Anatomo-functional correspondence in the superior temporal sulcus

Bodin, C., Takerkart, S., Belin, P. and Coulon, O. (2018) Anatomo-functional correspondence in the superior temporal sulcus. Brain Structure and Function, 223(1), pp. 221-232. (doi: 10.1007/s00429-017-1483-2) (PMID:28756487)

Abstract

The superior temporal sulcus (STS) is an intriguing region both for its complex anatomy and for the multiple functions that it hosts. Unfortunately, most studies explored either the functional organization or the anatomy of the STS only. Here, we link these two aspects by investigating anatomo-functional correspondences between the voice-sensitive cortex (Temporal Voice Areas) and the STS depth. To do so, anatomical and functional scans of 116 subjects were processed such as to generate individual surface maps on which both depth and functional voice activity can be analyzed. Individual depth profiles of manually drawn STS and functional profiles from a voice localizer (voice > non-voice) maps were extracted and compared to assess anatomo-functional correspondences. Three major results were obtained: first, the STS exhibits a highly significant rightward depth asymmetry in its middle part. Second, there is an anatomo-functional correspondence between the location of the voice-sensitive peak and the deepest point inside this asymmetrical region bilaterally. Finally, we showed that this correspondence was independent of the gender and, using a machine learning approach, that it existed at the individual level. These findings offer new perspectives for the understanding of anatomo-functional correspondences in this complex cortical region.

• Item Type: Articles
• Keywords: Anatomo-functional, STS, sulcal depth, temporal voice areas.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Belin, Professor Pascal
• Authors: Bodin, C., Takerkart, S., Belin, P., and Coulon, O.
• College/School: College of Medical Veterinary and Life Sciences > School of Psychology & Neuroscience
• Journal Name: Brain Structure and Function
• Publisher: Springer
• ISSN: 1863-2653
• ISSN (Online): 1863-2661
• Published Online: 29 July 2017
• Copyright Holders: Copyright © 2017 Springer-Verlag GmbH
• First Published: First published in Brain Structure and Function 223(1): 221-232
• Publisher Policy: Reproduced in accordance with the publisher copyright policy