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

Nat Neurosci. 2019 Jul;22(7):1057-1060. doi: 10.1038/s41593-019-0410-7. Epub 2019 Jun 10.

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.

Publication types

  • Comparative Study
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acoustic Stimulation
  • Adult
  • Animals
  • Auditory Cortex / anatomy & histology
  • Auditory Cortex / physiology*
  • Brain Mapping
  • Female
  • Humans
  • Macaca mulatta
  • Magnetic Resonance Imaging
  • Male
  • Music
  • Pitch Perception / physiology*
  • Species Specificity
  • Speech Perception / physiology*
  • Vocalization, Animal