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Abstract
To explore whether patients with unilateral idiopathic sudden sensorineural hearing loss (uISSNHL) have normal speech in noise (SIN) perception under different masking conditions after complete recovery of pure tone audiometry. Eight completely recovered uISSNHL patients were enrolled in ISSNHL group, while 8 normal-hearing adults matched with age, gender, and education experience were selected as the control group. Each group was tested SIN under four masking conditions, including noise and speech maskings with and without spatial separation cues. For both ISSNHL and control groups a two-way ANOVA showed a statistically significant effect of masking type (p = 0.007 vs p = 0.012). A significant effect of perceived spatial separation (p < 0.001 vs p < 0.001). A significant interaction between masking type and perceived spatial separation was found (p < 0.001 vs p < 0.001). A paired sample T-test showed that the SIN perception of the control group was statistically significant lower than that of ISSNHL patients only under speech masking without spatial separation cues (p = 0.011). There were still abnormalities in the auditory center shortly after complete recovery in the ISSNHL group (within 2 weeks). However, the auditory periphery and higher-level ability to use spatial cues was normal.
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Details
1 Peking University, Department of Otolaryngology, Head and Neck Surgery, People’s Hospital, Beijing, China (GRID:grid.11135.37) (ISNI:0000 0001 2256 9319)
2 Karolinska Institute, Department of Clinical Science, Intervention and Technology, Stockholm, Sweden (GRID:grid.4714.6) (ISNI:0000 0004 1937 0626); Karolinska Institute, Department of Otolaryngology Head and Neck Surgery & Audiology and Neurotology, Karolinska University Hospital, Stockholm, Sweden (GRID:grid.4714.6) (ISNI:0000 0004 1937 0626)
3 Beijing Normal University, School of Psychology, Beijing, China (GRID:grid.20513.35) (ISNI:0000 0004 1789 9964)