Urethral flow-responsive afferents in the cat sacral dorsal root ganglia

► Recorded response of sacral afferents to urethral fluid flow in anesthetized cats. ► Single unit firing rates declined during flow with a power law dependence on time. ► Firing rates increased with flow rates exhibiting a power law dependence on rate. ► First characterization of a new class of sensory receptors. ► Advances understanding role of urethral feedback in control of lower urinary tract.