Prolactin, vasoactive intestinal peptide, and peptide histidine methionine elicit selective increases in REM sleep in rabbits.
Obal F, Opp M, Cady AB, Johannsen L, Krueger JM. Prolactin, vasoactive intestinal peptide, and peptide histidine methionine elicit selective increases in REM sleep in rabbits. Brain Res. 1989 Jun 26; 490(2):292-300.