The Safe and Sound Protocol (SSP) is an auditory intervention developed by Dr Steven Porges based on his polyvagal theory. The SSP is a vagal nerve stimulator and can support nervous system regulation for children and adults who anxiety, auditory sensitivity, are stuck in fight flight freeze or have a history of trauma.

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The SSP is a home program that is supported by a therapist. It is a program that parents can do with their child to support their nervous system which allows them to access their other therapies more effectively.​