| Near-threshold equal-loudness contours for harbor seals (Phoca vitulina) derived from reaction times during underwater audiometry: A preliminary study. | |
| | |
MedLine Citation:
|
PMID: 21303029 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
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. |
| | |
Authors:
|
Ronald A Kastelein; Paul J Wensveen; John M Terhune; Christ A F de Jong |
Related Documents
:
|
11265059 - Static and phasic cross-talk effects in discrete bimanual reversal movements. 7789429 - Kinematic analysis of wing and leg movements for type i motility in e9 chick embryos. 20727139 - Kinematic analysis of the daily activity of drinking from a glass in a population with ... 16407429 - Activity of tonically active neurons in the monkey putamen during initiation and withho... 8185899 - Kinematic analyses of manual asymmetries in visual aiming movements. 16895459 - Learning to discriminate complex movements: biological versus artificial trajectories. 18007839 - Light trapping in a fiber grating defect by four-wave mixing. 21480759 - Protection against acoustic trauma by direct application of d-methionine to the inner ear. 22465509 - Effects of illumination and packaging on non-heme iron and color attributes of sliced ham. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: The Journal of the Acoustical Society of America Volume: 129 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2011 Jan |
Date Detail:
|
Created Date: 2011-02-09 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
|
Languages: eng Pagination: 488 Citation Subset: IM |
Affiliation:
|
Sea Mammal Research Company (SEAMARCO), Julianalaan 46, 3843 CC Harderwijk, The Netherlands. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Toneburst-evoked auditory brainstem response in a leopard seal, Hydrurga leptonyx.
Next Document: Assessing risk of baleen whale hearing loss from seismic surveys: The effect of uncertainty and indi...