Overview of Transcranial Brain Stimulation Devices – TMS, TDCS, TRNS

Transcranial Magnetic Stimulation (TMS) and Transcranial Direct Current Stimulation (TDCS) are both non-invasive methods for stimulating parts of the brain. TMS and TDCS are active neuro devices, in the sense that they change the firing rates and activity levels of neurons, and groups of neurons in the brain. Major differences between TMS and TDCS are described below.