Prefrontal Stimulation Amplifies Placebo Mood Response in Depression

Repetitive transcranial magnetic stimulation and its more time-efficient variant, intermittent theta burst stimulation, are established interventions for treatment-resistant depression [1, 2]. While these neuromodulation techniques demonstrate clear efficacy in reducing depressive symptoms, the degree of response often varies significantly between patients [3, 4]. Clinical outcomes in depression are frequently influenced by nonspecific factors, including the patient's expectations of improvement, which contribute to the observed placebo effect [5]. Identifying the specific neural circuits that mediate these expectancy-driven mood changes remains a challenge for clinicians seeking to optimize treatment protocols. A recent randomized clinical trial investigates how targeted stimulation of prefrontal regions may directly influence these internal belief systems and their subsequent impact on mood, offering insights into how physicians might eventually harness the placebo response to augment clinical care.