Fig. 4. (A) Pre-injection with ketanserin caused a significant inhibition of the
-methyl-5-HT-mediated effect. (B) Ketanserin mediated a dose-dependent
decrease in pulse size. (C) The percentage of fish that pulsed following
agonist injection. All values are means ± 1
S.E.M.; *P<0.05, significantly
different from value at t=0;
P<0.05
compared with
-methyl-5HT injection alone.