Fig. 1.

Rhythmic RSNA in conscious rabbits show frequency-dependent, baroreflex-driven coupling to arterial pressure rhythms. (A) Rabbits were chronically instrumented with arterial pressure telemeters and renal sympathetic nerve electrodes. (B) Arterial pressure wavelet spectrum, RSNA wavelet spectrum, AP-RSNA coherence, and AP-RSNA phase shift from one representative rabbit demonstrate AP-RSNA coupling between 0.2 and 0.75 Hz with consistently negative phase shift. (C) Group coherence occurrence histograms and (D) group phase shift occurrence histograms show high AP-RSNA coherence and negative AP-RSNA phase shift behavior across all five rabbits between 0.2 and 0.75 Hz.