Fig. 1

Onset of sedation and Recovery times in Rhesus macaques receiving ketamine (n = 8) or fentanyl-midazolam-medetomidine (n = 8) Induction times: Ketamine (KET) 2.9 ± 1.4 min; Fentanyl-midazolam-medetomidine (FMM) 7.9 ± 1.2 min. Recovery times: Ketamine (KET) 21.4 ± 13.4 min; Fentanyl-midazolam-medetomidine (FMM) 9.1 ± 3.6 min. An asterisk next to a p-value(*p) indicates a significantly differences