Adapted by Ruby Jo Walker from Stephen Porges’ Polyvagal Theory

References:
Porges, S. (2022) Polyvagal theory: a science of safety. Frontiers in Integrative Neuroscience, 16.
https://doi.org/10.3389/fnint.2022.871227
Walker, R. J. (2020) Polyvagal Chart. Retrieved in 2020 from https://rubyjowalker.com