The Effect of Music & Auditory Beat Stimulation on Anxiety
Background: Music and auditory beat stimulation (ABS) in the theta frequency range (4-7 Hz) are sound-based anxiety interventions that have received empirical support. Here, the anxiety-reducing potential of calm music combined with theta ABS was examined in a large sample of participants taking anti-anxiety medication. Method: Participants (n = 318) were randomly assigned to one of four separate experimental sessions: combined (music & ABS), music-alone, ABS-alone, and pink noise. Pre- and post-intervention somatic and cognitive state anxiety measures were collected along with trait anxiety, personality measures and musical preferences. Results: Among participants with moderate trait anxiety, we observed reductions in somatic anxiety that were greater in combined and music-alone conditions than in the pink noise condition; and reductions in cognitive state anxiety that were greater in the combined condition than in the music-alone, ABS-alone, and pink noise conditions. While we also observed reductions in somatic and cognitive state anxiety in participants with high trait anxiety, the conditions were not well differentiated. Conclusions: Sound-based interventions are effective in reducing somatic and cognitive state anxiety. For participants with moderate trait anxiety, combined conditions were most efficacious.