Perception Mechanism of Bone-Conducted Ultrasound and Its Clinical Use.
Tadashi NishimuraTadao OkayasuAkinori YamashitaHiroshi HosoiTadashi KitaharaPublished in: Audiology research (2021)
It is generally believed that ultrasound cannot be heard. However, ultrasound is audible when it is presented through bone conduction. Bone-conducted ultrasound (BCU) has unique characteristics; the most interesting is its perception in patients with profound deafness. Some patients can perceive it and discriminate speech-modulated BCU. Previous reports have suggested that BCU can be used for a hearing aid or tinnitus sound therapy. In this review, the perception of BCU at both the peripheral and central levels was investigated based on previous studies, although some of them remain controversial. We also investigated the clinical use of BCU. To develop hearing aids utilizing BCU, the encoding of speech signals into BCU has to be established. The outcomes of the reported speech modulations were evaluated. Furthermore, the suppression of tinnitus by BCU was reviewed, and the feasibility of the application of BCU to tinnitus treatment was investigated.
Keyphrases
- hearing loss
- magnetic resonance imaging
- bone mineral density
- end stage renal disease
- ultrasound guided
- atomic force microscopy
- contrast enhanced ultrasound
- newly diagnosed
- bone loss
- soft tissue
- bone regeneration
- ejection fraction
- chronic kidney disease
- peritoneal dialysis
- type diabetes
- computed tomography
- prognostic factors
- bone marrow
- emergency department
- intellectual disability
- adipose tissue
- skeletal muscle
- metabolic syndrome
- high speed
- combination therapy