Ventral vagal state is the socially engaged, safe-and-settled state at the connection end of the range, in the polyvagal model.
It is a model, not settled physiology and not a claim the table produces a ventral state as a medical outcome. Presence, ease, and the ability to connect are the session signs. Outcomes vary and are not guaranteed.
Clients feel here and with. If they cannot, that is the signal.