Scanning behavior in echolocating common pipistrelle bats (Pipistrellus pipistrellus)
Echolocating bats construct an auditory world sequentially by analyzing successive pulse-echo pairs. Many other mammals rely upon a visual world, acquired by sequential foveal fixations connected by visual gaze saccades. We investigated the scanning behavior of bats and compared it to visual scannin...
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ftubkonstanz:oai:kops.uni-konstanz.de:123456789/50703 2024-02-11T10:08:00+01:00 Scanning behavior in echolocating common pipistrelle bats (Pipistrellus pipistrellus) Seibert, Anna-Maria Koblitz, Jens C. Denzinger, Annette Schnitzler, Hans-Ulrich 2013 application/pdf http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1w9evors39gwx9 https://doi.org/10.1371/journal.pone.0060752 eng eng http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1w9evors39gwx9 http://dx.doi.org/10.1371/journal.pone.0060752 23580164 1728973392 http://creativecommons.org/licenses/by/4.0/ PloS ONE. Public Library of Science (PLoS). 2013, 8(4), e60752. eISSN 1932-6203. Available under: doi:10.1371/journal.pone.0060752 ddc:570 doc-type:article doc-type:Text 2013 ftubkonstanz https://doi.org/10.1371/journal.pone.0060752 2024-01-21T23:55:00Z Echolocating bats construct an auditory world sequentially by analyzing successive pulse-echo pairs. Many other mammals rely upon a visual world, acquired by sequential foveal fixations connected by visual gaze saccades. We investigated the scanning behavior of bats and compared it to visual scanning. We assumed that each pulse-echo pair evaluation corresponds to a foveal fixation and that sonar beam movements between pulses can be seen as acoustic gaze saccades. We used a two-dimensional 16 microphone array to determine the sonar beam direction of succeeding pulses and to characterize the three dimensional scanning behavior in the common pipistrelle bat (Pipistrellus pipistrellus) flying in the field. We also used variations of signal amplitude of single microphone recordings as indicator for scanning behavior in open space. We analyzed 33 flight sequences containing more than 700 echolocation calls to determine bat positions, source levels, and beam aiming. When searching for prey and orienting in space, bats moved their sonar beam in all directions, often alternately back and forth. They also produced sequences with irregular or no scanning movements. When approaching the array, the scanning movements were much smaller and the beam was moved over the array in small steps. Differences in the scanning pattern at various recording sites indicated that the scanning behavior depended on the echolocation task that was being performed. The scanning angles varied over a wide range and were often larger than the maximum angle measurable by our array. We found that echolocating bats use a "saccade and fixate" strategy similar to vision. Through the use of scanning movements, bats are capable of finding and exploring targets in a wide search cone centered along flight direction. published published Article in Journal/Newspaper Pipistrellus pipistrellus KOPS - The Institutional Repository of the University of Konstanz PLoS ONE 8 4 e60752 |
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Open Polar |
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KOPS - The Institutional Repository of the University of Konstanz |
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ftubkonstanz |
language |
English |
topic |
ddc:570 |
spellingShingle |
ddc:570 Seibert, Anna-Maria Koblitz, Jens C. Denzinger, Annette Schnitzler, Hans-Ulrich Scanning behavior in echolocating common pipistrelle bats (Pipistrellus pipistrellus) |
topic_facet |
ddc:570 |
description |
Echolocating bats construct an auditory world sequentially by analyzing successive pulse-echo pairs. Many other mammals rely upon a visual world, acquired by sequential foveal fixations connected by visual gaze saccades. We investigated the scanning behavior of bats and compared it to visual scanning. We assumed that each pulse-echo pair evaluation corresponds to a foveal fixation and that sonar beam movements between pulses can be seen as acoustic gaze saccades. We used a two-dimensional 16 microphone array to determine the sonar beam direction of succeeding pulses and to characterize the three dimensional scanning behavior in the common pipistrelle bat (Pipistrellus pipistrellus) flying in the field. We also used variations of signal amplitude of single microphone recordings as indicator for scanning behavior in open space. We analyzed 33 flight sequences containing more than 700 echolocation calls to determine bat positions, source levels, and beam aiming. When searching for prey and orienting in space, bats moved their sonar beam in all directions, often alternately back and forth. They also produced sequences with irregular or no scanning movements. When approaching the array, the scanning movements were much smaller and the beam was moved over the array in small steps. Differences in the scanning pattern at various recording sites indicated that the scanning behavior depended on the echolocation task that was being performed. The scanning angles varied over a wide range and were often larger than the maximum angle measurable by our array. We found that echolocating bats use a "saccade and fixate" strategy similar to vision. Through the use of scanning movements, bats are capable of finding and exploring targets in a wide search cone centered along flight direction. published published |
format |
Article in Journal/Newspaper |
author |
Seibert, Anna-Maria Koblitz, Jens C. Denzinger, Annette Schnitzler, Hans-Ulrich |
author_facet |
Seibert, Anna-Maria Koblitz, Jens C. Denzinger, Annette Schnitzler, Hans-Ulrich |
author_sort |
Seibert, Anna-Maria |
title |
Scanning behavior in echolocating common pipistrelle bats (Pipistrellus pipistrellus) |
title_short |
Scanning behavior in echolocating common pipistrelle bats (Pipistrellus pipistrellus) |
title_full |
Scanning behavior in echolocating common pipistrelle bats (Pipistrellus pipistrellus) |
title_fullStr |
Scanning behavior in echolocating common pipistrelle bats (Pipistrellus pipistrellus) |
title_full_unstemmed |
Scanning behavior in echolocating common pipistrelle bats (Pipistrellus pipistrellus) |
title_sort |
scanning behavior in echolocating common pipistrelle bats (pipistrellus pipistrellus) |
publishDate |
2013 |
url |
http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1w9evors39gwx9 https://doi.org/10.1371/journal.pone.0060752 |
genre |
Pipistrellus pipistrellus |
genre_facet |
Pipistrellus pipistrellus |
op_source |
PloS ONE. Public Library of Science (PLoS). 2013, 8(4), e60752. eISSN 1932-6203. Available under: doi:10.1371/journal.pone.0060752 |
op_relation |
http://nbn-resolving.de/urn:nbn:de:bsz:352-2-1w9evors39gwx9 http://dx.doi.org/10.1371/journal.pone.0060752 23580164 1728973392 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1371/journal.pone.0060752 |
container_title |
PLoS ONE |
container_volume |
8 |
container_issue |
4 |
container_start_page |
e60752 |
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1790606892599345152 |