Effect Categories - Geometric patterns

Geometric patterns are defined as any subjective effect that introduces complex arrays of shapes, colours, symbols, patterns, geometry, form constants, and fractals to one's field of vision.

Within the context of psychedelic substances, effects within this category are often speculated to not simply be another form of hallucination, but instead a result of neurological signals and processes from various regions of the brain bleeding into the visual cortex and being reinterpreted as complex geometric forms.

This page lists the various auditory effects that can occur under the influence of certain psychoactive compounds.