高度難聴者における補聴効果及び読話能力の測定法の研究

概要

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Numerical word lists and nonsense monosyllabic lists have been widely used in speech audiometry. However, these lists have hardly been applicable to estimate hearing aid effect and speech reading ability in cases with high sensory neural deafness. The reason is as follows : The former is too sensitive and the latter is much less sensitive to discrimination test. Moreover, nonsense monosyllabic lists could not be applied to estimating speech reading ability because a subject could memorize the patterns of lip movements for meaningful words or phrase but not lip movements for every nonsense word.The author found that trisyllabic word lists were the most suitable for estimating hearing aid eflect and speech reading ability. Fifty persons with high sensory neural deafness were measured by these lists before and after auditory and speech training for 6 months. The three grades of intelligibility, such as above 80%, 79_??_50% and below 500, were classified in respect with hearing aid indication. The subjects with intelligibility below 50% did not show any effect of hearing aid but improvement of speech reading after training.Moreover, speech reading ability could be measured by these lists. Thus, it was found that the final results of auditory and speech training for the subject could be antiapated, based on the grade of the subjects intelligibility obtained by these lists before training.
社団法人日本耳鼻咽喉科学会の論文