From pupil to the brain: New insights for studying cortical plasticity through pupillometry.
Level 5 - mechanism / opinion, no new human data
Narrative review of mechanistic literature without systematic methodology
PubMed 37063384 · doi:10.3389/fncir.2023.1151847
What was done
This narrative review synthesizes literature exploring pupillometry as a non-invasive, translational tool to evaluate cortical plasticity. It summarizes evidence on the locus coeruleus-norepinephrine (LC-NE) system's role in controlling pupil dynamics and mediating brain plasticity in preclinical and human research.
What was found
The abstract reports no quantitative data or statistical findings. It outlines theoretical and qualitative links between pupil diameter variations, locus coeruleus norepinephrine release, and the assessment of residual cortical plasticity and nervous system activation states.
Why it matters
Pupillometry may provide an accessible, translational biomarker for tracking noradrenergic system activity and estimating residual cortical plasticity in healthy and disordered brains.
Limits
The abstract contains no original data, sample size details, or systematic search methodology. Pupillometry is an indirect index of central noradrenergic tone rather than a direct measurement of synaptic plasticity.
Cited by
- supports Pupil diameter increases in response to increased cognitive load, heightened arousal, and higher levels of alertness.