Transcranial direct-current stimulation

Technique of brain electric stimulation therapy

Transcranial direct current stimulation (tDCS) is a form of neuromodulation that uses constant, low direct current delivered via electrodes on the head. It was originally developed to help patients with brain injuries or neuropsychiatric conditions such as major depressive disorder. It can be contrasted with cranial electrotherapy stimulation, which generally uses alternating current the same way, as well as transcranial magnetic stimulation.

Research shows increasing evidence for tDCS as a treatment for depression. There is mixed evidence about whether tDCS is useful for cognitive enhancement in healthy people. There is no strong evidence that tDCS is useful for memory deficits in Parkinson's disease and Alzheimer's disease, non-neuropathic pain, nor for improving arm or leg functioning and muscle strength in people recovering from a stroke. There is emerging supportive evidence for tDCS in the management of schizophrenia - especially for negative symptoms.


tDCS efficacy in medical use


In 2015, the British National Institute for Health and Care Excellence (NICE) found tDCS to be a safe and effective treatment modality for depression, though further investigation was needed. Since then, several studies and meta-analyses have demonstrated tDCS to be a safe and effective treatmen... more

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