
10/12/2024
As I make my way back to Canada, I find myself contemplating a pattern of the past week. On at least three separate occasions, I was asked what I was doing in Austin. I replied, “taking a course on trauma.” Each time the response was the same: “oh, you must be a nurse or a doctor!”
Interestingly, I didn’t meet one nurse or doctor at the course. We were mostly a group of mental health professionals or bodyworkers. I don’t mind correcting the assumptions about my work. It’s a good practice in humility, and opens the door for me to talk about what trauma is, how it extends so much further than the ER, and what we can do about it.
During the past week of studying trauma, one of the most impactful lessons for me was about the polyvagal system. If you’re interested in neuroscience and/or trauma, keep reading!
When a healthy nervous system perceives danger, the first thing that that we do is look for human connection. If we scan our environment and don’t see someone offering us loving reassurance, then we are likely to resort to a more primitive state of fight or flight. In a healthy nervous system, fighting or fleeing is not the default defence. Finding safety in human connection is our default defence, which we are capable of doing thanks to our evolutionarily advanced ventral vagal nervous system.
We are, by design, wired for connection. From the moment we are born, our survival depends on our ability to connect with our caregivers. One of the ways we do this is by learning how to read their facial expressions. Facial expressions are controlled by a collection of cranial nerves that are part of the ventral vagal system. Now here’s the interesting part: the nerves of the ventral vagal system are myelinated, allowing for faster and more nuanced nerve transmission than the non-myelinated counterparts of the fight/flight system. One of the fastest and most effective ways for us to determine whether or not we are safe is to see it on another person’s face (or hear it in their voice).
Safety through human connection is our birthright, and a lack of it, especially in infancy - a type of trauma called developmental or relational trauma - can compromise our ability to regulate our stress response and relate well to others.