REBUS, an acronym of Relaxed Beliefs Under pSychedelics, is a model of affect concerning serotonergic psychedelics, associated with the theories of Karl Friston and Robin Carhart-Harris.
References
Further reading Meijer, Andy (2020-01-02). "The Rebus model: Understanding psychedelics' effects on the mind". Retrieved 13 August 2025. Safron, Adam; Juliani, Arthur; Reggente, Nicco; Klimaj, Victoria; Johnson, Matthew (2025). "On the varieties of conscious experiences: Altered Beliefs Under Psychedelics (ALBUS)". Neuroscience of Consciousness. 2025 (1) niae038. doi:10.1093/nc/niae038. PMC 11823823.