Academic Journal
Low-frequency cortical oscillations entrain to sub-threshold rhythmic auditory stimuli
| العنوان: | Low-frequency cortical oscillations entrain to sub-threshold rhythmic auditory stimuli |
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| المؤلفون: | Ten Oever, Sanne, Schroeder, Charles E, Poeppel, David, van Atteveldt, Nienke, Mehta, Ashesh D, Mégevand, Pierre, Groppe, David M, Zion-Golumbic, Elana |
| المصدر: | Ten Oever , S , Schroeder , C E , Poeppel , D , van Atteveldt , N , Mehta , A D , Mégevand , P , Groppe , D M & Zion-Golumbic , E 2017 , ' Low-frequency cortical oscillations entrain to sub-threshold rhythmic auditory stimuli ' , The Journal of Neuroscience , vol. 37 , no. 19 , pp. 4903-4912 . https://doi.org/10.1523/JNEUROSCI.3658-16.2017 |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Journal Article |
| الوصف: | Many environmental stimuli contain temporal regularities, a feature which can help predict forthcoming input. Phase-locking (entrainment) of ongoing low-frequency neuronal oscillations to rhythmic stimuli is proposed as a potential mechanism for enhancing neuronal responses and perceptual sensitivity, by aligning high-excitability phases to events within a stimulus stream. Previous experiments show that rhythmic structure has a behavioral benefit even when the rhythm itself is below perceptual detection thresholds (Ten Oever et al., 2014). It is not known whether this "inaudible" rhythmic sound stream also induces entrainment. Here we tested this hypothesis using magnetoencephalography (MEG) and electrocorticography (ECoG) in humans to record changes in neuronal activity as subthreshold rhythmic stimuli gradually became audible. We found that significant phase-locking to the rhythmic sounds preceded participants' detection of them. Moreover, no significant auditory-evoked responses accompanied this pre-threshold entrainment. These auditory-evoked responses, distinguished by robust, broad-band increases in inter-trial coherence (ITC), only appeared after sounds were reported as audible. Taken together with the reduced perceptual thresholds observed for rhythmic sequences, these findings support the proposition that entrainment of low-frequency oscillations serves a mechanistic role in enhancing perceptual sensitivity for temporally-predictive sounds. This framework has broad implications for understanding the neural mechanisms involved in generating temporal predictions and their relevance for perception, attention, and awareness.SIGNIFICANCE STATEMENTThe environment is full of rhythmically structured signals that the nervous system can exploit for information processing. Thus it is important to understand how the brain processes such temporally structured, regular features of external stimuli. Here we report the alignment of slowly fluctuating oscillatory brain activity to external rhythmic structure prior to ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| DOI: | 10.1523/JNEUROSCI.3658-16.2017 |
| الاتاحة: | https://research.vu.nl/en/publications/5e6741cb-be4b-498c-88ad-76b99d91f904 https://doi.org/10.1523/JNEUROSCI.3658-16.2017 https://hdl.handle.net/1871.1/5e6741cb-be4b-498c-88ad-76b99d91f904 https://research.vu.nl/ws/files/282150476/Low-Frequency_Cortical_Oscillations_Entrain_to_Subthreshold_Rhythmic_Auditory_Stimuli.pdf http://www.scopus.com/inward/record.url?scp=85018885458&partnerID=8YFLogxK http://www.scopus.com/inward/citedby.url?scp=85018885458&partnerID=8YFLogxK |
| Rights: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.3D79409B |
| قاعدة البيانات: | BASE |
| DOI: | 10.1523/JNEUROSCI.3658-16.2017 |
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