Effects of Transcranial Electrical Stimulation in Chronic Stress

For true tDCS, the technique will be performed with the anode over the right dorsolateral prefrontal cortex and the cathode over the left dorsolateral prefrontal cortex, positioned at F4 and F3, respectively, according to the International 10/20 Electrode Placement System. The current intensity will be set to 2 milliamperes (mA) for 20 minutes over five consecutive days.

For true tVNS stimulation, the technique will be performed with the electrodes positioned on the upper concha of the left ear, using gel for better current distribution.