The word hallucinating conjures images of people talking to pink elephants. The reality of psilocybin is subtler, and honestly more interesting. This article explains what happens when people say they see "visuals".
Two kinds of visuals
Broadly, there are two kinds. Open-eye visuals: surfaces that breathe, patterns crawling across walls, colours becoming more saturated. And closed-eye visuals: geometric shapes and landscapes behind your eyelids. At lower doses it usually stays with the first; at higher doses the second joins in.
Where do they come from?
Psilocybin is converted in your body into psilocin, which resembles serotonin and binds to the same receptors. Your brain temporarily makes different connections and starts seeing patterns in noise.
You know it is the truffle
Unlike a real psychosis, during a truffle experience people almost always know the effects come from the substance. That awareness is one of the reasons set and setting help so much: you can remind yourself it is temporary and move with it.
Experiencing it yourself, legal and fresh
The visuals belong to the psilocybin, and in the Netherlands you explore that legally through magic truffles. Mild varieties like the Mexicana give gentle visuals; the stronger ones like the High Hawaiians far more. More on how hallucinogenic species work in hallucinogenic mushrooms explained.
This article is informational and not medical advice. Psilocybin is 18+. Not suitable with a personal or family history of psychosis or bipolar disorder, during pregnancy or breastfeeding, or with certain medication (consult your doctor first).