In this project, we investigate resting-state fMRI connectivity of different pharmacologically and non-pharmacologically induced altered states of consciousness. These include, among others, states induced by psychedelics, amphetamines, THC, sleep and flicker light stimulation. Our analyses will shed light on the similarities and differences between different modes of altered state induction. In addition, we aim to reveal common neural patterns relating to specific subjective experience profiles. In accordance with the FAIR-principles of Open Science, all data will be shared online. This project is a collaboration with Timo Torsten Schmidt, Till Nierhaus and Ana Deutsch from the Neurocomputation and Neuroimaging Unit (NNU) at Freie Universität Berlin.