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EEG microstates as a continuous phenomenon

Ashutosh Mishra, Bernhard Englitz, Michael X. Cohen
2019 NeuroImage  
In recent years, EEG microstate analysis has gained popularity as a tool to characterize spatio-temporal dynamics of large-scale electrophysiology data.  ...  In this study we investigated these assumptions by taking a geometric perspective of EEG data, treating microstate topographies as basis vectors for a subspace of the original channel space.  ...  BE was supported by a European Commission's Marie-Sklodowska Curie Grant (660328), a NWO VIDI Grant (016.189.052) and a NWO ALW Open Grant (ALWOP.346).  ... 
doi:10.1016/j.neuroimage.2019.116454 pmid:31841679 fatcat:734lwfs2g5c6lic6cf3e2unini

Calculation and Analysis of Microstate Related to Variation in Executed and Imagined Movement of Force of Hand Clenching

Yunfa Fu, Jian Chen, Xin Xiong
2018 Computational Intelligence and Neuroscience  
It is expected that this microstate analysis may be used as a new method for observing EEG instantaneous activity patterns related to variation in executed and imagined grip force and also for extracting  ...  microstate analysis in which the spatial topographic map of EEG behaves in a certain number of discrete and stable global brain states.  ...  phenomenon.  ... 
doi:10.1155/2018/9270685 pmid:30224914 pmcid:PMC6129787 fatcat:kdpqcdodgngm5kslrp6g5vicw4

EEG microstate sequences in healthy humans at rest reveal scale-free dynamics

D. Van De Ville, J. Britz, C. M. Michel
2010 Proceedings of the National Academy of Sciences of the United States of America  
The topography does not change randomly and continuously over time, but remains stable for~80-120 ms; these periods of quasi-stability are termed "EEG microstates" (7, 8).  ...  Recent findings identified electroencephalography (EEG) microstates as the electrophysiological correlates of fMRI resting-state networks.  ...  Indeed, spontaneous EEG makes an ideal candidate to observe this type of phenomenon; any kind of averaging such as for evoked potentials would destroy the fractal structure of the data.  ... 
doi:10.1073/pnas.1007841107 pmid:20921381 pmcid:PMC2964192 fatcat:croa35eyubg5jiblyaakfjfpia

EEG Microstate Analysis in Drug-Naive Patients with Panic Disorder

Mitsuru Kikuchi, Thomas Koenig, Toshio Munesue, Akira Hanaoka, Werner Strik, Thomas Dierks, Yoshifumi Koshino, Yoshio Minabe, Takeo Yoshikawa
2011 PLoS ONE  
Based on EEG, we investigated the difference between patients with PD and normal controls in resting state activity using features of transiently stable brain states (microstates).  ...  Microstate analysis showed that one class of microstates (with a right-anterior to left-posterior orientation of the mapped field) displayed longer durations and covered more of the total time in the patients  ...  phenomenon) to PD.  ... 
doi:10.1371/journal.pone.0022912 pmid:21829554 pmcid:PMC3146502 fatcat:wilrjzzxorgstlubm333aypnjm

Using microstate intensity for the analysis of spontaneous EEG: Tracking changes from alert to the fatigue state

R.A. Thuraisingham, Y. Tran, A. Craiga, N. Wijesuriya, Hung Nguyen
2009 2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society  
Using microstate intensity for the analysis of spontaneous EEG:Tracking changes from alert to the fatigue state  ...  The phase of the analytic signal is made continuous using the Matlab routine unwrap, which unwraps the phase to make it continuous across the π . III.  ...  To understand this phenomenon there have been studies that have investigated the association between brain electrical activity using electroencephalography (EEG), and the onset of fatigue symptoms.  ... 
doi:10.1109/iembs.2009.5334094 pmid:19964657 fatcat:anaecv4fgnbf3gamyf2oryl7gi

