Abstract:
:The cochlea can be protected from acoustic trauma by moderate-level sound exposure. It is suggested that olivocochlear system may play a significant role in this protection. This study was performed to investigate distortion product otoacoustic emission (DPOAE) amplitudes changes and the efficiency of contralateral noise stimulation on DPOAE after conditioning noise exposure. Our results demonstrate that long-term conditioning can increase the DPOAE amplitudes at low frequencies (1.0-3.0 kHz) and decrease the olivocochlear efferent reflex strength at the same frequencies. The DPOAE amplitudes are partially restored to the preconditioning levels 2 weeks after conditioning; contralateral suppression also returns to the preconditioning levels. These results suggest that the enhancement of DPOAE amplitudes might be due to a decrease in olivocochlear efferent reflex strength.
journal_name
Neuroreportjournal_title
Neuroreportauthors
Peng JH,Tao ZZ,Huang ZWdoi
10.1097/WNR.0b013e32820049a8subject
Has Abstractpub_date
2007-07-16 00:00:00pages
1167-70issue
11eissn
0959-4965issn
1473-558Xpii
00001756-200707160-00016journal_volume
18pub_type
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