Abstract:
OBJECTIVES:The main objective of this study is to determine whether chronic sound deprivation leads to poorer speech discrimination in humans. DESIGN:We reviewed the audiologic profile of 240 patients presenting normal and symmetrical bone conduction thresholds bilaterally, associated with either an acute or chronic unilateral conductive hearing loss of different etiologies. RESULTS:Patients with chronic conductive impairment and a moderate, to moderately severe, hearing loss had lower speech recognition scores on the side of the pathology when compared with the healthy side. The degree of impairment was significantly correlated with the speech recognition performance, particularly in patients with a congenital malformation. Speech recognition scores were not significantly altered when the conductive impairment was acute or mild. CONCLUSIONS:This retrospective study shows that chronic conductive hearing loss was associated with speech intelligibility deficits in patients with normal bone conduction thresholds. These results are as predicted by a recent animal study showing that prolonged, adult-onset conductive hearing loss causes cochlear synaptopathy.
journal_name
Ear Hearjournal_title
Ear and hearingauthors
Okada M,Welling DB,Liberman MC,Maison SFdoi
10.1097/AUD.0000000000000787subject
Has Abstractpub_date
2020-05-01 00:00:00pages
500-507issue
3eissn
0196-0202issn
1538-4667journal_volume
41pub_type
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