Seong Hee Choi

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PURPOSE To develop and evaluate a rat excised larynx model for the measurement of acoustic, aerodynamic, and vocal fold vibratory changes resulting from vocal fold scar. METHOD Twenty-four 4-month-old male Sprague-Dawley rats were assigned to 1 of 4 experimental groups: chronic vocal fold scar, chronic vocal fold scar treated with 100-ng basic fibroblast(More)
OBJECTIVES/HYPOTHESIS The purpose of this study was to compare the clinical effectiveness of type I thyroplasty, injection laryngoplasty, and graft implantation for the treatment of vocal fold scar and pathologic sulcus vocalis. STUDY DESIGN Prospective, multi-arm, quasi-experimental research design. METHODS Twenty-eight patients with newly diagnosed(More)
The aim of this study was to measure the shear modulus of the vocal fold in a human hemilarynx, such that the data can be related to direction of applied stress and anatomical context. Dynamic spring rate data were collected using a modified linear skin rheometer using human hemilarynges, and converted to estimated shear modulus via application of a simple(More)
The aim of this study was to investigate the acoustic and electroglottographic characteristics of patients with mutational dysphonia before and after voice therapy. The clinical records of 15 patients with mutational dysphonia were reviewed, and their voice recordings were analyzed with the help of the Lx Speech Studio program (Laryngograph Ltd, London,(More)
OBJECTIVE/HYPOTHESIS Acoustic analysis is a commonly used method for quantitatively measuring vocal fold function. Voice signals are analyzed by selecting a waveform segment and using various algorithms to arrive at parameters such as jitter, shimmer, and signal-to-noise ratio (SNR). Accurate and reliable methods for selecting a representative vowel segment(More)
OBJECTIVE The aim of this study was to assess the reliability and validity of the Pediatric Voice Handicap Index (pVHI) for cross-cultural adaptation of the Korean version with school age children. METHODS The questionnaire was translated into Korean and was completed by 101 Korean parents who have children with or without disordered voice. The Korean(More)
OBJECTIVE To investigate the effect of vocal fold injury location on vibratory amplitude and lateral phase difference. STUDY DESIGN Repeated measures with each excised canine larynx serving as own control. SETTING Basic science study conducted in university laboratory. METHODS Vocal fold vibration of excised canine larynges was recorded with a(More)
OBJECTIVE The primary goal of this study was to evaluate a nonlinear dynamic approach to the acoustic analysis of dysphonia associated with vocal fold scar and sulcus vocalis. STUDY DESIGN Case-control study. METHODS Acoustic voice samples from scar/sulcus patients and age-/sex-matched controls were analyzed using correlation dimension (D2) and phase(More)
Table S1. Functional classification of proteins identified by LC-MS/MS. Data are drawn from three independent vocal fold mucosa samples using an identification threshold based on a 1% estimated false positive rate, removal of global single peptide hits, and removal of local single peptide hits derived from spectra that failed de novo peptide(More)
The primary site of lesion induced by noise exposure is the hair cells in the organ of Corti and the primary neural degeneration occurs in synaptic terminals of cochlear nerve fibers and spiral ganglion cells. The cellular basis of noise-induced hearing loss is oxidative stress, which refers to a severe disruption in the balance between the production of(More)