Orthogonal representation of sound dimensions in the primate midbrain.
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ABSTRACT:
SUBMITTER: Baumann S
PROVIDER: S-EPMC3068195 | biostudies-literature | 2011 Apr
REPOSITORIES: biostudies-literature
Publications
Orthogonal representation of sound dimensions in the primate midbrain.
Baumann Simon S Griffiths Timothy D TD Sun Li L Petkov Christopher I CI Thiele Alexander A Rees Adrian A
Nature neuroscience 20110306 4
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 spe ...[more]
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