Modulation of Vasomotive Activity in Rabbit External Ophthalmic
Artery by Neuropeptides
Figure 3
In the upper panel, the power spectrum density (PSD) of basal spontaneous oscillations obtained as a result of mathematical analysis with the Fast Fourier algorithm shows a major band at 0.12 Hz. In the middle panel, the power spectrum density obtained after Fourier analysis of the oscillations after NPY injection shows a major band around 0.28 Hz which results in an increase in the frequency of the oscillations, so there was a marked increase in the frequency of the spontaneous oscillations. In the lower panel, the power spectrum density obtained after VIP injection shows a peak frequency of 0.08 Hz, so there was a decrease in the frequency of the spontaneous oscillations.
