Targeted training of ultrasonic vocalizations in aged and Parkinsonian rats

Johnson, A. M., E. J. Doll, L. M. Grant, L. Ringel, J. N. Shier, and M. R. Ciucci. “Targeted Training of Ultrasonic Vocalizations in Aged and Parkinsonian Rats”. Journal of Visualized Experiments, Vol. 54, JoVE, 2011, p. 2835.