Meditation for Depression

Inclusion Criteria: * Meeting the DSM-IV criteria for unipolar major depressive disorder, as assessed by the Mini-Neuropsychiatric International Interview (MINI). * HAM-D17 rating scale ≥ 14. * Prior treatment with antidepressant medication during the present major depressive episode * Adequate written and oral fluency in English to understand and complete study forms and converse with study personnel. * Willingness on part of both subject and treating clinician to not change antidepressant treatment, including medications, psychotherapy or other treatments, over the course of the study, unless necessary to provide for well being of subject. Exclusion Criteria: * Current diagnosis of schizophrenia or any psychotic disorder including psychotic depression, dysthymia, mania or bipolar disorder, attention deficit or hyperactivity disorder, generalized anxiety disorder or panic disorder, obsessive compulsive disorder, alcohol or drug dependence, mental retardation, any pervasive developmental disorder or cognitive disorder (according to DSM-IV) criteria. Those with lifetime history of psychiatric conditions other than unipolar major depression will be also excluded. * Medically unstable, delirious, or terminally ill (e.g. medical illness requiring hospitalization or intense outpatient management, such as heart disease; heart attack in the past 6 months; congestive heart failure; severe heart arrythmias; unstable hypertension; poorly controlled diabetes; or pending surgery). * Past history of skull fracture; cranial surgery entering the calvarium; space occupying intracranial lesion; stroke/ aneurysm; Parkinson's or Huntington's disease; or Multiple Sclerosis. * Participants regularly practicing (≥ 2 times per week) any of the techniques utilized in the study to reduce stress: meditation, guided imagery, yoga. * Current treatment with behavior therapy or psychotherapy. * Active suicidal plan as measured by HAM-D item 3 score of greater than or equal to 3, or history of suicide attempt during the current episode. * Utilization of cannabis or other illicit drugs more than once a month. * Excessive use of alcohol, i.e., men whose alcohol consumption exceeds 14 standard drinks per week or 4 drinks per day, and women whose alcohol consumption exceeds 7 standard drinks per week or 3 drinks per day. * Needing to adjust or change anti-depressant treatment, including medications, psychotherapy, repetitive Transcranial Magnetic Stimulation (rTMS), Electroconvulsive Therapy (ECT), or Vagus Nerve Stimulation (VNS).