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Orthogonal representation of sound dimensions in the primate midbrain

Lookup NU author(s): Dr Simon Baumann, Professor Tim GriffithsORCiD, Dr Li Sun, Professor Christopher Petkov, Professor Alexander Thiele, Professor Adrian ReesORCiD

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Abstract

Natural sounds are characterized by their spectral content and the modulation of energy over time. Using functional magnetic resonance imaging in awake macaques, we observed topographical representations of these spectral and temporal dimensions in a single structure, the inferior colliculus, the principal auditory nucleus in the midbrain. These representations are organized as a map with two approximately perpendicular axes: one representing increasing temporal rate and the other increasing spectral frequency.

Publication metadata

Author(s): Baumann S, Griffiths TD, Sun L, Petkov CI, Thiele A, Rees A

Publication type: Article

Publication status: Published

Journal: Nature Neuroscience

Year: 2011

Volume: 14

Issue: 4

Pages: 423-425

Print publication date: 06/03/2011

ISSN (print): 1097-6256

ISSN (electronic): 1546-1726

Publisher: Nature Publishing Group

URL: http://dx.doi.org/10.1038/nn.2771

DOI: 10.1038/nn.2771

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