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Integration of Simultaneous Resting-State EEG, fMRI, and Eye Tracker Methods to Determine and Verify EEG Vigilance Measure
[article]
2019
arXiv
pre-print
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Moreover, FOBP also correlated with heart rate (r=0.255, p<0.001), as well as several brain regions in the anti-correlated network, including the bilateral insula and inferior parietal lobule. ...
Concurrent electroencephalography and fMRI (EEG-fMRI) measurements are also widely used to study human brain with high spatial/temporal resolution. ...
Figure 4 : 4 Association between frontal and occipital beta power (FOBP) and heart rate. The correlations between FOBP and heart rate are shown for each run and each subject. ...
arXiv:1912.04975v1
fatcat:gsrzkldtxjdhle4upimfavswdy
Categorized EEG Neurofeedback Performance Unveils Simultaneous fMRI Deep Brain Activation
[chapter]
2012
Lecture Notes in Computer Science
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Comparing the two groups along with their parasympathetic Heart-Rate reactivity profile verified the relaxed state of the responders. ...
Projection of responders variations in the T/A power to the fMRI whole brain maps revealed networks of correlated and inversely correlated activity reflecting induced relaxation, uniquely among responders ...
Fourier transform of the heart rate reveals common high and low frequency peaks of the power spectrum. ...
doi:10.1007/978-3-642-34713-9_14
fatcat:i2ekfmqi4nckhiighysxjegjfy
An orderly sequence of autonomic and neural events at transient arousal changes
[article]
2022
bioRxiv
pre-print
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The temporal relationship between the various signals indicated combined neural and autonomic contribution to the fMRI signal, both of which involve widespread brain areas. ...
To investigate this potential co-variation, we performed rsfMRI experiments while concurrently acquiring electroencephalography and autonomic indicator signals, including heart rate, respiratory depth, ...
Thomas Beck and Dr. Josef Pfeuffer, Siemens AG, Healthcare Sector for providing us with the Advanced fMRI package WIP package. We would also like to thank Dr. Xiaoxiao Bai, Jack W. ...
doi:10.1101/2022.02.05.479238
fatcat:jnwrfvesfjdqpl25dvyaizyum4
Content-Free Awareness: EEG-fcMRI Correlates of Consciousness as Such in an Expert Meditator
2020
Frontiers in Psychology
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The neural correlates of CFA were characterized by a sharp decrease in alpha power and an increase in theta power as well as increases in functional connectivity in the DAN and decreases in the posterior ...
The combination of high-resolution EEG and ultrafast fMRI enabled us to analyze the dynamic aspects of fMRI connectivity informed by EEG power analysis. ...
We also expected increases in theta and alpha power and signs of deep relaxation in the heart-rate and breathing data. ...
doi:10.3389/fpsyg.2019.03064
pmid:32132942
pmcid:PMC7040185
fatcat:h4faa3kfpfepvc33fc35qvwhym
Multimodal Imaging of Dynamic Functional Connectivity
2015
Frontiers in Neurology
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Compared to MEG and EEG, fMRI has a relatively slow temporal sampling rate. With one measurement every 2 s (a typical value) a 10 min session would yield 300 data points. ...
However, the indirect nature of fMRI measurements can hinder the interpretability of the results. ...
No correlations were found between dynamic functional connectivity and fluctuations in heart rate/respiration/head motion (27) . ...
doi:10.3389/fneur.2015.00010
pmid:25762977
pmcid:PMC4329798
fatcat:g4babx4u2vautdvevlwomtwyku
Mapping the functional brain state of a world champion freediver in static dry apnea
2021
Brain Structure and Function
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Compared to resting state at baseline, breath holding was characterized by increased EEG power and functional connectivity in the alpha band, along with decreased delta band connectivity. fMRI connectivity ...
We evaluated the psychological and physiological adaptation and the functional cerebral changes using electroencephalography (EEG) and functional Magnetic Resonance Imaging (fMRI) to 6.5 min of dry static ...
Spectral power in the delta (1-4 Hz), theta (4.1-8 Hz), alpha (8.1-13 Hz), beta (13.1-20 Hz) and gamma (20-45 Hz, (Steriade 2006 )) bands were estimated for bins of 0.5 Hz between 0.5 and 30 Hz, for each ...
doi:10.1007/s00429-021-02361-1
pmid:34420066
fatcat:6x6u4rekuzblhdjrgda6illjiy
Hemodynamic Correlates of Electrophysiological Activity in the Default Mode Network
2019
Frontiers in Neuroscience
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We first detected the DMN from source reconstructed hdEEG data for multiple frequency bands, and we then mapped the correlation between temporal profile of hdEEG-derived DMN activity and fMRI-BOLD signals ...
We suggest that simultaneous EEG-fMRI may represent a powerful tool to investigate the neurophysiological basis of human brain networks. ...
ACKNOWLEDGMENTS The authors would like to thank Quanying Liu for assistance with the data collection. ...
doi:10.3389/fnins.2019.01060
pmid:31636535
pmcid:PMC6788217
fatcat:v3ate65mobdljgmwkgtzivjk5q
The neuronal associations of respiratory-volume variability in the resting state
[article]
2020
bioRxiv
pre-print
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The lag between RVT and EEG is consistent with previously reported values. However, an interesting finding is related to the polarity of the correlation between RVT and EEG. ...
