Clinical Application of 80-Hz Amplitude Modulation Following Response.

DOI 5 Citations 20 References
  • Aoyagi Masaru
    Department of Otolaryngology, Yamagata University School of Medicine
  • Yokota Masashi
    Department of Otolaryngology, Yamagata University School of Medicine
  • Suzuki Yutaka
    Department of Otolaryngology, Yamagata University School of Medicine
  • Watanabe Tomoo
    Department of Otolaryngology, Yamagata University School of Medicine
  • Ito Tsukasa
    Department of Otolaryngology, Yamagata University School of Medicine

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Other Title
  • ８０Ｈｚ変調周波数追随反応の臨床応用

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Abstract

The reliability of the clinical application of 80-Hz amplitude-modulation following response (80-Hz AMFR) was examined at different carrier frequencies, and the threshold pattern was compared between the pure-tone audiograms in 27 affected ears of 26 children with various patterns of audiogram. 80-Hz AMFR was also clinically examined as an objective audiometry in 2 young children with otitis media with effusion before and after the insertion of ventilation tube and in 2 children with psychogenic hearing loss.<br>The threshold patterns of 80-Hz AMFR clearly followed the corresponding audiogram patterns in all types of hearing impairment. The thresholds of 80-Hz AMFR were improved after the insertion of ventilation tube and aggravated after remission of OME. In the cases of psychogenic hearing loss, evoked response audiometry, including 80-Hz AMFR and ABR evoked by clicks, revealed almost normal hearing. The measurement of 80-Hz AMFR thus appears to be accurate in hearing assessment and to have good frequency specificity in children during sleep.

Journal

  • AUDIOLOGY JAPAN

    AUDIOLOGY JAPAN 41 (3), 221-227, 1998

    Japan Audiological Society

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