Please use this identifier to cite or link to this item: https://doi.org/10.1038/s41598-021-85063-2
Title: Possible limitations of dolphin echolocation: a simulation study based on a cross-modal matching experiment
Authors: Wei, Chong
Hoffmann-Kuhnt, Matthias 
Au, Whitlow W. L.
Ho, Abel Zhong Hao 
Matrai, Eszter
Feng, Wen
Ketten, Darlene R.
Zhang, Yu
Issue Date: 23-Mar-2021
Publisher: Nature Research
Citation: Wei, Chong, Hoffmann-Kuhnt, Matthias, Au, Whitlow W. L., Ho, Abel Zhong Hao, Matrai, Eszter, Feng, Wen, Ketten, Darlene R., Zhang, Yu (2021-03-23). Possible limitations of dolphin echolocation: a simulation study based on a cross-modal matching experiment. Scientific Reports 11 (1) : 6689. ScholarBank@NUS Repository. https://doi.org/10.1038/s41598-021-85063-2
Rights: Attribution 4.0 International
Abstract: Dolphins use their biosonar to discriminate objects with different features through the returning echoes. Cross-modal matching experiments were conducted with a resident bottlenose dolphin (Tursiops aduncus). Four types of objects composed of different materials (water-filled PVC pipes, air-filled PVC pipes, foam ball arrays, and PVC pipes wrapped in closed-cell foam) were used in the experiments, respectively. The size and position of the objects remained the same in each case. The data collected in the experiment showed that the dolphin’s matching accuracy was significantly different across the cases. To gain insight into the underlying mechanism in the experiments, we used finite element methods to construct two-dimensional target detection models of an echolocating dolphin in the vertical plane, based on computed tomography scan data. The acoustic processes of the click’s interaction with the objects and the surrounding media in the four cases were simulated and compared. The simulation results provide some possible explanations for why the dolphin performed differently when discriminating the objects that only differed in material composition in the previous matching experiments. © 2021, The Author(s).
Source Title: Scientific Reports
URI: https://scholarbank.nus.edu.sg/handle/10635/231958
ISSN: 2045-2322
DOI: 10.1038/s41598-021-85063-2
Rights: Attribution 4.0 International
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