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Inherent physiological artifacts in EEG during tDCS

Nigel Gebodh, Zeinab Esmaeilpour, Devin Adair, Kenneth Chelette, Jacek Dmochowski, Adam J. Woods, Emily S. Kappenman, Lucas C. Parra, Marom Bikson
2019 NeuroImage  
Physiological artifacts, as defined here, would emerge only during tDCS, thus processing techniques typically applied to EEG in the absence of tDCS would not be suitable for artifact removal during tDCS  ...  Critically, we identify inherent physiological artifacts which are present in all online EEG-tDCS: 1) cardiac distortion and 2) ocular motor distortion.  ...  HIGHLIGHTS: • We identify inherent physiological artifacts during concurrent (online) tDCS-EEG decayed in voltage over a 50 sec period.  ... 
doi:10.1016/j.neuroimage.2018.10.025 pmid:30321643 pmcid:PMC6289749 fatcat:z6fqmtfgszc2jgoz3wwlvwsoay

Network-level mechanisms underlying effects of transcranial direct current stimulation (tDCS) on visuomotor learning

Pejman Sehatpour, Clement Donde, Matthew J. Hoptman, Johanna Kreither, Devin Adair, Elisa Dias, Blair Vail, Stephanie Rohrig, Gail Silipo, Javier Lopez-Calderon, Antigona Martinez, Daniel C. Javitt
2020 NeuroImage  
Here, we evaluated potential network-level effects of tDCS during the Serial Reaction Time Task (SRTT) using convergent EEG- and fMRI-based connectivity approaches.  ...  Overall, these findings demonstrate objective physiological effects of tDCS at the network level that result in effective behavioral modulation when tDCS parameters are matched to network-level requirements  ...  We would also like to acknowledge the assistance of Chintan Shah and Heloise De Baun in various stages of this project.  ... 
doi:10.1016/j.neuroimage.2020.117311 pmid:32889116 pmcid:PMC7778833 fatcat:lqvh7wciajfpphzbtcnxunudra

Epileptic Seizure Detection and Experimental Treatment: A Review

Taeho Kim, Phuc Nguyen, Nhat Pham, Nam Bui, Hoang Truong, Sangtae Ha, Tam Vu
2020 Frontiers in Neurology  
In particular, we explain the fundamentals of brain stimulation approaches, including (1) transcranial magnetic stimulation (TMS), (2) transcranial direct current stimulation (tDCS), (3) transcranial focused  ...  Seizures can be detected by monitoring the brain and muscle activities, heart rate, oxygen level, artificial sounds, or visual signatures through EEG, EMG, ECG, motion, or audio/video recording on the  ...  (84) arranged a cascade of three adaptive filters to remove multiple artifacts and got the EEG signal from EEG + artifacts (EOG, ECG, and power-line frequencies).  ... 
doi:10.3389/fneur.2020.00701 pmid:32849189 pmcid:PMC7396638 fatcat:dnnl7tyninc6zkqciwmuwo3esu

Can Daytime Transcranial Direct Current Stimulation Treatment Change the Sleep Electroencephalogram Complexity of REM Sleep in Depressed Patients? A Double-Blinded, Randomized, Placebo-Controlled Trial

Zhe Li, Xueli Zhao, Lingfang Feng, Yu Zhao, Wen Pan, Ying Liu, Ming Yin, Yan Yue, Xiaojia Fang, Guorui Liu, Shigeng Gao, Xiaobin Zhang (+3 others)
2022 Frontiers in Psychiatry  
Study ObjectivesThe purpose of this study was to determine the effects of daytime transcranial direct current stimulation (tDCS) on sleep electroencephalogram (EEG) in patients with depression.MethodsThe  ...  Eight intrinsic mode functions (IMFs) were computed from each EEG signal in a channel.  ...  Thus, we sought to determine if use of tDCS during the daytime improve Sleep EEG complexity at night in depressed patients?  ... 
doi:10.3389/fpsyt.2022.851908 pmid:35664468 pmcid:PMC9157570 fatcat:re6al65o2zhvxmn5i3rb544som

Rigor and reproducibility in research with transcranial electrical stimulation: An NIMH-sponsored workshop

