Functional anatomy of the vagus system: How does the polyvagal theory comply?
Level 5 - mechanism / opinion, no new human data
Narrative review evaluating anatomical concepts without new empirical human data
PubMed 36100134 · doi:10.1016/j.biopsycho.2022.108425
What was done
The authors reviewed the functional neuroanatomy of the vagus nerve and its central brainstem connections in the context of biopsychological frameworks, specifically discussing anatomical evidence relevant to polyvagal theory and heart rate variability metrics.
What was found
The abstract reports no quantitative data. Anatomically, vagal afferent targets include the spinal trigeminal and paratrigeminal nuclei alongside classical brainstem nuclei (dorsal motor nucleus, nucleus ambiguus, and nucleus tractus solitarii), and the nucleus tractus solitarii integrates both visceral and somatic afferent signals.
Why it matters
Recalling precise functional neuroanatomy provides an empirical benchmark to evaluate whether popular biopsychological concepts, such as polyvagal theory, align with established neural wiring.
Limits
The abstract describes a narrative theoretical review with no empirical human dataset, sample size, or systematic literature search methodology reported.
Cited by
- context The mammalian vagus nerve is neuroanatomically linked to the cranial nerves controlling facial expression and vocal intonation.