Estimation of Puretone Thresholds of Sensorineural Hearing Loss Adults Using Auditory Brain Stem Responses to Tone Burst and Tone Burst in Notched Noise
10.3969/j.issn.1006-7299.2018.02.001
- VernacularTitle:短纯音及切迹噪声掩蔽的短纯音ABR对感音神经性听力损失成年人纯音听阈的评估
- Author:
Qijuan ZOU
1
;
Daofeng NI
;
Yingying SHANG
;
Fengrong LI
Author Information
1. 首都医科大学附属北京同仁医院耳鼻咽喉头颈外科 北京100730
- Keywords:
Tone burst;
Notched noise;
Auditory brain stem response;
Puretone thresholds;
Sensorineural hearing loss
- From:
Journal of Audiology and Speech Pathology
2018;26(2):115-119
- CountryChina
- Language:Chinese
-
Abstract:
Objective Thresholds for auditory brain stem responses (ABRs) to tone burst and tone burst in notched noises of two different intensities were tested in adults with sensorineural hearing loss.The relationship between ABR and puretone thresholds was analyzed to identify an acoustic stimuli with better frequency-specificity.Methods Thirty-eight adults with sensorineural hearing loss (totally 45 ears) were included in the study.Tone burst used to elicit ABRs had 2.5 cycles on the rise and fall and no plateau.Notched noises of two different intensities were used to mask tone burst ipsilaterally when recording ABRs.Those two kinds of notched noises were 25 dB (intensity A) and 15 dB (intensity B) lower than tone burst in intensity respectively.Tone burst ABRs without masking were named tb-ABR,while tone burst ABRs in notched noises of intensity A and B named as amtb-ABR and bmtb-ABR.Thresholds for tb ABR,amtb ABR and bmtb-ABR were tested and analyzed.Results The regression coefficients between puretone thresholds and thresholds for tb-ABR,amtb-ABR and bmtb-ABR of all frequencies were greater than 0.8.The mean differences between ABR and puretone thresholds were all less than 10 dB.Tb-ABR thresholds the were the closest to puretone thresholds at 500 Hz,while bmtb ABR thresholds were the closest at the other three frequencies.Bmtb-ABR thresholds were more close to puretone thresholds in patients with steeply sloping hearing loss.Conclusion Thresholds for all those three ABRs could be used to predict puretone thresholds.In most condition,tb-ABR thresholds were able to estimate puretone thresholds.In some condition,different stimuli could be chosen to elicit ABR at different frequencies.It was reasonable to choose bmtb -ABR for puretone thresholds estimation in patients with steeply sloping hearing loss.
