NROC34H3 : Complex auditory behaviour emerges from simple reactive steering.docx

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Complex auditory behaviour emerges from simple reactive steering. The recognition and localization og sound signals is imp for acoustic communication. Complex neural mechanisms are thought to underlie the processing of species-specific sound patterns even in those with simple auditory systems. This paper shows that when walking and flying each sound pulse of the communication signal releases a rapid steering response. Therefore, auditory orientation emerges from reactive motor responses to individual sound. Crickets communicate with stereotyped patterns of constant frequency sound pulses. Hence, suitable model for investigating mechanisms underlying acoustic pattern recognition and localization. Male crick produce long-lasting calling songs made up of 4 to 5 sound pulses that are repeated at frequency of 2-3hz. Female cricks are attracted by calling song and walkor fly toward the males. Auditory pattern recognition in female cricks is tuned to the species-specific song structure. To gain insight into auditory orientation, the steering behaviour was analysed in response to split-song patterns.

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