An application of auditory steady-state response to objective audiometry test

2015 Fiscal Year Final Research Report

• Project/Area Number: 25350540
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Biomedical engineering/Biomaterial science and engineering
• Research Institution: Tokyo Denki University
• Principal Investigator: Tanaka Keita 東京電機大学, 理工学部, 准教授 (10366403)
• Co-Investigator(Kenkyū-buntansha): HARASHIMA Tsuneo 筑波大学, 人間総合科学研究科, 教授 (70262219) ; YUNOKUCHI Kazutomo 鹿児島大学, 大学院理工学研究科, 教授 (10094187)
• Co-Investigator(Renkei-kenkyūsha): OBUCHI Chie 国際医療福祉大学, 保健医療学部, 准教授 (30348099)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 聴覚検査 / 脳波 / 脳磁図

Outline of Final Research Achievements

Auditory Steady-State Response (ASSR) is response of auditory cortex evoked by AM tone. Recently, ASSR is being used to establish a new hearing test. However, few studies on about ASSR when stimulus condition was changed less than 1 second. Therefore, We measured ASSR when carrier frequency of AM tone was changed less than 1 second. In this experiment used six carrier frequencies (440, 550, 660, 770, 880, 990 Hz). The sound pressure level (SPL) was amplified low frequency band based on the equal loudness curve. Result, Amplitude characteristic of ASSR showed high correlation with SPL. We also examined the effect of presentation of silent animation movie on ASSR to keep the wakefulness. The amplitude did not depend on the presence of the animation. This study shows that ASSR might be useful tool for audiometry.

Free Research Field

人間医工学