Auditory processing with bilateral cochlear implantation in patients with pervasive developmental disorder

2015 Fiscal Year Final Research Report

• Project/Area Number: 25462636
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Otorhinolaryngology
• Research Institution: Iwate Medical University (2015); Kyoto University (2013)
• Principal Investigator: HIRAUMI Harukazu 岩手医科大学, 医学部, 准教授 (10374167)
• Co-Investigator(Kenkyū-buntansha): YAMAGUCHI Shinobu 大阪保健医療大学, 保健医療学部, 教授 (50509552) ; SAKAMOTO Tatsunori 田附興風会, 医学研究所, 研究員 (60425626) ; YAMAMOTO Norio 京都大学, 医学研究科, 助教 (70378644)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 人工内耳 / 聴性誘発反応 / 広汎性発達障害

Outline of Final Research Achievements

Bilateral cochlear implantation (CI) recipients with pervasive developmental disorder (1) felt uncomfortable with 2nd CI, which became tolerable by wearing 1st CI first, and 2nd CI afterward, and (2) showed poor progress in verbal expression with 1st CI, and rapidly caught up with normal hearing children with 2nd CI.
Postlingual hearing loss subjects with CI failed to distinguish vowels from vowel-like complex sounds. Auditory evoked response was similar with these two sounds. Prelingual CI recipients were able to distinguish vowels from vowel-like complex sounds. The P2N2 complex evoked by the vowel-like complex sounds was larger than that evoked by vowels.

Free Research Field

耳鼻咽喉科学