Book excerpt: Here is a substantial literary addition to the complex, complicated, and under represented field of speech production. Comprehensive in its scope of clinical and experimental speech physiology, this new text clearly details vocal tract muscle systems, articularoty physiology and the associated neural substrates, the clinical measurement of aerodynamic variables, and computer applications with methods for sampling and analysis. It is accompanied by high quality CD-ROM containing numerous sample data files that include normative figures and measurements from various disorders affecting larygeal and Velopharyngeal control. TEXTBOOK