(from the article `speech disorder`) ...physiological activity. In the hyperkinetic disorders, the highly coordinated patterns of phonation regress to the primitive, forceful, and ... Found on http://www.britannica.com/eb/a-z/g/2
Contraction of the constrictor muscle of the pharynx elicited by stimulation of sensory receptors on the soft palate, by psychic stimuli, or systemically by drugs. ... (12 Dec 1998) ... Found on http://www.encyclo.co.uk/local/20973