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Opening or closing eyes at rest modulates the functional connectivity of V1 with default and salience networks

Víctor Costumero, Elisenda Bueichekú, Jesús Adrián-Ventura, César Ávila
2020 Scientific Reports  
Using the same scanner, fMRI data from two groups of participants similar in age, sex and educational level were acquired.  ...  All these findings were replicated using an open source shared dataset.  ...  We used the Data Processing & Analysis for Brain Imaging (DAPBI V4.2, http:// rfmri.org/dpabi) 39 , to carry out the resting state fMRI data processing.  ... 
doi:10.1038/s41598-020-66100-y pmid:32499585 fatcat:uma32kd2snezbni542i5hjvqbq

Reproducibility of R-fMRI Metrics on the Impact of Different Strategies for Multiple Comparison Correction and Sample Sizes [article]

Xiao Chen, Bin Lu, Chao-Gan Yan
2017 bioRxiv   pre-print
Concerns regarding reproducibility of resting-state functional magnetic resonance imaging (R-fMRI) findings have been raised.  ...  Although R-fMRI indices attained moderate reliabilities, they replicated poorly in distinct datasets (replicability < 0.3 for between-subject sex differences, < 0.5 for within-subject EOEC differences)  ...  ACKNOWLEDGEMENTS The authors appreciate the editorial assistance and support of Dr. F. Xavier Castellanos. This  ... 
doi:10.1101/128645 fatcat:ixa3zlimvfbo3n4i5zcxbbr2hq

Exploring the reproducibility of functional connectivity alterations in Parkinson's disease

Liviu Badea, Mihaela Onu, Tao Wu, Adina Roceanu, Ovidiu Bajenaru, Satoru Hayasaka
2017 PLoS ONE  
We acquired resting-state fMRI scans for 43 subjects (27 patients , 16 controls) and compared the observed FC changes with those obtained in 2 independent datasets, one made available by the PPMI consortium  ...  To distinguish between the two, we devised a method to directly check for disease heterogeneity using random splits of a single dataset.  ...  Repeating our analysis of reproducibility of FC group changes on random splits of the Beijing eyes open-eyes closed dataset [39] (see Supporting Information) revealed reproducibility (p<0.05) not just  ... 
doi:10.1371/journal.pone.0188196 pmid:29182621 pmcid:PMC5705108 fatcat:yarvu3jf4fdk3ikxcbhaidvgoa

Making data sharing work: The FCP/INDI experience

Maarten Mennes, Bharat B. Biswal, F. Xavier Castellanos, Michael P. Milham
2013 NeuroImage  
In 2009, ambitions for open-access data sharing were revived in the resting state functional MRI community in the form of two grassroots initiatives: the 1000 Functional Connectomes Project (FCP) and its  ...  Over a decade ago, the fMRI Data Center (fMRIDC) pioneered open-access data sharing in the task-based functional neuroimaging community.  ...  to add the word 'Functional'; Yu-Feng Zang for leading the FCP and INDI in terms of dataset contributions; Xi-Nian Zuo for his many efforts in the analyses for the 1000 Functional Connectome Project Consortium  ... 
doi:10.1016/j.neuroimage.2012.10.064 pmid:23123682 pmcid:PMC3959872 fatcat:syg6pwwcn5e4zi536lrgxdupdy

Characterizing Rapid Fluctuations of Resting State Functional Connectivity in Demyelinating, Neurodegenerative, and Psychiatric Conditions: From Static to Time-Varying Analysis

Paola Valsasina, Milagros Hidalgo de la Cruz, Massimo Filippi, Maria A. Rocca
2019 Frontiers in Neuroscience  
Functional magnetic resonance imaging (fMRI) at resting state (RS) has been widely used to characterize the main brain networks.  ...  Aim of this review is to provide a description of the methods currently used to assess TVC on RS fMRI data, and to summarize the main results of studies applying TVC in healthy controls and patients with  ...  of the sensory and motor networks exhibit more stable connectivity configurations Allen et al. (2017) Siemens Sonata 1.5T Eyes open/Eyes closed 255 volumes TR = 2 s 1.  ... 
doi:10.3389/fnins.2019.00618 pmid:31354402 pmcid:PMC6636554 fatcat:lezpk4273ne6jma6z45k6bsvii

Transcranial alternating current stimulation affects the BOLD signal in a frequency and task-dependent manner

