Transcranial alternating current stimulation: a review of the underlying mechanisms and modulation of cognitive processes

Brain oscillations of different frequencies have been associated with a variety of cognitive functions. Convincing evidence supporting those associations has been provided by studies using intracranial stimulation, pharmacological interventions and lesion studies. The emergence of novel non-invasive...

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Veröffentlicht in:Frontiers in human neuroscience Jg. 7; S. 279
Hauptverfasser: Herrmann, Christoph S., Rach, Stefan, Neuling, Toralf, Strüber, Daniel
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Switzerland Frontiers Research Foundation 2013
Frontiers Media S.A
Schlagworte:
alpha
beta
Brain
Cognition & reasoning
Cognitive ability
Decision making
EEG
gamma
Magnetic fields
Neuroscience
Oscillations
Physiology
Transcranial Magnetic Stimulation
Wavelet transforms
Germany
EEG
alpha
transcranial alternating current stimulation
transcranial magnetic stimulation
oscillations
electroencephalogram
gamma
transcranial direct current stimulation
ISSN:1662-5161, 1662-5161
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Zusammenfassung:Brain oscillations of different frequencies have been associated with a variety of cognitive functions. Convincing evidence supporting those associations has been provided by studies using intracranial stimulation, pharmacological interventions and lesion studies. The emergence of novel non-invasive brain stimulation techniques like repetitive transcranial magnetic stimulation (rTMS) and transcranial alternating current stimulation (tACS) now allows to modulate brain oscillations directly. Particularly, tACS offers the unique opportunity to causally link brain oscillations of a specific frequency range to cognitive processes, because it uses sinusoidal currents that are bound to one frequency only. Using tACS allows to modulate brain oscillations and in turn to influence cognitive processes, thereby demonstrating the causal link between the two. Here, we review findings about the physiological mechanism of tACS and studies that have used tACS to modulate basic motor and sensory processes as well as higher cognitive processes like memory, ambiguous perception, and decision making.
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Reviewed by: Jack Van Honk, Utrecht University, Netherlands; Paul Sauseng, University of Surrey, UK
Edited by: Risto J. Ilmoniemi, Aalto University, Finland
ISSN:1662-5161
1662-5161
DOI:10.3389/fnhum.2013.00279