What anatomical structures and features affect the acquisition and production of speech sounds?
moveable and immoveable articulators
What are the moveable articulators?
What does the Jaw help facilitate?
resonance and articulation
What are the immoveable articulators?
What are lips important for the production of?
bilabials
What is the most vital articulator for the production of the majority of English sounds?
tongue
What is the progression of speech sound acquisition?
- undifferentiated to differentiated
How does speech develop from undifferentiated to differentiated?
Why are infants early productions restricted to phonemes produced primarily by the jaw?
because they rely on jaw movement due to limited control of lips and tongue
what does the production of full range of English sounds (consonants & vowels) require?
lower lip and tongue movements independent of the underlying jaw
What are the implications of structural deficits and poor oral motor control?
What type of speech errors would you expect with malocclusions?
What type of speech errors would you expect with cleft lip and/or palate?
-surgery completed within first two years to close fissure without permanent effects on articulation
What type of speech errors would you expect with ankyloglossia?
-limits tongue tip mobility so it compromises speech sound production
What type of speech errors would you expect with a submucosa cleft?
?? can’t find this in my notes, but it’s on the study guide.. ?
What type of speech errors would you expect with velopharyngeal insufficiency?
What are the possible causes of poor oral motor and speech deficits?
-central and peripheral nervous system damage. (EX: brain injury, neurodegenerative disease, etc.)
what are the etiological factors for Dysarthria?
what are the speech and neural characteristics of Dysarthria?
What are the etiological factors for Apraxia of speech?
- developmental: without evidence of neurological damage
What are the speech and neural characteristics of apraxia of speech?
What is the purpose of an oral motor exam?
- measure structural and functional integrity of speech mechanism
What do you assess in terms of FUNCTION during an oral motor exam?
What do you observe during an oral motor exam in terms of structure? and what are the particular anatomical parts?