Abstract
For echolocation, the mustached bat, Pteronotus pamellii rublglnosus , emits orientation sounds, each of which consists of a long constant frequency (CF) component followed by a short frequency-modulated (FM) component. As each orientation sound contains four harmonics (H 1-4 ), there are eight components (CF 1-4 –FM 1-4 ). In the emitted sound, the second harmonic H 2 is always predominant and CF 2 is about 61 kHz. In FM 2 , frequency sweeps down from 61 to about 50 kHz. Echoes eliciting behavioural responses in the mustached bat always overlap temporally with the emitted signal. As a result, bio-sonar information must be extracted from a complex sound with up to 16 components. The data obtained from the little brown bat, Myotis lucifugus, and the mustached bat indicates that the bat's auditory system contains neural circuits that extract information-bearing elements and assemble them. It also indicates that different types of biosonar information related to different attributes of a target are systematically represented by neural activity in the separate areas of the auditory cortex.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
