Speech rhythms and multiplexed oscillatory sensory coding in the human brain
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Speech rhythms and multiplexed oscillatory sensory coding in the human brain. / Gross, Joachim; Hoogenboom, Nienke; Thut, Gregor; Schyns, Philippe; Panzeri, Stefano; Belin, Pascal; Garrod, Simon.
In: PLOS BIOL, Vol. 11, No. 12, 12.2013, p. e1001752.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Speech rhythms and multiplexed oscillatory sensory coding in the human brain
AU - Gross, Joachim
AU - Hoogenboom, Nienke
AU - Thut, Gregor
AU - Schyns, Philippe
AU - Panzeri, Stefano
AU - Belin, Pascal
AU - Garrod, Simon
PY - 2013/12
Y1 - 2013/12
N2 - Cortical oscillations are likely candidates for segmentation and coding of continuous speech. Here, we monitored continuous speech processing with magnetoencephalography (MEG) to unravel the principles of speech segmentation and coding. We demonstrate that speech entrains the phase of low-frequency (delta, theta) and the amplitude of high-frequency (gamma) oscillations in the auditory cortex. Phase entrainment is stronger in the right and amplitude entrainment is stronger in the left auditory cortex. Furthermore, edges in the speech envelope phase reset auditory cortex oscillations thereby enhancing their entrainment to speech. This mechanism adapts to the changing physical features of the speech envelope and enables efficient, stimulus-specific speech sampling. Finally, we show that within the auditory cortex, coupling between delta, theta, and gamma oscillations increases following speech edges. Importantly, all couplings (i.e., brain-speech and also within the cortex) attenuate for backward-presented speech, suggesting top-down control. We conclude that segmentation and coding of speech relies on a nested hierarchy of entrained cortical oscillations.
AB - Cortical oscillations are likely candidates for segmentation and coding of continuous speech. Here, we monitored continuous speech processing with magnetoencephalography (MEG) to unravel the principles of speech segmentation and coding. We demonstrate that speech entrains the phase of low-frequency (delta, theta) and the amplitude of high-frequency (gamma) oscillations in the auditory cortex. Phase entrainment is stronger in the right and amplitude entrainment is stronger in the left auditory cortex. Furthermore, edges in the speech envelope phase reset auditory cortex oscillations thereby enhancing their entrainment to speech. This mechanism adapts to the changing physical features of the speech envelope and enables efficient, stimulus-specific speech sampling. Finally, we show that within the auditory cortex, coupling between delta, theta, and gamma oscillations increases following speech edges. Importantly, all couplings (i.e., brain-speech and also within the cortex) attenuate for backward-presented speech, suggesting top-down control. We conclude that segmentation and coding of speech relies on a nested hierarchy of entrained cortical oscillations.
KW - Adult
KW - Auditory Cortex/physiology
KW - Brain/physiology
KW - Female
KW - Functional Laterality/physiology
KW - Functional Neuroimaging
KW - Humans
KW - Magnetic Resonance Imaging
KW - Magnetoencephalography
KW - Male
KW - Speech/physiology
KW - Speech Perception/physiology
KW - Young Adult
U2 - 10.1371/journal.pbio.1001752
DO - 10.1371/journal.pbio.1001752
M3 - SCORING: Journal article
C2 - 24391472
VL - 11
SP - e1001752
JO - PLOS BIOL
JF - PLOS BIOL
SN - 1544-9173
IS - 12
ER -
