Near-threshold equal-loudness contours for harbor seals (Phoca vitulina) derived from reaction times during underwater audiometry:a preliminary study
Equal-loudness functions describe relationships between the frequencies of sounds and their perceived loudness. This pilot study investigated the possibility of deriving equal-loudness contours based on the assumption that sounds of equal perceived loudness elicit equal reaction times (RTs). During...
Published in: | The Journal of the Acoustical Society of America |
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Language: | English |
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2011
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Online Access: | https://research-portal.st-andrews.ac.uk/en/researchoutput/nearthreshold-equalloudness-contours-for-harbor-seals-phoca-vitulina-derived-from-reaction-times-during-underwater-audiometry(67b6ae17-6481-4d69-92cc-b0f3bf2b0b1d).html https://doi.org/10.1121/1.3518779 |
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ftunstandrewcris:oai:research-portal.st-andrews.ac.uk:publications/67b6ae17-6481-4d69-92cc-b0f3bf2b0b1d 2024-06-23T07:56:11+00:00 Near-threshold equal-loudness contours for harbor seals (Phoca vitulina) derived from reaction times during underwater audiometry:a preliminary study Kastelein, Ronald A Wensveen, Paul Jacobus Terhune, John M de Jong, Christ A F 2011-01 https://research-portal.st-andrews.ac.uk/en/researchoutput/nearthreshold-equalloudness-contours-for-harbor-seals-phoca-vitulina-derived-from-reaction-times-during-underwater-audiometry(67b6ae17-6481-4d69-92cc-b0f3bf2b0b1d).html https://doi.org/10.1121/1.3518779 eng eng https://research-portal.st-andrews.ac.uk/en/researchoutput/nearthreshold-equalloudness-contours-for-harbor-seals-phoca-vitulina-derived-from-reaction-times-during-underwater-audiometry(67b6ae17-6481-4d69-92cc-b0f3bf2b0b1d).html info:eu-repo/semantics/restrictedAccess Kastelein , R A , Wensveen , P J , Terhune , J M & de Jong , C A F 2011 , ' Near-threshold equal-loudness contours for harbor seals (Phoca vitulina) derived from reaction times during underwater audiometry : a preliminary study ' , Journal of the Acoustical Society of America , vol. 129 , no. 1 , pp. 488-95 . https://doi.org/10.1121/1.3518779 Acoustic Stimulation Animals Audiometry Auditory Threshold Female Immersion Loudness Perception Phoca Pilot Projects Psychoacoustics Reaction Time Time Factors Video Recording article 2011 ftunstandrewcris https://doi.org/10.1121/1.3518779 2024-06-13T00:51:34Z Equal-loudness functions describe relationships between the frequencies of sounds and their perceived loudness. This pilot study investigated the possibility of deriving equal-loudness contours based on the assumption that sounds of equal perceived loudness elicit equal reaction times (RTs). During a psychoacoustic underwater hearing study, the responses of two young female harbor seals to tonal signals between 0.125 and 100 kHz were filmed. Frame-by-frame analysis was used to quantify RT (the time between the onset of the sound stimulus and the onset of movement of the seal away from the listening station). Near-threshold equal-latency contours, as surrogates for equal-loudness contours, were estimated from RT-level functions fitted to mean RT data. The closer the received sound pressure level was to the 50% detection hearing threshold, the more slowly the animals reacted to the signal (RT range: 188-982 ms). Equal-latency contours were calculated relative to the RTs shown by each seal at sound levels of 0, 10, and 20 dB above the detection threshold at 1 kHz. Fifty percent detection thresholds are obtained with well-trained subjects actively listening for faint familiar sounds. When calculating audibility ranges of sounds for harbor seals in nature, it may be appropriate to consider levels 20 dB above this threshold. Article in Journal/Newspaper Phoca vitulina University of St Andrews: Research Portal The Journal of the Acoustical Society of America 129 1 488 495 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
Acoustic Stimulation Animals Audiometry Auditory Threshold Female Immersion Loudness Perception Phoca Pilot Projects Psychoacoustics Reaction Time Time Factors Video Recording |
spellingShingle |
