CSD 212 Lecture Notes - Spasmodic Dysphonia, Diane Rehm, Murmured Voice

• School: Syracuse University
• Department: Communication Sci & Disorders
• Course: CSD 212
• Professor: Tamayo

Document Summary

Vocal folds behave like strings -- 3 features change freq. Amp. s high freq. (speaking as if angry, but not yelling) Vfs vibrating but not fully adducted during phonation. Cont"d use of high pitch by post-puberty male. Cerebral cortex, pyramidal tract, peripheral nerves, neuromuscular junctions. Vfs can"t be fully adducted => breathy voice. Endoscopy: allows clinicians to see vfs & surrounding areas. Uses scope to look into nose, velopharyngeal area, larynx. Tacheostomy: hole in neck thru which patient breathes. Artifical larynx -- mech. device talks for you. Esophangeal speech -- air supply originates in upper portion of esophagus. Air released & esoph. walls drawn into vibration. Air routed from lungs to esoph. via tracheoesophageal speech prosthesis. Longer phrase length, greater pitch/oudness variability than esoph. speech. Range from difficult-to-see hole to complete absence of roof of mouth. Mvmt of soft palate, posterior pharyngeal wall, lateral walls. Patients may be both hyper & hypo nasal speech.