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- W4387207731 abstract "Alpha oscillations are a distinctive feature of the awake resting state of the human brain. However, their functional role in resting-state neuronal dynamics remains poorly understood. Here we show that, during resting wakefulness, alpha oscillations drive an alternation of attenuation and amplification bouts in neural activity. Our analysis indicates that inhibition is activated in pulses that last for a single alpha cycle and gradually suppress neural activity, while excitation is successively enhanced over a few alpha cycles to amplify neural activity. Furthermore, we show that long-term alpha amplitude fluctuations-the waxing and waning phenomenon-are an attenuation-amplification mechanism described by a power-law decay of the activity rate in the waning phase. Importantly, we do not observe such dynamics during non-rapid eye movement (NREM) sleep with marginal alpha oscillations. The results suggest that alpha oscillations modulate neural activity not only through pulses of inhibition (pulsed inhibition hypothesis) but also by timely enhancement of excitation (or disinhibition)." @default.
- W4387207731 created "2023-09-30" @default.
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- W4387207731 date "2023-10-01" @default.
- W4387207731 modified "2023-10-12" @default.
- W4387207731 title "Beyond pulsed inhibition: Alpha oscillations modulate attenuation and amplification of neural activity in the awake resting state" @default.
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- W4387207731 doi "https://doi.org/10.1016/j.celrep.2023.113162" @default.
- W4387207731 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37777965" @default.
- W4387207731 hasPublicationYear "2023" @default.
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