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Infants
- Respond to environment with reflexes
- Around 9 months develop cause and effect and respond to their name
- Develop motor control from head to toes, medial to distal
- Begin to act purposefully
- Differentiated movement of head and trunk
- Crossing mid-line: ability to hand something to the right with only your left hand
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Motor Plan
ability of the brain to create highways and make certain tasks automatic
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Gross and Fine Motor Movements of Speech in Infants
- Gross: cooing
- Fine: babbling cvcvcv repetition
- * Articulation is a fine motor movement that is learned later
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Speech Sounds
- Voiced and Unvoiced
- Sound produced in the VF is harmonic
- /b/ is voiced
- unvoiced sounds added to the lips
- unvoiced bilabial sound plosive
- /p/ is unvoiced
- unvoiced noise added at the lips
- unvoiced bilabial sound plosive
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Turbulent Noise
- Fricatives and Affricates produced with turbulent noise
- Friction put air-stream into turbulence
- Occurs when you constict the airstream just enough o disturb airflow
- /s/: unvoiced, lingua-alveolar, fricative
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Manner of Production
How a sound is produced (voiced/unvoiced)
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Place of Articulation
- Where the sound is produced
- Bilabial, lingua-alveolar, etc.
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Affricate
Stop and fricative
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