Psychedelics (e.g., LSD, psilocybin)

Psychedelics like LSD and psilocybin are substances that alter perception, mood, and thought processes by affecting the brain's serotonin systems. They can produce vivid visual and sensory changes, altered sense of time, and profound shifts in consciousness. Used historically in spiritual or therapeutic contexts, they can also pose risks such as anxiety or unpredictable psychological effects. Research is ongoing into their potential to treat mental health conditions, but they remain illegal in many places due to safety concerns. Overall, psychedelics influence how the brain interprets sensory information and emotional states, leading to unique experiences that are both complex and deeply personal.