Study finds that while rats are consuming chocolate, they emit a distinct—40 kHz inverted-U type—ultrasound vocalization (USV). When consuming standard food pellets, they emit only flat USVs. www.eneuro.org/content/13/8...
eneuro.org
A Subtype of Ultrasonic Vocalizations during Palatable Food Consumption in Rats Identified by Machine Learning-Assisted Classification
Identifying behavioral and physiological responses to rewarding stimuli is essential for understanding positive emotional states in animals and for investigating their neural basis. Ultrasonic vocaliz...