Yuranny Cabral-Calderin, Christiane Anne Weinrich, Carsten Schmidt-Samoa, Eva Poland, Peter Dechent, Mathias Bähr, Melanie Wilke
2015 Human Brain Mapping  
Here we asked how tACS modulates regional fMRI blood oxygenation level dependent (BOLD) signal as a function of frequency, current strength, and task condition.  ...  TACS was applied over the posterior cortex of healthy human subjects while the BOLD signal was measured during rest or task conditions (visual perception, passive video viewing and motor task).  ...  They thank Andrea Antal for advice on the tACS stimulation. They also thank Igor Kagan and Julio Hechavarria for helpful comments on an earlier version of the manuscript.  ... 
doi:10.1002/hbm.23016 pmid:26503692 pmcid:PMC5057312 fatcat:dzawrj4nnnd3llawhjcryjnwqy

Statistical power and prediction accuracy in multisite resting-state fMRI connectivity

Christian Dansereau, Yassine Benhajali, Celine Risterucci, Emilio Merlo Pich, Pierre Orban, Douglas Arnold, Pierre Bellec
2017 NeuroImage  
Connectivity studies using resting-state functional magnetic resonance imaging are increasingly pooling data acquired at multiple sites.  ...  We then implemented a series of Monte-Carlo simulations, based on real data, to evaluate the impact of the multisite effects on detection power in statistical tests comparing two groups (with and without  ...  flip angle, voxel resolution or acquisition volume , experimental design such as eyes-open/eyes-closed (Yan et al., 2009) , experiment duration (Van Dijk et al., 2010) , and scanning environment such  ... 
doi:10.1016/j.neuroimage.2017.01.072 pmid:28161310 fatcat:jqmi7jhnbzggfg4b2ug3a4o7se

Common Effects of Amnestic Mild Cognitive Impairment on Resting-State Connectivity Across Four Independent Studies

Angela Tam, Christian Dansereau, AmanPreet Badhwar, Pierre Orban, Sylvie Belleville, Howard Chertkow, Alain Dagher, Alexandru Hanganu, Oury Monchi, Pedro Rosa-Neto, Amir Shmuel, Seqian Wang (+2 others)
2015 Frontiers in Aging Neuroscience  
Resting-state functional connectivity is a promising biomarker for Alzheimer's disease.  ...  However, previous resting-state functional magnetic resonance imaging studies in Alzheimer's disease and amnestic mild cognitive impairment (aMCI) have shown limited reproducibility as they have had small  ...  To identify robust changes in resting-state connectivity between aMCI and CN, we implemented a meta-analysis of four independent resting-state fMRI datasets (ADNI2 and three small single-site studies)  ... 
doi:10.3389/fnagi.2015.00242 pmid:26733866 pmcid:PMC4689788 fatcat:bwnwfxl4ejft5it34265tzmu3q

Measuring states of pathological (un)consciousness: research dimensions, clinical applications, and ethics†

Athena Demertzi, Jacobo Diego Sitt, Simone Sarasso, Wim Pinxten
2017 Neuroscience of Consciousness  
Here, we aim at (i) bringing together state of the art approaches to classification of single patients suffering from disorders of consciousness by means of motor-independent assessment of consciousness  ...  state), is expected to ameliorate clinical management and further inform on the critical patterns of (un)consciousness.  ...  The VS/UWS is characterized as a "state of arousal without awareness" (Jennett and Plum 1972) because, although patients show intermittent wakefulness (manifested as eyes-open/eyes-closed periods), preserved  ... 
doi:10.1093/nc/nix010 pmid:30042843 pmcid:PMC6007135 fatcat:62cmuqboz5g4da4e4itb4q3j3e

Statistical feature extraction for artifact removal from concurrent fMRI-EEG recordings

Zhongming Liu, Jacco A. de Zwart, Peter van Gelderen, Li-Wei Kuo, Jeff H. Duyn
2012 NeuroImage  
Evaluation based on a large set of simultaneous EEG-fMRI data obtained during a variety of behavioral tasks, sensory stimulations and resting conditions showed excellent data quality and robust performance  ...  Special emphases are directed upon the use of statistical metrics and methods for the extraction and selection of features that characterize gradient and pulse artifacts.  ...  Hanchuan Peng for kindly sharing his C program for computing entropy and mutual information, Dr. Masaki Fukunaga and Susan Guttman for their assistance in data collection and Drs.  ... 
doi:10.1016/j.neuroimage.2011.10.042 pmid:22036675 pmcid:PMC3254729 fatcat:kzjwtnolvra7xh6al3qbikeude

The influence of COMT rs4680 on functional connectivity in healthy adults: A systematic review

