@article {317249,
	title = {Neural Correlates of Vocal Repertoire in Primates},
	journal = {Frontiers in Neuroscience},
	volume = {12},
	year = {2018},
	pages = {534},
	abstract = {<p>Understanding 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</p>
},
	issn = {1662-453X},
	doi = {10.3389/fnins.2018.00534},
	url = {https://www.frontiersin.org/article/10.3389/fnins.2018.00534},
	author = {Dunn, Jacob C. and Smaers, Jeroen B.}
}
