The goal of this clinical trial is to understand how patient education surrounding a one-time, consciousness-altering medical intervention impacts the antidepressant response to the intervention in adults with major depressive disorder. In this study, the consciousness-altering medical intervention is a single infusion of propofol, an intravenous anesthetic which might have antidepressant properties. The main question this study aims to answer is: Does the focus of patient education influence the antidepressant response to a single intravenous infusion of propofol? Researchers will compare response-focused vs. diagnosis-focused education. Qualifying participants will: * Undergo a single intravenous infusion of propofol which will induce a temporary state of sedation * Wear an EEG cap that records brain activity during sedation * Be randomized to receive either response-focused or diagnosis-focused education about their brain signals after they recover from sedation * Be asked to fill out surveys about their mood and other measures of well-being before and after treatment
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Depression severity
Timeframe: From enrollment to 28 days after treatment