Developed by Stephen Porges, and based on his Polyvagal Theory, SSP was devised after extensive research on heart rhythms and the impact of hearing. Porges found that through listening to the right sound frequencies, profound changes in mood and emotional wellbeing can occur. After your SSP listening sessions you will feel safer and your flight/fight response will be less activated. Over time, you will be better able to learn, engage and self-regulate.