Marom Bikson, Andre R. Brunoni, Leigh E. Charvet, Vincent P. Clark, Leonardo G. Cohen, Zhi-De Deng, Jacek Dmochowski, Dylan J. Edwards, Flavio Frohlich, Emily S. Kappenman, Kelvin O. Lim, Colleen Loo (+12 others)
2018 Brain Stimulation  
Results: Advances in understanding mechanisms, methodological and technological improvements (e.g., electronics, computational models to facilitate proper dosing), and improved clinical trial designs are  ...  Conclusions: These recommendations align with requirements in NIMH funding opportunity announcements to, among other needs, define dosimetry, demonstrate dose/response relationships, implement rigorous  ...  Acknowledgments This work was supported in part by grants P20GM109089 from the National Institute of General Medical Medical Sciences to JDR and by R01HD069776 from the National Institute of Child Health  ... 
doi:10.1016/j.brs.2017.12.008 pmid:29398575 pmcid:PMC5997279 fatcat:u6xrrduj65hhjjoqdkriz27rxa

Neuroergonomics for Aviation [chapter]

Daniel E. Callan, Frédéric Dehais
2019 Neuroergonomics  
combination of high resolution and lower resolution portable brain imaging techniques as well as non-invasive brain stimulation the goal of ACES is to determine brain processes underlying complex behavior during  ...  Neuroergonomics is the study of how the brain functions in real-world situations with the goal of developing technology to enhance human performance.  ...  It has been demonstrated that dry-wireless EEG can be utilized in motion platform simulated and real in-flight aviation related situations despite the considerable inherent vibration and noise.  ... 
doi:10.1016/b978-0-12-811926-6.00009-9 fatcat:g3hnrdtogjgyxn5t7dy4cfegqm

Transcranial Electrical Currents to Probe EEG Brain Rhythms and Memory Consolidation during Sleep in Humans

Lisa Marshall, Roumen Kirov, Julian Brade, Matthias Mölle, Jan Born, Clayton Dickson
2011 PLoS ONE  
Theta-tDCS during NonREM sleep produced a global decrease in slow oscillatory activity conjoint with a local reduction of frontal slow EEG spindle power (8-12 Hz) and a decrement in consolidation of declarative  ...  In contrast, during REM sleep theta-tDCS appears to increase global gamma (25-45 Hz) activity, indicating a clear brain state-dependency of theta-tDCS.  ...  Koller from the Electronics Facility at the University of Lübeck for help in designing the stimulation apparatus, R. Krebs and S. Uyanik for technical assistance.  ... 
doi:10.1371/journal.pone.0016905 pmid:21340034 pmcid:PMC3038929 fatcat:wk4rnqe4kjerzd7xxshxc63qvy

Imaging artifacts induced by electrical stimulation during conventional fMRI of the brain

Andrea Antal, Marom Bikson, Abhishek Datta, Belen Lafon, Peter Dechent, Lucas C. Parra, Walter Paulus
2014 NeuroImage  
TDCS induced signals in both superficial and deep structures. The signal was specific to the electrode montage, with the strongest signal near cerebrospinal fluid (CSF) and scalp.  ...  To test whether these currents can affect concurrent fMRI recordings we performed conventional gradient echo-planar imaging (EPI) during transcranial direct current (tDCS) and alternating current stimulation  ...  To estimate the magnitude of the EPI artifact relative to a normal physiological BOLD response we compared the raw EPI signal (see Methods) during tDCS to a conventional finger tapping task using the identical  ... 
doi:10.1016/j.neuroimage.2012.10.026 pmid:23099102 pmcid:PMC3759658 fatcat:2hccl2juwvbhbpvyuos7oznll4

Effect of tDCS stimulation of motor cortex and cerebellum on EEG classification of motor imagery and sensorimotor band power

Irma N. Angulo-Sherman, Marisol Rodríguez-Ugarte, Nadia Sciacca, Eduardo Iáñez, José M. Azorín
2017 Journal of NeuroEngineering and Rehabilitation  
stimulation modalities: 1) 10-minutes anodal tDCS before EEG acquisition over right-hand or 2) feet motor cortical area, and 3) 4-seconds anodal tDCS during EEG acquisition either on right-hand or feet  ...  Transcranial direct current stimulation (tDCS) is a technique for brain modulation that has potential to be used in motor neurorehabilitation.  ...  Funding This research has been carried out in the framework of the project Associate -Decoding and stimulation of motor and sensory brain activity to support long term potentiation through Hebbian and  ... 
doi:10.1186/s12984-017-0242-1 pmid:28420382 pmcid:PMC5395900 fatcat:xmu63jxpnvhvdnononb4cpfta4

Effects of Transcranial Electrical Stimulation on Human Auditory Processing and Behavior—A Review

