Abstract
Neuroplasticity, and functional connectivity are important physiological derivates of cognition, and behaviour. Recently introduced non-invasive brain stimulation techniques are suited to induce, and modulate respective physiological alterations. One of these techniques is transcranial direct current stimulation (tDCS). Its primary mechanism of action is a polarity-dependent subthreshold shift of resting membrane potentials, the after-effects of stimulation depend on the glutamatergic system. Beyond these regional effects, tDCS has been shown recently to alter cortical, as well as cortico-subcortical functional network connectivity. This talk will give an overview about the physiological effects, and will cover functional consequences of tDCS, including treatment of patients with neuropsychiatric diseases. Finally, it will be shown how alterations of functional oscillatory connectivity via transcranial alternating current stimulation can modify cognitive performance.
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