A pharmaco-EEG study on antipsychotic drugs in healthy volunteers

Masafumi Yoshimura, Thomas Koenig, Satoshi Irisawa, Toshiaki Isotani, Keizo Yamada, Mitsuru Kikuchi, Gaku Okugawa, Takami Yagyu, Toshihiko Kinoshita, Werner Strik, Thomas Dierks
2007 Psychopharmacology  
In a time-domain analysis, we quantified the EEG by identifying clusters of transiently stable EEG topographies (microstates).  ...  Results Perospirone increased duration of a microstate class typically shortened in schizophrenics.  ...  pharmacists of the Kansai Medical University Hospital's Pharmacy for the preparation of the test drugs and the colleagues of Department of Neuropsychiatry, Kansai Medical University for their help with the EEG  ... 
doi:10.1007/s00213-007-0737-8 pmid:17333135 fatcat:5sq2e6m5gfdhphbihhwqukp2a4

Evidence for modulation of EEG microstate sequence by vigilance level

Marina Krylova, Sarah Alizadeh, Igor Izyurov, Vanessa Teckentrup, Catie Chang, Johan van derMeer, Michael Erb, Nils Kroemer, Thomas Koenig, Martin Walter, Hamidreza Jamalabadi
2020 NeuroImage  
for microstate classes A and B.  ...  The momentary global functional state of the brain is reflected in its electric field configuration and cluster analytical approaches have consistently shown four configurations, referred to as EEG microstate  ...  EEG and fMRI data were provided as courtesy for the purpose of these analyses which were not related to the trial objectives.  ... 
doi:10.1016/j.neuroimage.2020.117393 pmid:32971266 fatcat:evvwsmvftfh6vkosg3dts5xlei

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.  ...  A B S T R A C T The present review discusses a well-established method for characterizing resting-state activity of the human brain using multichannel electroencephalography (EEG).  ...  Microstates and the phenomenon of discrete epochs of cognition The microstate concept arose from a purely phenomenological description of EEG map series, along with the observations that microstates can  ... 
doi:10.1016/j.neuroimage.2017.11.062 pmid:29196270 fatcat:selgpkcl3rdk3l5iwufyzx4xfy

The Resting-State Electroencephalogram Microstate Correlations With Empathy and Their Moderating Effect on the Relationship Between Empathy and Disgust

Meng Zhang, Zhaoxian Li, Li Wang, Shiyan Yang, Feng Zou, Yufeng Wang, Xin Wu, Yanyan Luo
2021 Frontiers in Human Neuroscience  
To answer this question, we collected electroencephalogram microstates (EEG-ms) of 196 college students at rest and used the Disgust Scale and Interpersonal Reactivity Index.  ...  As a negative emotion, disgust processing involves insula coupling. What are the neurophysiological characteristics for regulating the levels of empathy and disgust?  ...  The EEG-ms, as a method to reflect the microstate of the brain, is simple, feasible, and efficient, but the spatial construction ability is not as intuitive as MRI.  ... 
doi:10.3389/fnhum.2021.626507 fatcat:5bwuwcezqffn7i7gjxef5y67na

EEG signals respond differently to idea generation, idea evolution and evaluation in a loosely controlled creativity experiment

Wenjun Jia, Yong Zeng
2021 Scientific Reports  
Combined EEG-fMRI and EEG source localization studies have indicated that EEG microstate classes are closely associated with the resting-state network as identified using fMRI.  ...  EEG microstate analysis was used to structure the unstructured EEG data to detect the activation of multiple brain networks.  ...  Compared to conventional spectral analysis, as shown in Table 1 , EEG microstate analysis is more capable of structuring the EEG data into a set of semi-stable segments in which EEG changes are associated  ... 
doi:10.1038/s41598-021-81655-0 pmid:33483583 fatcat:z3g5dss3sfhgrie4wyhojyftg4

Altered EEG Microstates During the Motor Preparation Process for Voluntary and Instructed Action

