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Spontaneous Theta Rhythm Predicts Insomnia Duration: A Resting-State EEG Study

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Advances in Cognitive Neurodynamics (VI)

Part of the book series: Advances in Cognitive Neurodynamics ((ICCN))

Abstract

Increased theta power and subjective sleepiness during waking EEG had been found in many researches of sleep deprivation. However, rare studies had ever investigated the theta rhythm in awake and its cortical generators in insomnia disorder (ID). Consequently, based on the scalp EEG signal and its brain cortex distribution reconstructed by a network-based source imaging, we explored the abnormal theta power of insomniacs with different insomnia duration and its cortical generators. Results indicated that, compared to good sleepers, only ID with insomnia duration above 3 years presented sustained decreased theta power in multiple networks. Intriguingly, the theta power of frontoparietal (FPN) and deep structure network (DSN) was negatively correlated with the insomnia duration. These findings suggested that decreased waking theta power in ID may be the electrophysiological correlate of subjective sleepiness deficiency, and the theta power of FPN and DSN was good predictors for the insomnia duration.

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Acknowledgments

This research was supported by grants from the National Nature Science Foundation of China (31571111) and Fundamental Research Funds for the Central Universities (SWU1609109).

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Correspondence to Xu Lei .

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Zhao, W. et al. (2018). Spontaneous Theta Rhythm Predicts Insomnia Duration: A Resting-State EEG Study. In: Delgado-García, J., Pan, X., Sánchez-Campusano, R., Wang, R. (eds) Advances in Cognitive Neurodynamics (VI). Advances in Cognitive Neurodynamics. Springer, Singapore. https://doi.org/10.1007/978-981-10-8854-4_45

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