کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5739343 | 1615547 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Noise-induced hearing loss induces loudness intolerance in a rat Active Sound Avoidance Paradigm (ASAP)
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
سیستم های حسی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Hyperacusis is a loudness hypersensitivity disorder in which moderate-intensity sounds are perceived as extremely loud, aversive and/or painful. To assess the aversive nature of sounds, we developed an Active Sound Avoidance Paradigm (ASAP) in which rats altered their place preference in a Light/Dark shuttle box in response to sound. When no sound (NS) was present, rats spent more than 95% of the time in the Dark Box versus the transparent Light Box. However, when a 60 or 90Â dB SPL noise (2-20Â kHz, 2-8Â kHz, or 16-20Â kHz bandwidth) was presented in the Dark Box, the rats'' preference for the Dark Box significantly decreased. Percent time in the dark decreased as sound intensity in the Dark Box increased from 60Â dB to 90Â dB SPL. Interestingly, the magnitude of the decrease was not a monotonic function of intensity for the 16-20Â kHz noise and not related to the bandwidth of the 2-20Â kHz and 2-8Â kHz noise bands, suggesting that sound avoidance is not solely dependent on loudness but the aversive quality of the noise as well. Afterwards, we exposed the rats for 28 days to a 16-20Â kHz noise at 102Â dB SPL; this exposure produced a 30-40Â dB permanent threshold shift at 16 and 32Â kHz. Following the noise exposure, the rats were then retested on the ASAP paradigm. High-frequency hearing loss did not alter Dark Box preference in the no-sound condition. However, when the 2-20Â kHz or 2-8Â kHz noise was presented at 60 or 90Â dB SPL, the rats avoided the Dark Box significantly more than they did before the exposure, indicating these two noise bands with energy below the region of hearing loss were perceived as more aversive. In contrast, when the 16-20Â kHz noise was presented at 60 or 90Â dB SPL, the rats remained in the Dark Box presumably because the high-frequency hearing loss made 16-20Â kHz noise less audible and less aversive. These results indicate that when rats develop a high-frequency hearing loss, they become less tolerant of low frequency noise, i.e., high intensity sounds are perceived as more aversive and should be avoided.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hearing Research - Volume 353, September 2017, Pages 197-203
Journal: Hearing Research - Volume 353, September 2017, Pages 197-203
نویسندگان
Senthilvelan Manohar, Jaclyn Spoth, Kelly Radziwon, Benjamin D. Auerbach, Richard Salvi,