal modulation, e.g., by top-down attentional signals or neuromodulator release. To isolate the role of internal signaling on category formation, we consider an unbroken continuum of stimuli without intrinsic category boundaries. We show that a competitive network, shaped by
doi:10.3389/neuro.10.001.2008
pmid:18946531
pmcid:PMC2525940
fatcat:7q6boz72v5csdftkgzy6ayozsy