Kim A. Morris, Sally A. Grace, Will Woods, Brian Dean, Susan L. Rossell
2020 European Journal of Neuroscience  
The aim of this systematic review was to qualitatively synthesise the available research that investigated the influence of COMT genotype at SNP rs4680 on both task-based and resting-state connectivity  ...  Of the included studies, 20 studies reported resting-state findings and 16 studies reported task-based findings (emotion processing, memory, working memory, reward-based learning, and executive function  ...  Figure 1. here Study quality and risk of bias Issues regarding comparability across studies, including; eyes open/eyes closed conditions, sample characteristics, and lack of power are covered under "  ... 
doi:10.1111/ejn.14748 pmid:32306439 fatcat:jyay2ygbvrblfiamhemnylf7be

Importance, limits and caveats of the use of "disorders of consciousness" to theorize consciousness

Bertrand Hermann, Aude Sangaré, Esteban Munoz-Musat, Amina Ben Salah, Pauline Perez, Mélanie Valente, Frédéric Faugeras, Vadim Axelrod, Sophie Demeret, Clémence Marois, Nadya Pyatigorskaya, Marie-Odile Habert (+4 others)
2021 Neuroscience of Consciousness  
in the light of original resting-state positron emission tomography data, that behavioral MCS captures an important but misnamed clinical condition that rather corresponds to a cortically mediated state  ...  For instance, the existence of states of vigilance free of any self-reportable subjective experience [e.g.  ...  Regarding the latter (i.e. sleep-wake cycles preservation in the VS), one should first be aware that alternating periods of eyes-open/eyes-closed behaviors do not necessarily correspond to genuine sleep-wake  ... 
doi:10.1093/nc/niab048 pmid:35369675 pmcid:PMC8966966 fatcat:nn77y7c5a5anvp5s234tmt3cdq

Modelling Subject Variability in the Spatial and Temporal Characteristics of Functional Modes

Samuel J. Harrison, Janine D. Bijsterboch, Andrew R. Segerdahl, Sean P. Fitzgibbon, Seyedeh-Rezvan Farahibozorg, Eugene P. Duff, Stephen M. Smith, Mark W. Woolrich
2020 NeuroImage  
Using simulated data, resting-state data from 1000 subjects collected as part of the Human Connectome Project (Van Essen et al., 2013), and an analysis of 14 subjects in a variety of continuous task-states  ...  A new implementation of the inference now also allows for the analysis of modern, large-scale data sets.  ...  Acknowledgements We would like to offer our profound thanks to Tamar Makin for making the active-state data set available, and to Roser Sala-Llonch and Sasidar Madugular for the preprocessing.  ... 
doi:10.1016/j.neuroimage.2020.117226 pmid:32771617 pmcid:PMC7779373 fatcat:4bak5kt4rfcmzbzkyrg3lv34zi

Modelling Subject Variability in the Spatial and Temporal Characteristics of Functional Modes [article]

Samuel J. Harrison, Janine D. Bijsterbosch, Andrew R. Segerdahl, Sean P. Fitzgibbon, Eugene Duff, Stephen M. Smith, Mark W. Woolrich
2019 bioRxiv   pre-print
Using resting- state data from 1000 subjects collected as part of the Human Connectome Project [Van Essen et al. 2013], and an analysis of 14 subjects in a variety of continuous task-states [Kieliba et  ...  A new implementation of the inference now also allows for the analysis of modern, large-scale data sets, and the combined inference and analysis package, PROFUMO, is available from git.fmrib.ox.ac.uk/samh  ...  Acknowledgements We would like to offer our profound thanks to Tamar Makin for making the activestate data set available, and to Roser Sala-Llonch and Sasidar Madugular for the preprocessing.  ... 
doi:10.1101/544817 fatcat:kjn7jg3nt5fpjcjxcl4rghxryi

Typical resting state activity of the brain requires visual input during an early sensitive period [article]

Katarzyna Rączy, Cordula Hölig, Maria J. S. Guerreiro, Sunitha Lingareddy, Ramesh Kekunnaya, Brigitte Röder
2021 bioRxiv   pre-print
Here, we used functional magnetic resonance imaging to acquire blood oxygen level dependent (BOLD) resting state activity during an eyes open and an eyes closed state in congenital cataract-reversal individuals  ...  The amplitude of low frequency fluctuations (ALFF) of the BOLD signal - a neural marker of spontaneous brain activity during rest - was analyzed.  ...  We thank the technical staff of the Lucid Medical Diagnostics Banjara Hills in Hyderabad in India, in particular Balakrishna Vaddepally, for technical assistance during collection of MRI data.  ... 
doi:10.1101/2021.06.09.446724 fatcat:c2flbj7udjgsxmbrbd2itnsufy
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