Effects of external stimulation on psychedelic state neurodynamics Pedro A.M. Mediano, Fernando E. Rosas, Christopher Timmermann, Leor Roseman, David J. Nutt, Amanda Feilding, Mendel Kaelen, Morten L. Kringelbach, Adam B. Barretti, Anil K. Seth, Suresh Muthukumaraswamy, Daniel Bor, and Robin L. Carhart-Harris bioRxiv preprint, 2020 doi : 10.1101/2020.11.01.356071   Abstract Recent findings have shown that psychedelics reliably enhance brain entropy (understood as neural signal diversity), and this effect has been associated with both acute and long-term psychological outcomes such as personality changes. These findings are particularly intriguing given that a decrease of brain entropy is a robust indicator of loss of consciousness (e.g. from wakefulness to [...]