Abstract
Non-invasive neuroimaging has revealed specific network-based resting-state dynamics in the human brain, yet the underlying neurophysiological mechanism remains unclear. We employed intracranial electroencephalography to characterize local field potentials within the default mode network (DMN), frontoparietal network (FPN), and salience network (SN) in 42 participants. We identified stronger within-network phase coherence at low frequencies (θ and α band) within the DMN, and at high frequencies (γ band) within the FPN. Hidden Markov modeling indicated that the DMN exhibited preferential low frequency phase coupling. Phase-amplitude coupling (PAC) analysis revealed that the low-frequency phase in the DMN modulated the high-frequency amplitude envelopes of the FPN, suggesting frequency-dependent characterizations of intrinsic brain networks at rest. These findings provide intracranial electrophysiological evidence in support of the network model for intrinsic organization of human brain and shed light on the way brain networks communicate at rest.
Original language | English (US) |
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Article number | 120773 |
Journal | Neuroimage |
Volume | 298 |
DOIs | |
State | Published - Sep 2024 |
Funding
This work was supported by the National Natural Science Foundation of China ( 32371104 and 31920103009 ), the Major Project of National Social Science Foundation ( 20&ZD153 ), Sanming Project of Medicine in Shenzhen \u201CMultidisciplinary epilepsy diagnosis and treatment team of Prof.Wang Yuping from Xuanwu Hospital Capital Medical University\u201D ( SZSM202003006 ), Stable Support Project of Shenzhen ( Project No.20231122135121001 ), and Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions ( 2023SHIBS0003 ).
Keywords
- Brain networks
- Intracranial EEG
- Intrinsic connectivity
- Phase synchronization
- Resting-state
ASJC Scopus subject areas
- Neurology
- Cognitive Neuroscience