Research for speech and swallowing disorders with patients in oral disfunction -visual articulation training and swallowing training by use of speech training sisytem-

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A multi-function speech training aid (MFSTA) was developed jointly by National Panasonic, Rion, our university, and other institutions, and its efficasy in articulaiton treatment for the celftpalate patients has been reported (Michi et al., 1993). MFSTA was recently commercialized by National Panasonic. The speech training system (STS) was improved on MFSTA.STS is possible to give a child instant feedback, not only on tongue placement, but also on the presence or absenceof frication, plosion, nasal vibration, and voicing.In this research the effectiveness of the STS is investigated during speech therapy for treatment of patients with cleft palate, functional articulation disorders and velopharyngeal incompetence who were judged to have articulation disorders.Display of the parameters for the patients helped them to distinguish between correct and incorrect articulatory movements. Particularly, displays of palato-lingual contact, frication and voicing were greatly facilitated learning of the fricative and affricative sounds.In conclusion, the Speech Training System is considered to be useful for the treatment of defective sounds in patients with cleft palate, functional articulation disorders and velopharyngeal incompetence.