The CF-FM signal emitted by CF-FM bats may be called "a simple-complex sound signal",which CF and FM components have different function during echolocation（O’Neill & Suga,1982; Kober et al.,1990; Fu et al.,2010; Schnitzler & Denzinger,2011; Jakobsen et al.,2013）.How to process the complex and behavior-related sound signals in the auditory system is known very little up to now.Therefore,the study on the cellular basis and mechanism of the CF-FM sound signal processing in the auditory system have the very important significance for our further...
