Fig. 2.

Neural responses in the auditory system of echolocating bats are suited to behavioral demands. (A) Echo-delay tuning of a “delay-tuned neuron” from the superior colliculus of awake restrained big brown bat, measured using a fixed interval of 100 ms between successively presented calls (black line, 0% variability) or using sequences with 30% variability in the intercall interval (gray line) (data from G. Gifford, University of Maryland, Baltimore). (B) Organization of the auditory cortex of the mustached bat (see Bat Echolocation: From Behavior to Neurobiology for details) (adapted with permission from ref. 10; art courtesy of Patricia J. Wynne).