A Polyvagal Approach for Connection, Change, and Healing The Safe and Sound Protocol (SSP) is a groundbreaking therapy based in Polyvagal Theory, which looks at the role the autonomic nervous system and vagus nerve play in regulating health and behavior. SSP involves listening to music that’s been filtered to prioritize frequencies of human speech, providing auditory input that enables the nervous system to reset to its homeostatic state.
