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Neural Correlates of Vocal Repertoire in Primates
journal contribution
posted on 2023-07-26, 14:24 authored by Jacob C. Dunn, Jeroen B. SmaersUnderstanding the nature of the relationship between vocal complexity and brain architecture across non-human primates may help elucidate some of the key elements underlying the evolution of human speech. Here we report a positive correlation between vocal repertoire size and the relative size of cortical association areas (governing voluntary control over behavioural output) in non-human primates. We further demonstrate that a hominid grade shift in the relative volume of cortical association areas coincides with a similar grade shift in the hypoglossal nucleus (which is associated with the cranial nerve that innervates the muscles of the tongue). Our results support a qualitative continuity in the neural correlates of vocal repertoire, but a quantitative discontinuity in the extent to which the neural system supporting speech is innervated by cortical association areas in great apes and humans.
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Refereed
- Yes
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12Issue number
534Publication title
Frontiers in NeuroscienceISSN
1662-453XExternal DOI
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Frontiers MediaFile version
- Published version
Language
- eng
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Legacy posted date
2018-07-23Legacy creation date
2018-07-23Legacy Faculty/School/Department
ARCHIVED Faculty of Science & Technology (until September 2018)Usage metrics
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