Nasal Air Emissions in Cleft Palate Speech |Velopharyngeal Incompetence | SLP скачать в хорошем качестве

Nasal Air Emissions in Cleft Palate Speech |Velopharyngeal Incompetence | SLP

Nasal Air Emission in Cleft Palate Speech | Velopharyngeal Incompetence |SLP Nasal Air Emission  Air leaks through the velopharyngeal valve during consonant production and can causes audible nasal emission, with or without hypernasality.  Occurs on high pressure consonants (plosives, fricatives, affricates), and is most audible on voiceless consonants  Small VP opening: This usually causes an inconsistent nasal rustle, which is also called nasal turbulence (although the sound is actually produced by bubbling of secretions as air is forced through the small opening). The distortion is loud and distracting. There is no effect on the strength of consonants or utterance length. It usually does not occur with hypernasality  Large VP opening: There is little impedance to the flow so the nasal emission may be low in intensity or even inaudible. Also, hypernasality masks the sound of nasal emission. The loss of air pressure causes: o Low volume: Sound is absorbed in the pharynx and nasal cavity, causing the volume of speech to be reduced. o Weak or omitted consonants: The greater the nasal air emission, the weaker the consonants will be due to loss of oral air pressure. o Short utterance length: The leak of air causes need to increase respiratory effort and take more frequent breaths. Therefore, utterance length becomes shortened. o Nasal grimace: There is a contraction seen at side of nose or at nasal bridge as an overflow muscle reaction to effort in achieving closure. o Compensatory articulation errors and obligatory distortions THANKS FOR WATCHING