Looking at 40 Hz flickering light is generally safe but can induce seizures in individuals prone to epilepsy. — Whalespan
Looking at 40 Hz flickering light is generally safe but can induce seizures in individuals prone to epilepsy.
⚠ High risk
The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
◐PARTIALLYSUPPORTED
⚠
High-risk intervention — consult a physician before acting.Drug-drug interactions, dose-dependence, and screening contraindications apply.
“Is it dangerous to look at a 40-hertz flickering light? Well, in general, the answer is going to be no. However, if you're prone to epilepsy, for instance, staring at a flickering light of a given continuous frequency can induce seizure, right?”