Fig. 7
From: Aerodynamics and motor control of ultrasonic vocalizations for social communication in mice and rats
Small laryngeal geometry changes can alter USV frequencies and trajectories. A Putative model USV that is driven by identical motor gestures but with small changes in larynx geometry. Changes in the impingement length from 100% (purple) up to 80% (green) or down to 120% (yellow) alters the contours of the USV. B Changes of frequency driven by changes in laryngeal geometry when all other control parameters are kept constant