The auditory cortex |
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Authors: | G Ehret |
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Institution: | Abteilung Vergleichende Neurobiologie, Universit?t Ulm, D-89069 Ulm, Germany, Fax: +49-731 5022629 e-mail: guenter.ehret@biologie.uni-ulm.de, DE
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Abstract: | The division of the auditory cortex into various fields, functional aspects of these fields, and neuronal coding in the primary
auditory cortical field (AI) are reviewed with stress on features that may be common to mammals. On the basis of 14 topographies
and clustered distributions of neuronal response characteristics in the primary auditory cortical field, a hypothesis is developed
of how a certain complex acoustic pattern may be encoded in an equivalent spatial activity pattern in AI, generated by time-coordinated
firing of groups of neurons. The auditory cortex, demonstrated specifically for AI, appears to perform sound analysis by synthesis,
i.e. by combining spatially distributed coincident or time-coordinated neuronal responses. The dynamics of sounds and the
plasticity of cortical responses are considered as a topic for research.
Accepted: 25 July 1997 |
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Keywords: | Auditory cortex Brain mapping Coincidence coding Sound-pattern representation Topographical coding |
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