dc.contributor.author | Molinaro, Nicola | |
dc.contributor.author | Lizarazu, Mikel | |
dc.date.accessioned | 2018-11-28T15:15:38Z | |
dc.date.available | 2018-11-28T15:15:38Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Molinaro, N. and Lizarazu, M. (2018), Delta(but not theta)‐band cortical entrainment involves speech‐specific processing. Eur J Neurosci, 48: 2642-2650. doi:10.1111/ejn.13811 | es_ES |
dc.identifier.issn | 0953-816X | |
dc.identifier.uri | http://hdl.handle.net/10810/29940 | |
dc.description | First published: 28 December 2017 | es_ES |
dc.description.abstract | Cortical oscillations phase-align to the quasi-rhythmic structure of the speech envelope. This speech-brain entrainment has been reported in two frequency bands, that is both in the theta band (4-8 Hz) and in the delta band (<4 Hz). However, it is not clear if these two phenomena reflect passive synchronization of the auditory cortex to the acoustics of the speech input, or if they reflect higher processes involved in actively parsing speech information. Here, we report two magnetoencephalography experiments in which we contrasted cortical entrainment to natural speech compared to qualitative different control conditions (Experiment 1: amplitude-modulated white-noise; Experiment 2: spectrally rotated speech). We computed the coherence between the oscillatory brain activity and the envelope of the auditory stimuli. At the sensor-level, we observed increased coherence for the delta and the theta band for all conditions in bilateral brain regions. However, only in the delta band (but not theta), speech entrainment was stronger than either of the control auditory inputs. Source reconstruction in the delta band showed that speech, compared to the control conditions, elicited larger coherence in the right superior temporal and left inferior frontal regions. In the theta band, no differential effects were observed for the speech compared to the control conditions. These results suggest that whereas theta entrainment mainly reflects perceptual processing of the auditory signal, delta entrainment involves additional higher-order computations in the service of language processing. | es_ES |
dc.description.sponsorship | This work was partially supported by the Spanish Ministry of Economy and
Competitiveness (MINECO), the Agencia Estatal de Investigaci on (AEI) and
the Fondo Europeo de Desarrollo Regional FEDER) (grant PSI2015-65694-
P, ‘Severo Ochoa’ programme SEV-2015-490 for Centres of Excellence in
R&D), the Basque Government (grant PI_2016_1_0014), the ANR-10-
LABX-0087 IEC and the ANR-10-IDEX-0001-02 PSL*. Further support was
provided by the AThEME project funded by the European Commission 7th
Framework Programme, the ERC-2011-ADG-295362 from the European
Research Council. We would like to thank Margaret Gillon-Dowens and Sara
Guediche for comments on previous versions of this article and Mathieu
Bourguignon for useful advice on the present project. We would like to
thank the whole BCBL research centre for the constant support for our
research. | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | European Journal of Neuroscience | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/PSI2015-65694-P | es_ES |
dc.relation | info:eu-repo/grantAgreement/MINECO/SEV-2015-0490 | es_ES |
dc.relation | info:eu-repo/grantAgreement/ERC2011-ADG-295362 | es_ES |
dc.rights | info:eu-repo/semantics/openAccess | es_ES |
dc.subject | coherence | es_ES |
dc.subject | cortical entrainment | es_ES |
dc.subject | inferior frontal cortex | es_ES |
dc.subject | neuronal oscillations | es_ES |
dc.subject | speech processing | es_ES |
dc.title | Delta(but not theta)-band cortical entrainment involves speech-specific processing | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.holder | © 2017 Federation of European Neuroscience Societies and John Wiley & Sons Ltd | es_ES |
dc.relation.publisherversion | https://onlinelibrary.wiley.com/journal/14609568 | es_ES |
dc.identifier.doi | 10.1111/ejn.13811 | |