Effects of Vision on Evaluation of Hearing-aid and Cochlear Impant Usage

2014 Fiscal Year Final Research Report

• Project/Area Number: 25590282
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Special needs education
• Research Institution: Yokohama National University
• Principal Investigator: NAKAGAWA Tatsuo 横浜国立大学, 教育人間科学部, 教授 (00164137)
• Co-Investigator(Kenkyū-buntansha): SATO Masayuki 筑波技術大学, 障害者高等教育研究支援センター, 教授 (50222021) ; KATO Yasuyoshi 筑波大学, 人間系, 准教授 (10233826)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 聴覚障害 / 補聴器 / 人工内耳 / 視聴覚音声知覚

Outline of Final Research Achievements

Individual differences in auditory-visual speech perception in people with hearing loss were investigated using syllables, words and sentences. The stimuli were presented in auditory-only, visual-only, and auditory-visual mode of stimulation for both congruent and incongruent conditions. Nine young adults with hearing-aids or cochlear implants participated in the study. The relative increase in auditory-visual speech perception due to the addition of visual cues to the auditory signal was calculated for each condition. Results show that the subjects were able to integrate both auditory and visual cues in the auditory-visual congruent condition. The auditory-visual gain in speech perception was reduced in the incongruent condition. The subjects showed significant individual differences in the amount of gain for different experimental conditions.

Free Research Field

聴覚障害教育