Mapping entrained brain oscillations during transcranial alternating current stimulation (tACS)
| Autor: | Niels Birbaumer, Bankim Subhash Chander, Eliana Garcia-Cossio, Surjo R. Soekadar, Christoph Braun, Matthias Witkowski, Stephen E. Robinson |
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| Rok vydání: | 2015 |
| Předmět: |
0301 basic medicine
Male Cognitive Neuroscience Movement Stimulation Transcranial Direct Current Stimulation Sensitivity and Specificity 03 medical and health sciences Young Adult 0302 clinical medicine Biological Clocks medicine Humans Transcranial alternating current stimulation Physics Brain Mapping medicine.diagnostic_test Spike-timing-dependent plasticity Motor Cortex Magnetoencephalography Reproducibility of Results Cognitive artificial intelligence Neurophysiology Evoked Potentials Motor Brain Waves Brain Networks and Neuronal Communication [DI-BCB_DCC_Theme 4] 030104 developmental biology Neurology Female Entrainment (chronobiology) Neuroscience Gamma band 030217 neurology & neurosurgery Electrical brain stimulation Algorithms |
| Zdroj: | NeuroImage, 140, pp. 89-98 NeuroImage, 140, 89-98 |
| ISSN: | 1095-9572 1053-8119 |
| Popis: | Item does not contain fulltext Transcranial alternating current stimulation (tACS), a non-invasive and well-tolerated form of electric brain stimulation, can influence perception, memory, as well as motor and cognitive function. While the exact underlying neurophysiological mechanisms are unknown, the effects of tACS are mainly attributed to frequency-specific entrainment of endogenous brain oscillations in brain areas close to the stimulation electrodes, and modulation of spike timing dependent plasticity reflected in gamma band oscillatory responses. tACS-related electromagnetic stimulator artifacts, however, impede investigation of these neurophysiological mechanisms. Here we introduce a novel approach combining amplitude-modulated tACS during whole-head magnetoencephalography (MEG) allowing for artifact-free source reconstruction and precise mapping of entrained brain oscillations underneath the stimulator electrodes. Using this approach, we show that reliable reconstruction of neuromagnetic low- and high-frequency oscillations including high gamma band activity in stimulated cortical areas is feasible opening a new window to unveil the mechanisms underlying the effects of stimulation protocols that entrain brain oscillatory activity. 10 p. |
| Databáze: | OpenAIRE |
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