Here[0] is a blog post by someone who identified it as playing a part in a severe case of selective mutism that deeply impacted their professional ambitions. The description is interwoven with a narrative of their time at some sort of week-long retreat, but there are sections (mostly in italics, as they're memories) that describe the mutism, their efforts to identify its source, their learning about the vagus nerve interactions, and the takeaways about the vagus nerve and its role in their experience.

[0]: https://fortelabs.com/blog/groundbreakers/