What your tears could reveal about your brain

A few tears may someday reveal important clues about a person’s neurological health. Researchers reporting in ACS Omega developed a low-cost electrochemical sensor designed to detect dopamine, a neurotransmitter involved in movement, learning, motivation, and emotional regulation. They tested the device using artificial human tears, where it accurately detected a range of dopamine concentrations. The technology could support the development of new tools for monitoring Parkinson’s disease and other conditions linked to atypical dopamine levels.

Raccontata daeurekalert.org