Lipeng Zhang, School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China, Tongda Shen, Rui Zhang, Yuxia Hu, Henan Key Laboratory of Brain Science and Brain–Computer Interface Technology, Zhengzhou 450001, China, Tandon School of Engineering of New York University, New York, USA, School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China, Henan Key Laboratory of Brain Science and Brain–Computer Interface Technology, Zhengzhou 450001, China, School of Electrical Engineering, Zhengzhou University, Zhengzhou 450001, China, Henan Key Laboratory of Brain Science and Brain–Computer Interface Technology, Zhengzhou 450001, China
2022 Engineered Science  
conditions, as well as left hand (LH) and right hand (RH) movement conditions.  ...  Our results demonstrated alterations in the parameters of EEG microstates between the resting state and motor preparation.  ...  [47] This phenomenon may also be interpreted as left-brain dominance for motor planning in humans.  ... 
doi:10.30919/es8d648 fatcat:uq7hqg2gb5dqvj7deywa2tg7ty

EEG microstate dynamics indicate a U-shaped path to propofol-induced loss of consciousness [article]

Fiorenzo Artoni, Julien Maillard, Juliane Britz, Martin Seeber, Christopher Lysakowski, Lucie Brechet, Martin R Tramer, Christoph M Michel
2021 bioRxiv   pre-print
To further understand the link between EEG microstate dynamics and consciousness, we continuously recorded high-density EEG in 23 surgical patients from their awake state to unconsciousness, induced by  ...  Electroencephalographical (EEG) microstates are proposed as the neurophysiological correlates of these transiently stable brain states that last for fractions of seconds.  ...  We acknowledge access to the facilities and expertise of the CIBM Center for Biomedical Imaging, a Swiss research center of excellence founded and supported by Lausanne University Hospital (CHUV), University  ... 
doi:10.1101/2021.10.26.465841 fatcat:ktkup2uhafaghbo7mjtptcaxay

EEG oscillatory states as neuro-phenomenology of consciousness as revealed from patients in vegetative and minimally conscious states

Alexander A. Fingelkurts, Andrew A. Fingelkurts, Sergio Bagnato, Cristina Boccagni, Giuseppe Galardi
2012 Consciousness and Cognition  
Specifically, results demonstrated that (a) decreased number of EEG microstate types was associated with altered states of consciousness, (b) unawareness was associated with the lack of diversity in EEG  ...  In conclusion, resting EEG has a potential value in revealing NCC. This work may have implications for clinical care and medical-legal decisions in patients with disorders of consciousness.  ...  Introduction Consciousness versus Vigilance Consciousness is often conceptualized as (a) a phenomenon with two components: wakefulness and awareness (Laureys, 2005) and (b) a gradual phenomenon with  ... 
doi:10.1016/j.concog.2011.10.004 pmid:22054641 fatcat:kmplbtr3lnfj7aym63ncvyed7i

Self-reported Mind Wandering and Response Time Variability Differentiate Prestimulus Electroencephalogram Microstate Dynamics during a Sustained Attention Task

Anthony P. Zanesco, Ekaterina Denkova, Amishi P. Jha
2020 Journal of Cognitive Neuroscience  
Brain activity continuously and spontaneously fluctuates during tasks of sustained attention.  ...  Broadband electroencephalography was recorded and segmented into a time series of brain electric microstates based on data-driven clustering of topographic voltage patterns.  ...  (C) Epochs are continuously labeled according to the global cluster centroid that best correlates with the voltage map at EEG samples to reexpress the EEG time series as a sequence of microstates.  ... 
doi:10.1162/jocn_a_01636 pmid:33054554 fatcat:mgkbntnzbbhrpbtscen3pxusfe

Cognitive manipulation of brain electric microstates

Benjamin A. Seitzman, Malene Abell, Samuel C. Bartley, Molly A. Erickson, Amanda R. Bolbecker, William P. Hetrick
2017 NeuroImage  
Finally, at least 15 microstates (identified via k-means clustering) were required to explain a similar amount of variance of EEG activity as previously published values.  ...  The present study used high density EEG to examine the degree to which spatial and temporal properties of microstates may be altered by manipulating cognitive task (a serial subtraction task vs. wakeful  ...  Signal Processing The continuous EEG data were segmented into 5 second epochs and down sampled to 128 Hz.  ... 
doi:10.1016/j.neuroimage.2016.10.002 pmid:27742598 pmcid:PMC5321823 fatcat:eprp557iqbhfxmf6vnytmhuic4
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