tACS Treatment for Cognitive Impairments in Methamphetamine Addicts

The target 'active' electrode was placed over the MFC and the second 'return' electrode was placed over the medial parietal cortex. 6 Hz stimulation was used and a alternating current of 2mA was applied for 30min each day(Monday-Friday) for 3consecutive weeks

The target 'active' electrode was placed over the MFC and the second 'return' electrode was placed over the medial parietal cortex. 10 Hz stimulation was used and a alternating current of 2mA was applied for 30min each day(Monday-Friday) for 3 consecutive weeks

Sham stimulation lasted 30 s (15 s of ramp- up and 15 s of ramp-down).