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  Dorsal and ventral pathways for prosody

Sammler, D., Grosbras, M.-H., Anwander, A., Bestelmeyer, P. E. G., & Belin, P. (2015). Dorsal and ventral pathways for prosody. Current Biology, 25(23), 3079-3085. doi:10.1016/j.cub.2015.10.009.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-F1D7-E Version Permalink: http://hdl.handle.net/21.11116/0000-0003-797A-D
Genre: Journal Article

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 Creators:
Sammler, Daniela1, 2, Author              
Grosbras, Marie-Hélène2, 3, Author
Anwander, Alfred4, Author              
Bestelmeyer, Patricia E. G.5, Author
Belin, Pascal2, 6, 7, Author
Affiliations:
1Otto Hahn Group Neural Bases of Intonation in Speech, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_1797284              
2Institute of Neuroscience and Psychology, University of Glasgow, United Kingdom, ou_persistent22              
3Laboratoire de Neurosciences Cognitives, Aix-Marseille Université, Marseille, France, ou_persistent22              
4Department Neuropsychology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634551              
5School of Psychology, Bangor University, United Kingdom, ou_persistent22              
6Institut des Neurosciences de la Timone, Aix-Marseille Université, Marseille, France, ou_persistent22              
7Laboratories for Brain, Music and Sound, McGill University, Montréal, QC, Canada, ou_persistent22              

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Free keywords: Prosody; Language; Dual pathway model; Fiber tracts; Larynx; Motor simulation; Right-hemispheric lateralization; fMRI; TMS; DWI
 Abstract: Our vocal tone—the prosody—contributes a lot to the meaning of speech beyond the actual words. Indeed, the hesitant tone of a “yes” may be more telling than its affirmative lexical meaning [1]. The human brain contains dorsal and ventral processing streams in the left hemisphere that underlie core linguistic abilities such as phonology, syntax, and semantics [2, 3 and 4]. Whether or not prosody—a reportedly right-hemispheric faculty [5 and 6]—involves analogous processing streams is a matter of debate. Functional connectivity studies on prosody leave no doubt about the existence of such streams [7 and 8], but opinions diverge on whether information travels along dorsal [9] or ventral [10 and 11] pathways. Here we show, with a novel paradigm using audio morphing combined with multimodal neuroimaging and brain stimulation, that prosody perception takes dual routes along dorsal and ventral pathways in the right hemisphere. In experiment 1, categorization of speech stimuli that gradually varied in their prosodic pitch contour (between statement and question) involved (1) an auditory ventral pathway along the superior temporal lobe and (2) auditory-motor dorsal pathways connecting posterior temporal and inferior frontal/premotor areas. In experiment 2, inhibitory stimulation of right premotor cortex as a key node of the dorsal stream decreased participants’ performance in prosody categorization, arguing for a motor involvement in prosody perception. These data draw a dual-stream picture of prosodic processing that parallels the established left-hemispheric multi-stream architecture of language, but with relative rightward asymmetry.

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Language(s): eng - English
 Dates: 2014-12-202015-10-052015-11-052015-12-07
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.cub.2015.10.009
PMID: 26549262
Other: Epub 2015
 Degree: -

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Title: Current Biology
  Other : Curr. Biol.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 25 (23) Sequence Number: - Start / End Page: 3079 - 3085 Identifier: ISSN: 0960-9822
CoNE: /journals/resource/954925579107