The amplitude of the resting-state fMRI global signal is related to EEG vigilance measures
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TLDR
The amplitude of the global signal exhibited a significant negative correlation with EEG vigilance across subjects studied in the eyes-closed condition and increases in EEG vigilance were significantly associated with both a decrease in global signal amplitude and an increase in the average level of anti-correlation between the default mode network and the task-positive network.About:
This article is published in NeuroImage.The article was published on 2013-12-01 and is currently open access. It has received 252 citations till now. The article focuses on the topics: Resting state fMRI & Vigilance (psychology).read more
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Concordance Among Indices of Intrinsic Brain Function: Inter-Individual Variation and Temporal Dynamics Perspectives
TL;DR: Temporal dynamics analyses revealed that high concordance states are characterized by increased within-and between-network functional connectivity, suggesting more general variations in network integration and segregation, as well as comparing findings across studies that examine inter-individual or group differences using different indices.
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Resting brain fluctuations are intrinsically coupled to visual response dynamics
Michael E. Belloy,Michael E. Belloy,Jacob Billings,Anzar Abbas,Amrit Kashyap,Wen-Ju Pan,Rukun Hinz,Verdi Vanreusel,Johan Van Audekerke,Annemie Van der Linden,Shella D. Keilholz,Marleen Verhoye,Georgios A. Keliris +12 more
TL;DR: The results provide evidence that quasiperiodic patterns (QPPs) govern mouse resting brain dynamics, and provide new frontiers to understand the neural processes that shape functional brain states and modulate sensory input processing.
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Altered functional integration of brain activity is a marker of impaired cognitive performance following sleep deprivation
Nathan E. Cross,F.B. Pomares,Alex Nguyen,Aurore A. Perrault,Aude Jegou,Makoto Uji,Kangjoo Lee,Kangjoo Lee,Kangjoo Lee,Fatemeh Razavipour,Fatemeh Razavipour,Obaï Bin Ka’b Ali,Obaï Bin Ka’b Ali,Umit Aydin,Umit Aydin,Habib Benali,Christophe Grova,Christophe Grova,Thien Thanh Dang-Vu +18 more
TL;DR: Overall, sleep deprivation is associated with increased cortex-wide integration, driven by greater within network integration, and reversal of the balance between segregation and integration of cortical activity was related to both performance decline following SD, and recovery after the nap.
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Slow Endogenous Fluctuations in Cortical fMRI Signals Correlate with Reduced Performance in a Visual Detection Task and Are Suppressed by Spatial Attention.
TL;DR: The results indicate that the amplitude of slow fluctuations of cortical activity is influenced by spatial attention and suggest that these endogenous fluctuations may impair perceptual processing in topographically organized visual cortical areas.
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An altered balance of integrated and segregated brain activity is a marker of cognitive deficits following sleep deprivation
Nathan E. Cross,Florence B. Pomares,Alex Nguyen,Aurore A. Perrault,Aude Jegou,Makoto Uji,Kangjoo Lee,Kangjoo Lee,Kangjoo Lee,Fatemeh Razavipour,Fatemeh Razavipour,Obaï Bin Ka’b Ali,Obaï Bin Ka’b Ali,Umit Aydin,Habib Benali,Christophe Grova,Christophe Grova,Thien Thanh Dang-Vu +17 more
TL;DR: In this article, the authors show that cognitive changes in the sleep-deprived brain can be explained by information processing within and between large-scale cortical networks, and they demonstrate that intra-and inter-individual differences in cortical network integration and segregation during task performance may play a critical role in vulnerability to cognitive impairment in sleep deprived state.
References
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