홍성화 교수

Extratympanic electrocochleography may play an important role, especially in patients with less definite symptoms, but the diagnosis should also be anchored in the patient's clinical history, symptoms, and audiogram.

In this large study, permanent hearing loss occurred in 16 patients (2.2%). Patients with a mild hearing loss with a good SDS (cochlear type) demonstrated much better prognosis than those with poor SDS (retrocochlear type) or total deafness. In addition, total deafness after surgery had no chance of recovery to preoperative hearing capacity.

Evidence of visual-auditory cross-modal plasticity in deaf individuals has been widely reported. Superior visual abilities of deaf individuals have been shown to result in enhanced reactivity to visual events and/or enhanced peripheral spatial attention. The goal of this study was to investigate the association between visual-auditory cross-modal plasticity and speech perception in post-lingually deafened, adult cochlear implant (CI) users. Post-lingually deafened adults with CIs (N = 14) and a

The pathology of the organ of Corti followed the pattern of neuroepithelial defects. Hair cells in organs of Corti had degenerated in circling mice at 10 days old, in a time-dependent manner. Scanning electron microscopy (SEM) showed that stereociliary bundles were irregular in size and had shortened at 10 days, and that this degeneration was complete at 21 days. The number of spiral ganglion neurons significantly reduced with age. RT-PCR analysis indicated that the transmembrane inner ear gene

CDP can develop similarly to CNH in auditory perception and speech production, if an additional caregiver with normal hearing provides sufficient support and speech input. In addition, using sign language in addition to oral language might not be harmful, and these children can be a communication bridge between their deaf parents and society.

Auditory perception and speech production of deaf children with an ID improved consistently after CI. In addition, the communication mode also took a favorable turn from nonverbal to vocalizations or oral communication or from vocalizations to oral communication.

Sound localization performance improved significantly after canaloplasty. Canaloplasty could provide better localization benefit and subjective improvement in spatial sensation to unilateral CAA patients.

Controlling the size and narrow size distribution of polymer-based nanocarriers for targeted drug delivery is an important parameter that significantly influences their colloidal stability, biodistribution, and targeting ability. Herein, we report a high-throughput microfluidic process to fabricate colloidally stable aqueous nanoparticulate colloids with tunable sizes at 50-150 nm and narrow size distribution. The nanoparticulates are designed with different molecular weight polyesters having bo

Synaptic transmission between the medial nucleus of the trapezoid body (MNTB) and the lateral superior olive (LSO) was investigated in circling mice, an animal model for inherited deafness, using the voltage-clamp technique. In postnatal day 9 (P9) approximately P11 homozygous (cir/cir) circling mice, perfusion with 10 microM DL-APV and 10 microM CNQX reduced the 10 min average of postsynaptic currents (PSCs) to 8.8 +/- 3.0% compared with controls (n = 6). In heterozygous (+/cir) mice in the sam

Polypyrrole (PPy)-based electrochemical energy storage electrodes have been widely investigated due to their desired pseudocapacitive charge storage capabilities. However, with the rigid and powdery nature of PPy, its utilization in flexible supercapacitor electrodes has been hindered. Herein, a surface-modified thermoplastic polyurethane (TPU) was utilized as the flexible substrate. It was coated with a thin surface layer of carbon nanotubes (CNTs), which provide the desired electrical conducti