Franz X. Vollenweider - Psychedelic States and The Brain: From Phenomenology to Neurophysiology

Psychedelic states are explored through the lens of neurobiology to understand their structural effects on the brain. Scientific research has established clear links between specific psychedelic substances and shifts in consciousness, which are measured using tools like the Altered States of Consciousness Rating Scale. These findings enable researchers to classify substances based on their distinct subjective impact, moving from pure phenomenological observation to grounded neurophysiology. Modern research emphasizes the role of serotonin 2A receptors in mediating these consciousness shifts, suggesting that the precise modulation of brain activity can be harnessed for therapeutic purposes. Future pharmacological developments focus on creating drugs that target these specific receptor pathways, aiming to facilitate plasticity and emotional healing while minimizing unwanted perceptual distortions.