MRI-Guided High-Definition Transcranial Direct Current Stimulation (tDCS) for Depression

Exclusion Criteria

• •1\. Ages below 18 (neurobiology is quite different in children vs. adults)
• •2\. Ages above 65 (cortical excitability changes with age)
• •3\. Active suicidal thoughts, ideation, or behavior with plan within the past month (HDRS-17 item 3 score 3-4)
• •4\. Change in antidepressant medication within 6 weeks of study start
• •5\. Diagnosis of any medical condition potentially affecting brain function: neuropsychiatric or mental disorders, other mood disorders (bipolar disorder, primary anxiety disorder, PTSD), psychotic states or disorders, developmental disorders, neurological disorders, including mild cognitive impairment, significant head injury, significant history of alcohol/substance abuse or dependence within past 12 months, chronic pain (current, or for more than one year within the past one year), other major medical conditions (e.g., cancer, stroke).
• •6\. MRI contraindications: metal or other implants that are not MR-safe, claustrophobia, pregnancy or suspected pregnancy
• •7\. tES contraindications: skin conditions or injuries on the scalp hair extensions, wigs, braids, etc. that cannot be removed prior to the study, metal implants or pacemakers (also contraindicated for MRI)
• •8\. Non-English speakers (due to written consent and questionnaires administered)
• •9\. Neurostimulation or neuromodulation treatment for any reason within the past 3 months
• •10\. Current medication use potentially affecting brain function, including decongestants, antihistamines, benzodiazepines or other anticonvulsants, anti-psychotics.
• •11\. Prisoners will not participate in this study.