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. 2012 Oct 30;3:124. doi: 10.3389/fendo.2012.00124

Figure 2.

Figure 2

Recording traces of 30 s duration from two unanesthetized trout illustrating the changes observed in ventilatory movements (ventilation), pulsatile dorsal aortic blood pressure (PDA), and electrocardiographic (ECG) signals between the pre-injection period (0–5 min) and the post-injection period (20–25 min) after intracerebroventricular (ICV) injection of (A) 50 pmol trout neuropeptide gamma (NPγ) or (B) 50 pmol trout calcitonin gene-related peptide (CGRP). Note that ICV injection of NPγ produces an impressive reduction in the ventilatory amplitude but a slight increase in the ventilatory frequency. In contrast, ICV CGRP evokes a potent increase of the ventilation rate and amplitude. Only the ICV injection of CGRP causes a substantial elevation of blood pressure and heart rate.