How does a BrainYears™ assessment work?

You wear the Sens.ai headset and complete a 15-minute test using a handheld controller. During the test, symbols flash on screen and you respond by pressing buttons. While you do this, the headset captures your brain’s electrical responses — both continuous brainwave activity (EEG) and task-triggered responses called event-related potentials (ERPs) — with millisecond-level temporal resolution.

This includes how quickly you perceive information, filter distractions, classify what you see, control impulses, and detect errors — many of which are automatic neural processes that unfold in under 500 milliseconds, before conscious awareness. The system processes millions of data points into over 2,000 biomarkers, of which 643 are used in the brain age model.