Introduction: Respiration for speech and non-speech activities is an ongoing, adaptive process. The adaptations involved may relate to anatomical factors in the respiratory tree, or physiological demands in the environment. When the nasal cavity is not adequately patent, adjustments in oral and pharyngeal posture must take place in order to allow respiration to proceed effectively. In some instances resting oral postures may be influenced and habit response patterns may be developed. These adjustments of oral posture are the broad subject of this journal special issue. More specific to the article, the discussion is of those factors which influence nasal patency and the techniques available for measuring the degree of nasal patency. [excerpt]
Riski, J. E. (1988). Nasal airway interference: considerations for evaluation., International Journal of Orofacial Myology, 14 (1), 11-21.