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Functional Specialization in Rhesus Monkey Auditory Cortex

Science  13 Apr 2001:
Vol. 292, Issue 5515, pp. 290-293
DOI: 10.1126/science.1058911

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Abstract

Neurons in the lateral belt areas of rhesus monkey auditory cortex prefer complex sounds to pure tones, but functional specializations of these multiple maps in the superior temporal region have not been determined. We tested the specificity of neurons in the lateral belt with species-specific communication calls presented at different azimuth positions. We found that neurons in the anterior belt are more selective for the type of call, whereas neurons in the caudal belt consistently show the greatest spatial selectivity. These results suggest that cortical processing of auditory spatial and pattern information is performed in specialized streams rather than one homogeneously distributed system.

  • * To whom correspondence should be addressed. E-mail: rauschej{at}georgetown.edu

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