Utility of auditory steady-state and brainstem responses in age-related hearing loss in rats

被引:5
|
作者
Sanz-Fernandez, Ricardo [1 ]
Sanchez-Rodriguez, Carolina [2 ]
Granizo, Jose Juan [3 ]
Durio-Calero, Enrique [1 ]
Martin-Sanz, Eduardo [1 ]
机构
[1] Hosp Univ Getafe, Dept Otolaryngol, Madrid 28905, Spain
[2] Hosp Univ Getafe, Fdn Invest Biomed, Madrid 28905, Spain
[3] Hosp Infanta Cristina, Clin Epidemiol Unit, Madrid, Spain
关键词
Sprague-Dawley rats; ABR; ASSR; auditory clicks; COCHLEAR; DEGENERATION; STIMULUS;
D O I
10.3109/00016489.2014.953203
中图分类号
R76 [耳鼻咽喉科学];
学科分类号
100213 ;
摘要
Conclusions: The results support the idea that auditory steady-state response (ASSR) is a more accurate test for studying age-related hearing loss (ARHL) in Sprague-Dawley rats. Differences in the rat middle ear may explain the variations of the click properties, with a displacement of the energy toward the 8 and 10 kHz frequencies compared with humans. Objectives: The purpose of this study was to evaluate ARHL in older and younger Sprague-Dawley rats using auditory clicks and tone burst with auditory brainstem response (ABR), in addition to ASSR. Methods: This was a prospective cohort study with 50 animals divided into 5 groups based on their age in months. A total of 100 registers were elicited from each one of the 3 auditory measurements systems in an electrically shielded, double-walled, sound-treated cabin. Nine frequencies, from 0.5 to 16 kHz were analyzed with the auditory steady-state response and compared with the results elicited by the clicks and tone-burst ABR. Results: Comparisons between the different frequencies showed lower thresholds in those frequencies below 2 kHz, independently of their age in months. The ARHL was detected by each one of the three auditory measurement systems, but with lower thresholds with the ASSR test. Finally, auditory clicks showed better correlations with 8 and 10 kHz elicited by ASSR, which was different to what was expected, based on human studies.
引用
收藏
页码:35 / 41
页数:7
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