Yao Wang, Limeng Shi, Gaoyuan Dong, Zuoying Zhang, Ruijuan Chen
2020 Brain Sciences  
In recent years, tES has proven its value in studying the neural processes involved in human behavior.  ...  Therefore, we reviewed the neuromodulatory effect of tES on auditory processing, behavior, and cognitive function and have summarized the physiological effects of tES on the auditory cortex.  ...  artifact rejection methods to identify neural oscillations during stimulation [123, 124] .  ... 
doi:10.3390/brainsci10080531 pmid:32784358 fatcat:m7qogqbvjnb6dlhwkc6fzrtslq

Wearable functional near infrared spectroscopy (fNIRS) and transcranial direct current stimulation (tDCS): expanding vistas for neurocognitive augmentation

Ryan McKendrick, Raja Parasuraman, Hasan Ayaz
2015 Frontiers in Systems Neuroscience  
The effects of tDCS on complex task performance and the use of fNIRS for monitoring cognitive workload during task performance are described.  ...  and in naturalistic conditions.  ...  For a review of neuroimaging artifacts and limitations during simultaneous tDCS and fMRI, see Saiote et al. (2013) and Antal et al. (2014) .  ... 
doi:10.3389/fnsys.2015.00027 pmid:25805976 pmcid:PMC4353303 fatcat:uxgrcgkr6vhe7cpnppgpxt4ic4

Neuromodulation complementary to physiotherapy in fibromyalgia and its electroencephalographic correlates: a randomized clinical trial protocol

Géssika Araújo de Melo, Eliane Araújo de Oliveira, Suellen Mary Marinho dos Santos Andrade, Nelso Torro
2020 Research, Society and Development  
present research is to present a protocol for a randomized, placebo-controlled triple-blind clinical trial, which will evaluate the effects of neuromodulation with transcranial direct current stimulation (tDCS  ...  in the left dorsolateral prefrontal cortex and cathodic stimulation in the right supraorbital region; and Group 3, with simulated type stimulation (sham).  ...  region during data acquisition to reduce the presence of artifacts.  ... 
doi:10.33448/rsd-v9i9.6799 fatcat:ogq3eog5qjforcuvsorhcdmis4

Entrainment of Perceptually Relevant Brain Oscillations by Non-Invasive Rhythmic Stimulation of the Human Brain

Gregor Thut, Philippe G. Schyns, Joachim Gross
2011 Frontiers in Psychology  
This bias in favor of sensory stimulation is due to the added complexity of dealing with electrically or magnetically induced artifacts during TMS, tACS, or o-tDCS, which is leading to rhythmic contaminations  ...  EEG evidence for entrainment during TMS, tACS, or o-tDCS is only starting to emerge (see Electrophysiological evidence below).  ...  Conflict of Interest Statement: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest  ... 
doi:10.3389/fpsyg.2011.00170 pmid:21811485 pmcid:PMC3142861 fatcat:xpd2q7qwujbvfjaoiw2znmotee

Methodology for tDCS integration with fMRI [article]

Zeinab Esmaeilpour, A. Duke Shereen, Peyman Ghobadi-Azari, Abhishek Datta, Adam J Woods, Maria Ironside, Jacinta O'Shea, Ulrich Kirk, Marom Bikson, Hamed Ekhtiari
2019 biorxiv/medrxiv   pre-print
during specific tasks; and act as an outcome measure of functional response to tDCS.  ...  Finally, we discuss the importance of conducting tDCS-fMRI with stimulation equipment certified as safe to use inside the MR scanner, and of correcting for image artifacts caused by tDCS. tDCS-fMRI can  ...  These include: MRI-compatible stimulator setup, choice of RF coil, electrode hydration, stray fields induced from tDCS wires, and disambiguating physiological signal from tDCS artifacts in the fMRI data  ... 
doi:10.1101/19006288 fatcat:ldxanoquqjggnf7osgfhgcrs6u

Animal models of transcranial direct current stimulation: Methods and mechanisms

Mark P. Jackson, Asif Rahman, Belen Lafon, Gregory Kronberg, Doris Ling, Lucas C. Parra, Marom Bikson
2016 Clinical Neurophysiology  
The relevance of morphological changes (galvanotropy) to tDCS is also considered, as we suggest microscopic migration of axon terminals or dendritic spines may be relevant during tDCS.  ...  improve tDCS.  ...  A central theme in this review is the physiological effects of tDCS can be understood using animal models by characterizing the membrane polarization induced during stimulation.  ... 
doi:10.1016/j.clinph.2016.08.016 pmid:27693941 pmcid:PMC5083183 fatcat:zyieb7orezaijmcvd7wasy7qam
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