Transcranial direct current stimulation (tDCS)
CORTEX
In sessions 2, 3, and 4, and after measuring the cognitive function and MIVC, participants received one of the three tDCS conditions (M1, DLPFC, and sham tDCS) in a randomized order. Participants and the outcome assessor were blinded regarding the type of stimulation in each session (double-blind design). A battery-driven stimulator (NeuroStim 2, Medina Tebgostar, Tehran, Iran) was used to apply tDCS with 2 mA for 20 min. Two carbon electrodes (4 × 5 cm; 20 cm
The magnitude and radial component of the electric field induced by tDCS montages. Analysis of tDCS-induced strength and radial (normal to the cortical surface) component of the electric field (EF) using a head model (MNI152) developed from magnetic resonance imaging. Electrode montages targeting anodal tDCS in the left dorsolateral prefrontal cortex (panels 