Radiology and Bioimaging, Rehabilitation

Audiology

Hearing Restoration for Deafened Patients Using the Approach Based on the Biomedical Engineering

Medical Sciences Course

  • Master / Doctoral Degree

Faculty

KAWASE, TetsuakiKAWASE, Tetsuaki
KAWASE, Tetsuaki

Professor, M.D.

Research Theme

  • Development of diagnostic tools based on the pathophysiology of hearing loss
  • Research on auditory rehabilitation
  • Research on audio-visual bimodal speech perception
Research Keywords:

hearing loss, rehabilitative audiology, audio-visual speech perception, binaural hearing, tinnitus

Technical Keywords:

hearing aid, cochlear implant, magnetoencephalography

Laboratory Introduction

Sound information, which is converted to the electrical spike signal of the cochlear nerve in the inner ear, is transmitted to the brain via the auditory system. Disturbance of any part of auditory system causes hearing impairment. In considering the improvement of speech perceptibility of impaired listeners, it is important to understand the pathology and pathophysiology of deafness. In our laboratory, researches being conducted on auditory prostheses and related auditory science to help impaired listeners compensate for the deteriorated speech perception.
Ongoing principal research themes are as follows: binaural hearing and audio-visual bimodal speech perception
1) Research on binaural hearing and audio-visual bimodal speech perception
2) Development of diagnostic tools based on the pathophysiology of hearing loss
3) Research on auditory prosthesis (cochlear, brainstem and mid-brain implants, hearing aid)
4) Research on auditory rehabilitation
5) Research on tinnitus retraining therapy (TRT)

Figure 1. Electrophysiological mapping system for auditory brainstem implant

Figure 1. Electrophysiological mapping system for auditory brainstem implant

Figure 2. Neuromagnetic investigation on auditory steady state respons

Figure 2. Neuromagnetic investigation on auditory steady state respons

Recent Publications

  • Kawase T, et al. Contra-noise suppresses 40-Hz auditory-steady-state fields without significant change of N100m. Neuroimage 59:1037-1042, 2011.
  • Takata Y, et al. Auditory evoked magnetic fields in patients with absent brainstem responses due to auditory neuropathy with optic atrophy. Clin Neurophysiol. 123: 985-992, 2012.
  • Oda K, et al. Masking effects in patients with auditory neuropathy -possible involvement of suppression mechanism caused by normal outer hair cell function- Otology & Neurotology 34: 868-876, 2013.
  • Kawase T, et al. Positive auditory cortical responses in patients with absent brainstem response. Clinical Neurophysiology 125:148-53, 2014.
  • Usubuchi H, et al. Effects of contralateral noise on the 20-Hz auditory steady state response magnetoencephalography study. PLoS One 9: e99457, 2014.