Figure 3.
Head twitch behavior elicited by 1.0 mg/kg R(−)-DOI following pretreatment with saline (white circle) or various doses of 25CN-NBOH (black circles.) Asterisks indicate significant differences from saline pretreatment, while hash marks indicate significant differences from lower pretreatment doses of 25CN-NBOH. Abscissa: Dose of 25CN-NBOH, expressed as mg/kg on a log scale, and administered as a pretreatment 15 min prior to R(−)-DOI injection. Ordinate: as described in Figure 2.