NeuroVIZR flickering light stimulates the visual system in a unique way that produces vivid internal colors and patterns, even with closed eyes.

How the Eye Responds to Flickering Light

When light passes through closed eyelids, tissue filters out most blue and green wavelengths — almost all red wavelengths make it through to the retina.

Rods, Cones, and Internal Vision

Once light converts into electro-chemical signals, the signal traveling along your nerves is no longer "light" — it's electrical activity processed by the brain, which is why colors can appear even with eyes closed.