1 Hit in 0.034 sec

The Effects of Spatially Separated Call Components on Phonotaxis in Túngara Frogs: Evidence for Auditory Grouping

Hamilton E. Farris, A. Stanley Rand, Michael J. Ryan
2002 Brain, Behavior and Evolution  
Numerous animals across disparate taxa must identify and locate complex acoustic signals imbedded in multiple overlapping signals and ambient noise. A requirement of this task is the ability to group sounds into auditory streams in which sounds are perceived as emanating from the same source. Although numerous studies over the past 50 years have examined aspects of auditory grouping in humans, surprisingly few assays have demonstrated auditory stream formation or the assignment of
more » ... nt of multicomponent signals to a single source in non-human animals. In our study, we present evidence for auditory grouping in female tú ngara frogs. In contrast to humans, in which auditory grouping may be facilitated by the cues produced when sounds arrive from the same location, we show that spatial cues play a limited role in grouping, as females group discrete components of the species' complex call over wide angular separations. Furthermore, we show that once grouped the sep-arate call components are weighted differently in recognizing and locating the call, so called 'what' and 'where' decisions, respectively.
doi:10.1159/000065937 pmid:12417822 fatcat:hl36rrp3lrc4bebw3ggrvacz7e