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Divergence in the functional organization of human and macaque auditory cortex revealed by fMRI responses to harmonic tones.

ABSTRACT: We report a difference between humans and macaque monkeys in the functional organization of cortical regions implicated in pitch perception. Humans but not macaques showed regions with a strong preference for harmonic sounds compared to noise, measured with both synthetic tones and macaque vocalizations. In contrast, frequency-selective tonotopic maps were similar between the two species. This species difference may be driven by the unique demands of speech and music perception in humans.

SUBMITTER: Norman-Haignere SV

PROVIDER: S-EPMC6592717 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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Divergence in the functional organization of human and macaque auditory cortex revealed by fMRI responses to harmonic tones.

Norman-Haignere Sam V SV Kanwisher Nancy N McDermott Josh H JH Conway Bevil R BR

Nature neuroscience 20190610 7

We report a difference between humans and macaque monkeys in the functional organization of cortical regions implicated in pitch perception. Humans but not macaques showed regions with a strong preference for harmonic sounds compared to noise, measured with both synthetic tones and macaque vocalizations. In contrast, frequency-selective tonotopic maps were similar between the two species. This species difference may be driven by the unique demands of speech and music perception in humans. ...[more]

PMID: 31182868

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