This academic study investigates how MRI-compatible transcranial direct current stimulation (tDCS) over the left dorsolateral prefrontal cortex (DLPFC) influences stress regulation and episodic future thinking in healthy volunteers. Participants undergo one MRI session: combining stress induction, tDCS (real or sham), and functional and metabolic MRI measurements. The study aims to better understand how non-invasive brain stimulation affects the neurophysiological and psychological mechanisms involved in stress processing and future-oriented thinking.