Echolocating bats rely on audiovocal feedback to adapt sonar signal design
| Autor: | Cynthia F. Moss, Jinhong Luo |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Engineering Speech recognition Jamming Human echolocation Signal Sonar Feedback 03 medical and health sciences 0302 clinical medicine Jamming avoidance response Chiroptera Animals Ultrasonics Multidisciplinary Behavior Animal business.industry Echo (computing) Biological Sciences Adaptation Physiological Sound 030104 developmental biology Echolocation Flight Animal Auditory Perception Echolocation jamming Vocal learning Vocalization Animal business 030217 neurology & neurosurgery |
| Zdroj: | Proceedings of the National Academy of Sciences. 114:10978-10983 |
| ISSN: | 1091-6490 0027-8424 |
| DOI: | 10.1073/pnas.1711892114 |
| Popis: | Many species of bat emit acoustic signals and use information carried by echoes reflecting from nearby objects to navigate and forage. It is widely documented that echolocating bats adjust the features of sonar calls in response to echo feedback; however, it remains unknown whether audiovocal feedback contributes to sonar call design. Audiovocal feedback refers to the monitoring of one's own vocalizations during call production and has been intensively studied in nonecholocating animals. Audiovocal feedback not only is a necessary component of vocal learning but also guides the control of the spectro-temporal structure of vocalizations. Here, we show that audiovocal feedback is directly involved in the echolocating bat's control of sonar call features. As big brown bats tracked targets from a stationary position, we played acoustic jamming signals, simulating calls of another bat, timed to selectively perturb audiovocal feedback or echo feedback. We found that the bats exhibited the largest call-frequency adjustments when the jamming signals occurred during vocal production. By contrast, bats did not show sonar call-frequency adjustments when the jamming signals coincided with the arrival of target echoes. Furthermore, bats rapidly adapted sonar call design in the first vocalization following the jamming signal, revealing a response latency in the range of 66 to 94 ms. Thus, bats, like songbirds and humans, rely on audiovocal feedback to structure sonar signal design. |
| Databáze: | OpenAIRE |
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