This app flashes the entire screen at a chosen frequency. Flashing light in the 3–60 Hz range can trigger seizures in people with photosensitive epilepsy — even in those with no prior history. High contrast, full-screen flashing and the color red increase the risk.
Do not use if you have epilepsy, a history of seizures, or are unsure. Stop immediately if you experience dizziness, altered vision, eye or muscle twitching, disorientation, or nausea.
The 40 Hz "gamma" protocol is an experimental research approach (MIT Picower Institute). It is not an approved treatment for any condition. This tool is for personal experimentation only and provides no medical benefit guarantee.