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Global waves synchronize the brain's functional systems with fluctuating arousal

Ryan V. Raut, Abraham Z. Snyder, Anish Mitra, Dov Yellin, Naotaka Fujii, Rafael Malach, Marcus E. Raichle
2021 Science Advances  
We propose and empirically support a parsimonious account of intrinsic, brain-wide spatiotemporal organization arising from traveling waves linked to arousal.  ...  Here, using fMRI in humans, we show that ongoing arousal fluctuations are associated with global waves of activity that slowly propagate in parallel throughout the neocortex, thalamus, striatum, and cerebellum  ...  Bauer and I. Z. Kiss for helpful discussions. We additionally thank B. T. T. Yeo, A. J. Holmes, J. Chen, and colleagues for sharing processed FreeSurfer files for the GSP dataset and R. L.  ... 
doi:10.1126/sciadv.abf2709 pmid:34290088 fatcat:iyt3rbu54zf3dgik3xtofquu5i

Multimodal transcranial magnetic stimulation: Using concurrent neuroimaging to reveal the neural network dynamics of noninvasive brain stimulation

J. Reithler, J.C. Peters, A.T. Sack
2011 Progress in Neurobiology  
Link to publication General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of  ...  in the public portal.  ...  Acknowledgements This work was supported by grant #452-06-003 from the Netherlands Organization of Scientific Research (NWO) to ATS.  ... 
doi:10.1016/j.pneurobio.2011.04.004 pmid:21527312 fatcat:zy5l6tfp35efpgceanjkvkivt4

Top-down flow of visual spatial attention signals from parietal to occipital cortex

T. Z. Lauritzen, M. D'Esposito, D. J. Heeger, M. A. Silver
2009 Journal of Vision  
Sustained allocation of spatial attention causes persistent increases in functional magnetic resonance imaging (fMRI) signals in portions of early visual cortex that retinotopically represent the attended  ...  We employed fMRI and coherency analysis to measure functional connectivity among cortical areas V1, V2, V3, V3A, V3B, V7, IPS1, and IPS2 during sustained visual spatial attention.  ...  Acknowledgments Work supported by the Lundbeck Foundation (TZL) and NIH grants R01-MH63901, P01-NS40813 (MD), R01-MH69880 (DJH), and R21-EY17926 (MAS).  ... 
doi:10.1167/9.13.18 pmid:20055551 pmcid:PMC2857595 fatcat:5pl7kui7jfcbpeuqfm63y7vohe

Mapping human brain networks with cortico-cortical evoked potentials

C. J. Keller, C. J. Honey, P. Megevand, L. Entz, I. Ulbert, A. D. Mehta
2014 Philosophical Transactions of the Royal Society of London. Biological Sciences  
We thank Fred Lado, Ido Davidesco and Charles Schroeder for comments on an early draft of this manuscript; Ido Davidesco and Rafael Malach for helping with the task-based experimental design and analysis  ...  The authors are enormously indebted to the patients that participated in this work, as well as the nursing and physician staff of North Shore LIJ hospitals.  ...  Additionally, it will be important to study the effect of cognitive state (e.g. rest, task) on the properties of these directed CCEP networks.  ... 
doi:10.1098/rstb.2013.0528 pmid:25180306 pmcid:PMC4150303 fatcat:s5ws5mxny5g7rmixctwg67ygxe

Selective cholinergic stimulation of the medial septum-diagonal band of Broca via DREADDs improves spatial learning in healthy rats [article]

Stephan Missault, Sam De Waegenaere, Lauren Kosten, Annemie Van der Linden, Marleen Verhoye, Georgios A. Keliris
2022 bioRxiv   pre-print
on resting-state brain networks using resting-state functional MRI.  ...  While the combined effect of radial arm maze learning and the necessary chronic food restriction with or without chronic MSDB stimulation had no observable effect on resting-state networks, chronic food  ...  The computational resources and services used in this work for making the EPI template and realigning the pharmacological functional connectivity fMRI data were provided by the HPC core facility CalcUA  ... 
doi:10.1101/2022.08.02.502516 fatcat:c5f7yt5yyzgldlzs4ygjw22euq

