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      Rapid task-related plasticity of spectrotemporal receptive fields in primary auditory cortex.

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          Abstract

          We investigated the hypothesis that task performance can rapidly and adaptively reshape cortical receptive field properties in accord with specific task demands and salient sensory cues. We recorded neuronal responses in the primary auditory cortex of behaving ferrets that were trained to detect a target tone of any frequency. Cortical plasticity was quantified by measuring focal changes in each cell's spectrotemporal response field (STRF) in a series of passive and active behavioral conditions. STRF measurements were made simultaneously with task performance, providing multiple snapshots of the dynamic STRF during ongoing behavior. Attending to a specific target frequency during the detection task consistently induced localized facilitative changes in STRF shape, which were swift in onset. Such modulatory changes may enhance overall cortical responsiveness to the target tone and increase the likelihood of 'capturing' the attended target during the detection task. Some receptive field changes persisted for hours after the task was over and hence may contribute to long-term sensory memory.

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          Author and article information

          Journal
          Nat Neurosci
          Nature neuroscience
          Springer Science and Business Media LLC
          1097-6256
          1097-6256
          Nov 2003
          : 6
          : 11
          Affiliations
          [1 ] Center for Auditory and Acoustic Research, Institute for Systems Research, Electrical and Computer Engineering, University of Maryland, College Park, Maryland 20742, USA. ripple@isr.umd.edu
          Article
          nn1141
          10.1038/nn1141
          14583754
          2fc56748-329d-4e14-87f7-1c4f3566e99a
          History

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