Modulation of Vasomotive Activity in Rabbit External Ophthalmic
Artery by Neuropeptides
Figure 2
Example of changes in vascular tone observed after an intra-arterial injection of NPY in group A, causing vasoconstriction and increase in frequency and amplitude of the oscillations. We can see an example of an effect of an intra-arterial injection of VIP in perfusion pressure, producing vasodilation and decrease in frequency and amplitude of the oscillations. On the axis, the perfusion pressure recorded at the rabbit external ophthalmic artery is represented in mm Hg. In the axis, we represent the time in seconds.
