glottal area waveform
Also written as: GAW — Glottal Area Waveform
Visual representation of glottal opening and closing patterns during vocal fold vibration cycles, derived from high-speed imaging.
Full Definition
The glottal area waveform (GAW) is a graphic display that plots the area of glottal opening over time during phonation, typically extracted from high-speed laryngeal imaging or electroglottography. This waveform provides detailed information about vocal fold vibratory behavior, including opening and closing phases, contact patterns, and asymmetries. The GAW is essential for analyzing voice disorders, particularly in cases where visual assessment alone is insufficient to characterize abnormal vocal fold dynamics.
Usage
Usage note: Often abbreviated as GAW; requires specialized equipment for accurate measurement.
In Context
- "The glottal area waveform revealed asymmetric vocal fold vibration with delayed left fold closure." — High-speed imaging analysis
- "GAW analysis demonstrated improved symmetry following voice therapy intervention." — Treatment outcome assessment