Transcranial Alternate Current Stimulation (tACS) is similar to tDCS as a neuromodulatory technique, but instead of applying a direct electrical current, tACS oscillates a sinusoidal current at a chosen frequency to interact with the brain’s natural cortical oscillations.
Transcranial Alternate Current Stimulation (tACS) is one of the non-invasive neuromodulation interventions used at NCI. We often use this intervention together with active forms of neuromodulation such as EEG neurofeedback. The combination of these two forms of neuromodulation helps decrease the amount of treatment time need to treat neuropsychiatric disorder such as chronic pain, depression, anxiety and insomnia. Combining and active intervention with a passive modality such as tACS makes the changes in the cortex permanent so ongoing treatment is not necessary.
This short video will explain more about this treatment