Researchers have discovered a way to consistently induce the same visual hallucination in healthy people - without drugs.
The DIY trip can be induced from anywhere by watching a short video, and causes people to all see the same hallucination - moving grey blobs.
That means scientists can begin to study exactly what causes hallucinations in the brain, and how to treat them in people with conditions such as Parkinson's disease.
And, yes, you can try it for yourself. Just scan the QR code to watch, although it is recommended that anyone with a history of migraines, epilepsy or psychiatric disorders avoid it.
