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IAVSA Training Remains the Voice Stress Industry’s Best Value — New Pricing Begins January 1, 2027: Basic Course $895 | Recertification $495 — Next Online Recertification Class: August 2026 — Reminder: IAVSA Does Not Sell or Provide Equipment for Training Classes

The polyvagal theory: phylogenetic substrates of a social nervous system; International journal of psychophysiology, official journal of the International Organization of Psychophysiology

Oct 1, 2001
1 min read

Updated: Nov 21, 2024

https://pubmed.ncbi.nlm.nih.gov/11587772/

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