... and field conditions. In the laboratory, the preparation was stimulated with sequences of bat calls at different repetition rates typical for the guild of insectivorous bats, in the presence of background noise. The omega cell fired brief high-frequency bursts of action potentials in response to each bat...

... of an ambient background noise influenced the spontaneous classification of the transients. In the passive-hearing condition, the bats spontaneously changed their classification boundary depending on the spectral shape of the background. In the echo-acoustic condition, the classification boundary did not change...

... octavolateralis nucleus neuromast hydrodynamic stimuli background noise goldfish Carassius auratus Fishes use the lateral line to detect miniscule water motions (for reviews,see Bleckmann, 1994 ; Coombs and Montgomery, 1999 ). The behavioral relevance of the lateral line has been documented...