Journal of Audiology and Otology最新文献

Digital therapeutics (DTx) in hearing research have emerged as a new category of therapies providing evidence-based intervention via digital means, such as software, smartphone apps, or websites. However, although relatively new, they are not well-established. In this article, we review DTx technologies in hearing research fields, focusing on three categories: prevention and diagnosis, aid (assistance), and cure (digital medicine). We observe that most DTx systems require interactions with users (or patients) without the direct support of clinical professionals to obtain or collect medical evidence; this makes training (or education) features crucial to the therapy's success. In this view, this article discusses the education or training functions of the current DTx and their contribution and purposes. The impact of emerging artificial intelligence (AI) on DTx in hearing research is being explored, and the future of DTx concerning AI integration is being discussed. We believe that this work will contribute to a better understanding of the current and future DTx technological advancements and, in particular, shed light on the field of hearing research.

Background and objectives: Otoacoustic emissions (OAEs) are low-intensity sounds generated by the cochlea and associated with the function of the outer hair cells. Since OAE measurements do not require active participation of a listener, OAEs are considered an objective measure of cochlear function. While distortion-product OAEs (DPOAEs) are commonly used in clinical practice, limited information is available on the performance of various clinical devices. This study compared two commercial clinical devices, Titan and Eclipse from Interacoustics, and collected normative data for DPOAEs in people with normal hearing. The data collection and analysis were focused on signal and noise amplitudes as well as signal-to-noise ratios (SNRs).

Subjects and methods: Sixty-three participants with normal hearing (age 23.2±2.0 years) were included in the study. DPOAEs were measured at 31 frequencies ranging from 500 to 10,000 Hz.

Results: DPOAE amplitude differed across frequencies. Additionally, a high number of unreliable responses were observed at the edge frequencies (<828 Hz and >6,072 Hz). There were no significant differences between the two devices in terms of DPOAE amplitudes, but the recorded-noise levels (amplitude) differed significantly. SNRs of the recorded OAEs were frequency dependent (higher frequencies showed larger SNRs), and significant differences in terms of SNR were found between the two devices.

Conclusions: Despite the above-mentioned differences, the OAEs recorded with both devices met the pass criteria for the SNR (≥6 dB) consistently across frequencies, and thus the differences do not compromise the test outcomes. The frequency dependence of the OAE amplitudes and the corresponding SNRs may be relevant for clinical practice.

Background and objectives: Dizziness and the accompanying complaints, including sleep disorders and depression, are common among the elderly. This study investigated the effect of vestibular rehabilitation on complaints of dizziness, sleep problems, and the severity of depression in older people with chronic dizziness.

Subjects and methods: The study included 25 participants with chronic dizziness accompanied by comorbid sleep disturbance (Pittsburgh Sleep Quality Index [PSQI] global score >5). Participants completed the Dizziness Handicap Inventory (three sub-scales: physical, emotional, and functional), the PSQI, and the Persian version of the shortened Beck Depression Inventory (BDI-13) before and after the vestibular rehabilitation.

Results: The findings showed that the handicap caused by dizziness, the severity of depression, and the quality of sleep in the study participants improved significantly after the intervention (p<0.05).

Conclusions: Vestibular rehabilitation is an effective intervention to reduce dizziness handicap, comorbid sleep disturbance, and depression.

Background and objectives: Cochlear implants (CIs) are well known to improve audibility and speech recognition in individuals with hearing loss, but some individuals still struggle with many aspects in communication, such as prosody. This study explores how prosodic elements are perceived by those with normal hearing (NH) and CIs.

Subjects and methods: Thirteen individuals with NH and thirteen CI users participated in this study and completed speech perception, speech prosody perception, speech prosody production, pitch difference discrimination, and melodic contour perception testing.

Results: NH listeners performed significantly better than CI users on speech perception, speech prosody perception (except for words with neutral meaning and a negative prosody change and when words were repeated twice), pitch difference discrimination, and melodic contour perception testing. No statistical significance was observed for speech prosody production for both groups.

Conclusions: Compared to NH listeners, CI users had limited ability to recognize prosodic elements. The study findings highlight the necessity of an assessment tool and signal processing algorithm for CIs, specifically targeting prosodic elements in clinical settings.