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A novel ring electrode setup for the recording of somatosensory evoked potentials during transcranial direct current stimulation (tDCS)

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Sehm,  Bernhard
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Clinic for Cognitive Neurology, University of Leipzig, Germany;

Hoff,  Maike
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Gundlach,  Christopher
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Taubert,  Marco
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Conde,  Virginia
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Villringer,  Arno
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Clinic for Cognitive Neurology, University of Leipzig, Germany;

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Ragert,  Patrick
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Citation

Sehm, B., Hoff, M., Gundlach, C., Taubert, M., Conde, V., Villringer, A., et al. (2013). A novel ring electrode setup for the recording of somatosensory evoked potentials during transcranial direct current stimulation (tDCS). Journal of Neuroscience Methods, 212(2), 234-236. doi:10.1016/j.jneumeth.2012.10.006.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-190B-4
Abstract
Transcranial direct current stimulation (tDCS) modulates cortical excitability thereby influencing behavior and learning. While previous studies focused on tDCS after-effects, limited information about “online” tDCS effects is available. This in turn is an important prerequisite to better characterize and/or optimize tDCS effects. Here, we aimed to explore the feasibility of recording low-artifact somatosensory evoked potentials (SEPs) during tDCS using a novel ring electrode setup. We recorded SEP before, during and after 10 min of anodal or sham tDCS using a full-band direct current (DC) EEG system in a total number of 3 subjects. SEPs were recorded in the bore of the tDCS ring electrode. Using this approach, no tDCS-induced artifacts could be observed after the application of a standard EEG filter. This new setup might help to better characterize how tDCS alters evoked brain responses thus providing novel insight into underlying physiological effects during stimulation.