A hidden Markov model reliably characterizes ketamine-induced spectral dynamics in macaque local field potentials and human electroencephalograms. - Indie C. Garwood; Sourish Chakravarty; Jacob A. Donoghue; Meredith Mahnke; Pegah Kahali; Shubham Chamadia; Oluwaseun Akeju; Earl K. Miller; Emery N. Brown (PLoS Comput. Biol., 2021)