Alpha and Theta Audiovisual Interventions in a Reflective Chamber Demonstrate Acute Effects on Stress and Burnout

Escalating stress prevalence, particularly among essential service personnel whose cognitive compromise threatens public welfare, necessitates rapid, accessible, and non-pharmacological interventions. This pilot investigation (n=74) evaluated audiovisual stimulation delivered through an immersive reflective chamber (MindGym) as an acute stress mitigation strategy for high-burnout-risk populations. Participants underwent randomized assignment to alpha (9-11Hz) or theta (4-7Hz) frequency protocols combining synchronized binaural beats with stroboscopic light during an 11-minute active intervention. Both protocols demonstrated substantial therapeutic efficacy without adverse events. State anxiety reduction (STAI) achieved magnitudes comparable to established pharmacological and psychotherapeutic interventions requiring significantly longer treatment durations. Depression, tension, and negative affect showed similarly robust improvements, while flow states and subjective vitality were significantly enhanced. Moderation analyses revealed protocol-specific responsiveness patterns: alpha stimulation yielded universal stress reduction independent of baseline psychological state, whereas theta selectively enhanced purpose-in-life among participants with elevated mood disturbance, suggesting phenotype-guided optimization potential. These findings establish feasibility and preliminary efficacy for rapid stress management in operationally demanding contexts.