Fig. 2.
Alteration of spinal reflexes during intra-arterial perfusion of 5-HT. In (A) the effect of 5-HT (0.1 µM for 90 sec) on the DR-DRP/DRR is shown. In (B) signal averaged DR-VRP/VRR responses (7 reflexes per photo) are shown prior to and during 5-HT (10 µM for 240 sec). Supramaximal stimulation, 0.2 msec duration.