Broadband noise exposure does not affect hearing sensitivity in big brown bats (Eptesicus fuscus)
| العنوان: | Broadband noise exposure does not affect hearing sensitivity in big brown bats (Eptesicus fuscus) |
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| المؤلفون: | Andrea Megela Simmons, Michaela Warnecke, James A. Simmons, Kelsey N. Hom |
| المصدر: | Journal of Experimental Biology. 219:1031-1040 |
| بيانات النشر: | The Company of Biologists, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | Male, medicine.medical_specialty, Physiology, Hearing loss, Human echolocation, Aquatic Science, Stimulus (physiology), Biology, Audiology, 01 natural sciences, 03 medical and health sciences, Sound exposure, 0302 clinical medicine, Audiometry, Eptesicus fuscus, Chiroptera, 0103 physical sciences, medicine, Animals, 010301 acoustics, Molecular Biology, Ecology, Evolution, Behavior and Systematics, medicine.diagnostic_test, Auditory Threshold, biology.organism_classification, Acoustic Stimulation, Hearing Loss, Noise-Induced, Echolocation, Insect Science, QUIET, Female, Animal Science and Zoology, medicine.symptom, Noise, Auditory fatigue, 030217 neurology & neurosurgery |
| الوصف: | In many vertebrates, exposure to intense sounds under certain stimulus conditions can induce temporary threshold shifts that reduce hearing sensitivity. Susceptibility to these hearing losses may reflect the relatively quiet environments in which most of these species have evolved. Echolocating big brown bats (Eptesicus fuscus) live in extremely intense acoustic environments in which they navigate and forage successfully, both alone and in company with other bats. We hypothesized that bats may have evolved a mechanism to minimize noise-induced hearing losses that otherwise could impair natural echolocation behaviors. The hearing sensitivity of seven big brown bats was measured in active echolocation and passive hearing tasks, before and after exposure to broadband noise spanning their audiometric range (10–100 kHz, 116 dB SPL re. 20 µPa rms, 1 h duration; sound exposure level 152 dB). Detection thresholds measured 20 min, 2 h or 24 h after exposure did not vary significantly from pre-exposure thresholds or from thresholds in control (sham exposure) conditions. These results suggest that big brown bats may be less susceptible to temporary threshold shifts than are other terrestrial mammals after exposure to similarly intense broadband sounds. These experiments provide fertile ground for future research on possible mechanisms employed by echolocating bats to minimize hearing losses while orienting effectively in noisy biological soundscapes. |
| تدمد: | 1477-9145 0022-0949 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c18cb6694229b9985b89d9788f55bed https://doi.org/10.1242/jeb.135319 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....1c18cb6694229b9985b89d9788f55bed |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14779145 00220949 |
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