Global vs. Network-Specific Regulations as the Source of Intrinsic Coactivations in Resting-State Networks

Shiori Amemiya, Hidemasa Takao, Osamu Abe
2019 Frontiers in Systems Neuroscience  
In the present study, we investigated the contribution from each mechanism by directly identifying the global as well as local component of resting-state functional MRI (fMRI) data provided by human connectome  ...  for its coactivation, regardless of whether vascular artifacts contaminate the global component in fMRI measures.  ...  HCP Data Data of 50 subjects who underwent 3 T resting-state fMRI sessions without quality control issues, and whose mean FIGURE 1 | Schematic of the resting-state fMRI data processing.  ... 
doi:10.3389/fnsys.2019.00065 pmid:31736721 pmcid:PMC6829116 fatcat:blfnzrk5vnaczhholea3d4oqbu

Large-Scale Intrinsic Functional Brain Organization Emerges from Three Canonical Spatiotemporal Patterns [article]

Taylor S Bolt, Jason Nomi, Danilo Bzdok, Catie Chang, B.T. Thomas Yeo, Lucina Q Uddin, Shella Keilholz
2021 bioRxiv   pre-print
Overall, these three spatiotemporal patterns account for a wide variety of previously observed phenomena in the resting-state fMRI literature including the task-positive/task-negative anticorrelation,  ...  By analyzing resting-state fMRI data from the Human Connectome Project using a large number of popular analytic techniques, we find that all results can be seamlessly reconciled by three fundamental low-frequency  ...  of Mental Health (NIMH) (to LQU), and an NIMH award (R03MH121668), and a NARSAD Young Investigator Award to (to JSN).  ... 
doi:10.1101/2021.06.20.448984 fatcat:ddf6da2ymjaatnbwlcsqqwreme

Exploration and modulation of brain network interactions with noninvasive brain stimulation in combination with neuroimaging

Mouhsin M. Shafi, M. Brandon Westover, Michael D. Fox, Alvaro Pascual-Leone
2012 European Journal of Neuroscience  
The same techniques can also be applied to explore hypotheses regarding the changes in functional connectivity that occur during task performance and in various disease states such as stroke, depression  ...  Here we review the utility of combined noninvasive brain stimulation and neuroimaging approaches towards greater understanding of dynamic brain networks in health and disease.  ...  (fMRI) to study brain function both in the resting state and during performance of various behavioral tasks.  ... 
doi:10.1111/j.1460-9568.2012.08035.x pmid:22429242 pmcid:PMC3313459 fatcat:mpf6gfqoyzerllhywqutacplim

Intensity-Dependent Effects of Acute Exercise on Executive Function

Aylin Mehren, Cecilia Diaz Luque, Mirko Brandes, Alexandra P. Lam, Christiane M. Thiel, Alexandra Philipsen, Jale Özyurt
2019 Neural Plasticity  
Exercise had no effect on brain activation in the flanker task, but an explorative analysis revealed that reaction times improved after high-intensity exercise.  ...  These data show that exercise at moderate vs. high intensity has different effects on executive task performance and related brain activation changes as measured by fMRI and that cardiorespiratory fitness  ...  Supplementary Materials Task-related brain activation in the control condition as well as gender differences regarding exercise effects on brain activation are described. (Supplementary Materials)  ... 
doi:10.1155/2019/8608317 pmid:31281346 pmcid:PMC6589258 fatcat:2nahudg6ufatdhcll2atmfkxkm

EEG microstates as a tool for studying the temporal dynamics of whole-brain neuronal networks: A review

