BackgroundThe current study evaluated Sonic Augmentation Technology™ (SAT), a novel, Polyvagal-informed probe that incorporates continuously varying and acoustic features modeled on patterns of autonomic regulation into musical soundscapes. Specifically, the study examined whether SAT led to improvements in self-reported biobehavioral state (e.g. relaxation, breathing slowly, interoceptive clarity), and whether individuals with poorer baseline functioning (i.e., increased autonomic reactivity an