ArticleFrontiers in human neuroscience2020
Signal-Space Projection Suppresses the tACS Artifact in EEG Recordings.
Article in Frontiers in human neuroscience, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Evaluating cardiac noise correction approaches for non-invasive electrophysiology of the human spinal cord.Imaging neuroscience (Cambridge, Mass.) · 2025Article
- Multisensory vs. unisensory learning: how they shape effective connectivity networks subserving unimodal and multimodal integration.Frontiers in neuroscience · 2025Article
- Stimulation artifact source separation (SASS) for assessing electric brain oscillations during transcranial alternating current stimulation (tACS).NeuroImage · 2021Article
- Investigating Nuisance Effects Induced in EEG During tACS Application.Frontiers in human neuroscience · 2021Article
- Neuromodulation of sleep rhythms in schizophrenia: Towards the rational design of non-invasive brain stimulation.Schizophrenia research · 2020Review
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5 authors.
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Abstract
backgroundTo probe the functional role of brain oscillations, transcranial alternating current stimulation (tACS) has proven to be a useful neuroscientific tool. Because of the excessive tACS-caused artifact at the stimulation frequency in electroencephalography (EEG) signals, tACS + EEG studies have been mostly limited to compare brain activity between recordings before and after concurrent tACS. Critically, attempts to suppress the artifact in the data cannot assure that the entire artifact is removed while brain activity is preserved. The current study aims to evaluate the feasibility of specific artifact correction techniques to clean tACS-contaminated EEG data. NEW
methodIn the first experiment, we used a phantom head to have full control over the signal to be analyzed. Driving pre-recorded human brain-oscillation signals through a dipolar current source within the phantom, we simultaneously applied tACS and compared the performance of different artifact-correction techniques: sine subtraction, template subtraction, and signal-space projection (SSP). In the second experiment, we combined tACS and EEG on one human subject to demonstrate the best-performing data-correction approach in a proof of principle.
resultsThe tACS artifact was highly attenuated by SSP in the phantom and the human EEG; thus, we were able to recover the amplitude and phase of the oscillatory activity. In the human experiment, event-related desynchronization could be restored after correcting the artifact. COMPARISON WITH EXISTING
methodsThe best results were achieved with SSP, which outperformed sine subtraction and template subtraction.
conclusionOur results demonstrate the feasibility of SSP by applying it to a phantom measurement with pre-recorded signal and one human tACS + EEG dataset. For a full validation of SSP, more data are needed.
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