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Auditory motion-specific mechanisms in the primate brain
Journal article   Open access   Peer reviewed

Auditory motion-specific mechanisms in the primate brain

Colline Poirier, Simon Baumann, Pradeep Dheerendra, Olivier Joly, David Hunter, Fabien Balezeau, Li Sun, Adrian Rees, Christopher I. Petkov, Alexander Thiele, …
PLoS biology, Vol.15(5), pp.e2001379-e2001379
05/01/2017
DOI: 10.1371/journal.pbio.2001379
PMCID: PMC5417421
PMID: 28472038
url
https://doi.org/10.1371/journal.pbio.2001379View
Published (Version of record) Open Access

Abstract

This work examined the mechanisms underlying auditory motion processing in the auditory cortex of awake monkeys using functional magnetic resonance imaging (fMRI). We tested to what extent auditory motion analysis can be explained by the linear combination of static spatial mechanisms, spectrotemporal processes, and their interaction. We found that the posterior auditory cortex, including A1 and the surrounding caudal belt and parabelt, is involved in auditory motion analysis. Static spatial and spectrotemporal processes were able to fully explain motion-induced activation in most parts of the auditory cortex, including A1, but not in circumscribed regions of the posterior belt and parabelt cortex. We show that in these regions motion-specific processes contribute to the activation, providing the first demonstration that auditory motion is not simply deduced from changes in static spatial location. These results demonstrate that parallel mechanisms for motion and static spatial analysis coexist within the auditory dorsal stream.
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