Mental Hallucinations

When using certain hallucinogenic substances, these visual neuronal circuits become overactive. As a result, we can see shapes in our minds that are not present in external reality, such as repetitive patterns that change slowly. Existing, perceived shapes are also experienced with exaggerated intensity due to the overactivation of visual brain regions under the influence of pharmacological substances. Psychedelic drugs intensify pre-existing properties of the nervous system, causing certain figures to be experienced more strongly. Certain intense lines, Moiré effects, and slowly changing patterns arise from the activation of memory content at a basal brain level. Some patterns have almost mathematically perfect geometric shapes.

From this, we can conclude the following: These visual properties are —in their origin— already present in the nervous system. The recognition of basic patterns is therefore physically built into the structural cooperation within the neuronal circuits of our brain. It is an intrinsic property of the ‘wiring’ in the brain. The blueprint of this 'geometrical' wiring is likely genetically encoded in our DNA.
The ability to accurately recognize simple patterns from multiple perspectives is part of the IQ test that children undergo during their education.

Image: Form Constants that can be retained in our memory with or without psychedelic drugs.
Psychedelic drugs will amplify the perception of these forms in the mind's eye.
It can distort your vision of your external reality as well as your internal reality.