Christoph M. Michel, Thomas Koenig
2018 NeuroImage  
Combined EEG-fMRI studies and EEG source imaging studies have indicated that EEG microstates are closely associated with resting-state networks as identified using fMRI.  ...  The present review will provide an overview of these EEG microstates, available methods for analysis, the functional interpretations of findings regarding these microstates, and their behavioral and clinical  ...  Acknowledgments The work described in this article was supported by the Swiss National Science Foundation (grant No. 320030_159705) to CMM and by the National Center of Competence in Research (NCCR) "SYNAPSY-The  ... 
doi:10.1016/j.neuroimage.2017.11.062 pmid:29196270 fatcat:selgpkcl3rdk3l5iwufyzx4xfy

Brain reactivity using fMRI to insomnia stimuli in insomnia patients with discrepancy between subjective and objective sleep

Young-Bo Kim, Nambeom Kim, Jae Jun Lee, Seo-Eun Cho, Kyoung-Sae Na, Seung-Gul Kang
2021 Scientific Reports  
significantly increased blood oxygen level dependent (BOLD) signal in the contrast of Ins vs.  ...  Increased brain activity to insomnia-related stimuli in several brain regions of the SODS group is likely due to these individuals being more sensitive to sleep-related threat and negative cognitive distortion  ...  Visualization of fMRI results was performed using Vinci (http://vinci Region of interest (ROI) analysis.  ... 
doi:10.1038/s41598-021-81219-2 pmid:33452376 fatcat:dx7lhorzbne5zomohz5rrvaeeq

Repetition priming and repetition suppression: A case for enhanced efficiency through neural synchronization

Stephen J. Gotts, Carson C. Chow, Alex Martin
2012 Cognitive Neuroscience  
We argue that despite exciting recent work on the role of neural synchronization in cognitive processes such as attention and perception, similar studies in the domain of learning and memory -and priming  ...  In this Discussion Paper, we review four different theoretical proposals that have the potential to link repetition suppression and priming, with a particular focus on a proposal that stimulus repetition  ...  The preparation of this paper was supported by the National Institute of Mental Health, NIH, Division of Intramural Research.  ... 
doi:10.1080/17588928.2012.670617 pmid:23144664 pmcid:PMC3491809 fatcat:3phrpilf4fcbjjyh6w4sflqvmy

Bi-Stable Perception: Self-Coordinating Brain Regions to Make-Up the Mind

Christ Devia, Miguel Concha-Miranda, Eugenio Rodríguez
2022 Frontiers in Neuroscience  
The functional magnetic resonance imaging (fMRI) evidence suggests the activation of a large network of distant brain areas.  ...  In a final section of the review we dwell on the reasons behind such scarcity and on the need of integration in order to achieve a real understanding of the complexities underlying bi-stable perception  ...  The visual network, which included the aSPL, had a positive correlation with perceptual changes, whereas the frontal network, which included the pSPL, had a negative correlation with the duration of perception  ... 
doi:10.3389/fnins.2021.805690 pmid:35153663 pmcid:PMC8829010 fatcat:qtx6ae3m2rep3jn55vqfkbf6zu

Repetition priming and repetition suppression: Multiple mechanisms in need of testing

Stephen J. Gotts, Carson C. Chow, Alex Martin
2012 Cognitive Neuroscience  
In the same study, repetition suppression was evident in visual responses of neurons in IT cortex at a latency of 150ms ( Figure 2A ).  ...  task-engaged cortical network.  ... 
doi:10.1080/17588928.2012.697054 pmid:24171755 fatcat:yeh7cvefwnhuraht5jfmpb73ly

Explaining away repetition effects via predictive coding

Michael P. Ewbank, Richard N. Henson
2012 Cognitive Neuroscience  
In the same study, repetition suppression was evident in visual responses of neurons in IT cortex at a latency of 150ms ( Figure 2A ).  ...  task-engaged cortical network.  ... 
doi:10.1080/17588928.2012.689960 pmid:24171747 fatcat:paxn2wrv45cv3gd3l7rjttilme
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