The frequency response of the vibrissae of harp seal, Pagophilus Groenlandicus, to sound in air and water.
The motion of isolated seal vibrissae due to low frequency sound in air has been measured using a microscope with a video camera and modeled using an FEM method with good agreement between the measurements and the model; the model has also been used to predict the motion of seal vibrissae in water....
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ftdoajarticles:oai:doaj.org/article:563b3826fa8e41cb82ae122bf801eb82 2023-05-15T16:33:45+02:00 The frequency response of the vibrissae of harp seal, Pagophilus Groenlandicus, to sound in air and water. Lisa F Shatz Theodorus De Groot 2013-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0054876 https://doaj.org/article/563b3826fa8e41cb82ae122bf801eb82 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC3551803?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0054876 https://doaj.org/article/563b3826fa8e41cb82ae122bf801eb82 PLoS ONE, Vol 8, Iss 1, p e54876 (2013) Medicine R Science Q article 2013 ftdoajarticles https://doi.org/10.1371/journal.pone.0054876 2022-12-30T23:06:39Z The motion of isolated seal vibrissae due to low frequency sound in air has been measured using a microscope with a video camera and modeled using an FEM method with good agreement between the measurements and the model; the model has also been used to predict the motion of seal vibrissae in water. The shape of the seal vibrissae is that of a tapered right rectangular prism, unlike that of the previously studied rat vibrissae which are conical in shape. Moreover, unlike rat vibrissae which oscillate in the direction of the sound stimulus, two different modes of vibration of seal vibrissae were observed - one corresponding to the wider side being stimulated and one with the narrow side stimulated. The tuning of the seal vibrissae was much sharper than those of rat vibrissae, with quality factors about three times as large as those of rat vibrissae. As shown by the model, this increased sharpness is caused by the larger cross-sectional areas (by more than a factor of ten) of the seal vibrissae. This increased sharpness may be necessary for seal vibrissae so that they can have tuning in water, where the drag more heavily dampens the tuning than in air. The results suggest that vibrissae tuning may be important in the seal's ability to track the wake of its prey. Article in Journal/Newspaper Harp Seal Pagophilus groenlandicus Directory of Open Access Journals: DOAJ Articles PLoS ONE 8 1 e54876 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Medicine R Science Q |
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Medicine R Science Q Lisa F Shatz Theodorus De Groot The frequency response of the vibrissae of harp seal, Pagophilus Groenlandicus, to sound in air and water. |
topic_facet |
Medicine R Science Q |
description |
The motion of isolated seal vibrissae due to low frequency sound in air has been measured using a microscope with a video camera and modeled using an FEM method with good agreement between the measurements and the model; the model has also been used to predict the motion of seal vibrissae in water. The shape of the seal vibrissae is that of a tapered right rectangular prism, unlike that of the previously studied rat vibrissae which are conical in shape. Moreover, unlike rat vibrissae which oscillate in the direction of the sound stimulus, two different modes of vibration of seal vibrissae were observed - one corresponding to the wider side being stimulated and one with the narrow side stimulated. The tuning of the seal vibrissae was much sharper than those of rat vibrissae, with quality factors about three times as large as those of rat vibrissae. As shown by the model, this increased sharpness is caused by the larger cross-sectional areas (by more than a factor of ten) of the seal vibrissae. This increased sharpness may be necessary for seal vibrissae so that they can have tuning in water, where the drag more heavily dampens the tuning than in air. The results suggest that vibrissae tuning may be important in the seal's ability to track the wake of its prey. |
format |
Article in Journal/Newspaper |
author |
Lisa F Shatz Theodorus De Groot |
author_facet |
Lisa F Shatz Theodorus De Groot |
author_sort |
Lisa F Shatz |
title |
The frequency response of the vibrissae of harp seal, Pagophilus Groenlandicus, to sound in air and water. |
title_short |
The frequency response of the vibrissae of harp seal, Pagophilus Groenlandicus, to sound in air and water. |
title_full |
The frequency response of the vibrissae of harp seal, Pagophilus Groenlandicus, to sound in air and water. |
title_fullStr |
The frequency response of the vibrissae of harp seal, Pagophilus Groenlandicus, to sound in air and water. |
title_full_unstemmed |
The frequency response of the vibrissae of harp seal, Pagophilus Groenlandicus, to sound in air and water. |
title_sort |
frequency response of the vibrissae of harp seal, pagophilus groenlandicus, to sound in air and water. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2013 |
url |
https://doi.org/10.1371/journal.pone.0054876 https://doaj.org/article/563b3826fa8e41cb82ae122bf801eb82 |
genre |
Harp Seal Pagophilus groenlandicus |
genre_facet |
Harp Seal Pagophilus groenlandicus |
op_source |
PLoS ONE, Vol 8, Iss 1, p e54876 (2013) |
op_relation |
http://europepmc.org/articles/PMC3551803?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0054876 https://doaj.org/article/563b3826fa8e41cb82ae122bf801eb82 |
op_doi |
https://doi.org/10.1371/journal.pone.0054876 |
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PLoS ONE |
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e54876 |
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