We hypothesize that (1) there is a significant relationship between EEG and RVT in multiple EEG bands, and (2) that this relationship varies by brain region. ...
Acknowledgments This research is funded by the Canadian Institutes of Health Research (CIHR) and the Sandra Rotman Foundation.
References ...
doi:10.1101/2020.10.01.322800
fatcat:e6syh2f2sjfkrjpb6zbpi4dwq4
Fear conditioning prompts sparser representations of conditioned threat in primary visual cortex
2020
Social Cognitive and Affective Neuroscience
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Across acquisition trials, the rate of change in CS+-related alpha desynchronization was correlated with the rate of change in multivoxel pattern representations of CS+. ...
In habituation, which preceded acquisition, and in extinction, the same two gratings were presented without US. ...
Acknowledgements This work was supported by NIH grants R01MH097320 and R01 MH112558.
Declaration of Interest The authors declare no conflicts of interest. ...
doi:10.1093/scan/nsaa122
pmid:32901822
pmcid:PMC7647380
fatcat:amo6v7bh4jgpbek2y3ywyin5ze
Fear conditioning prompts sparser representations of conditioned threat in primary visual cortex
[article]
2020
bioRxiv
pre-print
Preserved Fulltext
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Across acquisition trials, the rate of change in CS+-related alpha desynchronization was correlated with the rate of change in multivoxel pattern representations of the CS+. ...
In habituation, which preceded acquisition, and in final extinction, the same two gratings were presented without the US. ...
The copyright holder for this preprint (which was not peer-reviewed) is the . https://doi.org/10.1101/2020.01.16.909085 doi: bioRxiv preprint ...
doi:10.1101/2020.01.16.909085
fatcat:etenw3hwgzcktimqfh5mqdfxra
The amplitude of the resting-state fMRI global signal is related to EEG vigilance measures
2013
NeuroImage
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In this study, we used simultaneously acquired fMRI and electroencephalographic (EEG) measures of resting-state activity to assess the relation between the fMRI global signal and EEG measures of vigilance ...
between the default mode network and the task-positive network. ...
In particular, we consider EEG measures of vigilance, defined as the ratio between power in the alpha band to the power in the delta and theta bands (Horovitz et al., 2008; Olbrich et al., 2009) . ...
doi:10.1016/j.neuroimage.2013.07.057
pmid:23899724
pmcid:PMC3815994
fatcat:yuhwhz63gzha7cgdjysbtfxjly
Reduced fMRI activity in response to salient stimuli in first-episode schizophrenia
2006
Acta Neuropsychiatrica
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In this age group, heart rate and EEG power had a positive correlation across all frequency bands (delta, theta, alpha, beta r = +0.25, +0.20, +0.14, +0.19, respectively; n = 675, P < 0.001). ...
EEG power was calculated in standard frequency bands, averaged across sites and correlated with average heart rate for each decade of the life span. ...
In this age group, heart rate and EEG power had a positive correlation across all frequency bands (delta, theta, alpha, beta r = +0.25, +0.20, +0.14, +0.19, respectively; n = 675, P < 0.001). ...
doi:10.1017/s0924270800031008
pmid:27397258
fatcat:agy3povxcncgfabfoexfpliswq
Variations in the frequency and amplitude of resting-state EEG and fMRI signals in normal adults: The effects of age and sex
[article]
2020
bioRxiv
pre-print
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We also found that the fMRI-EEG power ratio is higher in young adults than old adults. However, the mediation analysis shows the association between EEG and fMRI parameters in aging is negligible. ...
This is the first study that examines both power and frequency of both resting EEG and fMRI signals in the same cohort. ...
Acknowledgments The authors acknowledge funding support from the Canadian Institutes of Health Research (CIHR) and the Natural Sciences and Engineering Research Council of Canada (NSERC). ...
doi:10.1101/2020.10.02.323840
fatcat:y6yauwudtjgejgwwopwq46nluu
EEG Alpha Power Modulation of fMRI Resting-State Connectivity
2012
Brain Connectivity
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The results show that when alpha power increases, BOLD connectivity between the primary visual cortex and occipital brain regions decreases and that the negative relation of the visual cortex with the ...
Here we use simultaneously recorded EEG and fMRI to assess whether fMRI-based connectivity and frequency-specific EEG power are related. ...
Acknowledgments We would like to thank Lennart Verhagen for helpful discussions and contributions to the analyses. ...
doi:10.1089/brain.2012.0088
pmid:22938826
pmcid:PMC3621304
fatcat:qnjqn63eebdrleugnf2ylcou4i
EEG-correlated fMRI of human alpha activity
2003
NeuroImage
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Here, we implemented continuous and simultaneous EEG/fMRI to identify BOLD signal changes related to spontaneous power fluctuations in the alpha rhythm (8 -12 Hz), the dominant EEG pattern during relaxed ...
The relevance of these findings is discussed in view of the current theories on the generation and significance of the alpha rhythm and the related functional neuroimaging findings. ...
., and A.K. were funded by the Volkswagen Stiftung and K.K. by the Medical Faculty of the Johann Wolfgang Goethe-University, Frankfurt. ...
doi:10.1016/s1053-8119(03)00286-6
pmid:12948703
fatcat:uuxw2hnojnhxpdpuno2wrbh5ke
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