Acoustic Stimulation Animals Audiometry Auditory Threshold Female Immersion Loudness Perception Phoca Pilot Projects Psychoacoustics Reaction Time Time Factors Video Recording Kastelein, Ronald A Wensveen, Paul Jacobus Terhune, John M de Jong, Christ A F Near-threshold equal-loudness contours for harbor seals (Phoca vitulina) derived from reaction times during underwater audiometry:a preliminary study |
topic_facet |
Acoustic Stimulation Animals Audiometry Auditory Threshold Female Immersion Loudness Perception Phoca Pilot Projects Psychoacoustics Reaction Time Time Factors Video Recording |
description |
Equal-loudness functions describe relationships between the frequencies of sounds and their perceived loudness. This pilot study investigated the possibility of deriving equal-loudness contours based on the assumption that sounds of equal perceived loudness elicit equal reaction times (RTs). During a psychoacoustic underwater hearing study, the responses of two young female harbor seals to tonal signals between 0.125 and 100 kHz were filmed. Frame-by-frame analysis was used to quantify RT (the time between the onset of the sound stimulus and the onset of movement of the seal away from the listening station). Near-threshold equal-latency contours, as surrogates for equal-loudness contours, were estimated from RT-level functions fitted to mean RT data. The closer the received sound pressure level was to the 50% detection hearing threshold, the more slowly the animals reacted to the signal (RT range: 188-982 ms). Equal-latency contours were calculated relative to the RTs shown by each seal at sound levels of 0, 10, and 20 dB above the detection threshold at 1 kHz. Fifty percent detection thresholds are obtained with well-trained subjects actively listening for faint familiar sounds. When calculating audibility ranges of sounds for harbor seals in nature, it may be appropriate to consider levels 20 dB above this threshold. |
format |
Article in Journal/Newspaper |
author |
Kastelein, Ronald A Wensveen, Paul Jacobus Terhune, John M de Jong, Christ A F |
author_facet |
Kastelein, Ronald A Wensveen, Paul Jacobus Terhune, John M de Jong, Christ A F |
author_sort |
Kastelein, Ronald A |
title |
Near-threshold equal-loudness contours for harbor seals (Phoca vitulina) derived from reaction times during underwater audiometry:a preliminary study |
title_short |
Near-threshold equal-loudness contours for harbor seals (Phoca vitulina) derived from reaction times during underwater audiometry:a preliminary study |
title_full |
Near-threshold equal-loudness contours for harbor seals (Phoca vitulina) derived from reaction times during underwater audiometry:a preliminary study |
title_fullStr |
Near-threshold equal-loudness contours for harbor seals (Phoca vitulina) derived from reaction times during underwater audiometry:a preliminary study |
title_full_unstemmed |
Near-threshold equal-loudness contours for harbor seals (Phoca vitulina) derived from reaction times during underwater audiometry:a preliminary study |
title_sort |
near-threshold equal-loudness contours for harbor seals (phoca vitulina) derived from reaction times during underwater audiometry:a preliminary study |
publishDate |
2011 |
url |
https://research-portal.st-andrews.ac.uk/en/researchoutput/nearthreshold-equalloudness-contours-for-harbor-seals-phoca-vitulina-derived-from-reaction-times-during-underwater-audiometry(67b6ae17-6481-4d69-92cc-b0f3bf2b0b1d).html https://doi.org/10.1121/1.3518779 |
genre |
Phoca vitulina |
genre_facet |
Phoca vitulina |
op_source |
Kastelein , R A , Wensveen , P J , Terhune , J M & de Jong , C A F 2011 , ' Near-threshold equal-loudness contours for harbor seals (Phoca vitulina) derived from reaction times during underwater audiometry : a preliminary study ' , Journal of the Acoustical Society of America , vol. 129 , no. 1 , pp. 488-95 . https://doi.org/10.1121/1.3518779 |
op_relation |
https://research-portal.st-andrews.ac.uk/en/researchoutput/nearthreshold-equalloudness-contours-for-harbor-seals-phoca-vitulina-derived-from-reaction-times-during-underwater-audiometry(67b6ae17-6481-4d69-92cc-b0f3bf2b0b1d).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1121/1.3518779 |
container_title |
The Journal of the Acoustical Society of America |
container_volume |
129 |
container_issue |
1 |
container_start_page |
488 |
op_container_end_page |
495 |
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1802649113550913536 |