10 - Articulatory Disorders

Question 1

What are the 3 abnormal kinematics (movement control) associated with PD?

Answer 1

• reduction in size and speed of jaw and lip speech and nonspeech movements
• abnormal jaw movements and timing of lip (reversal of normal upper lip, lower lip, jaw order in bilabial plosives
• abnormal visual and auditory motor tracking of jaw

Question 2

What are the 3 abnormal kinetics (force control) of PD?

Answer 2

• reduced maximum closing forces of lip and tongue
• unstable/variable isometric forces of lip and tongue
• increased stiffness of lip (greater resistance to force)

Question 3

Name 3 of the 5 abnormalities of sensation and perception with PD?

Answer 3

• sense of jaw position (proprioception)
• 2 point lip discrimination (touch)
• sense of tongue force levels
• sense of smell (olfaction)
• perception of speech intensity, rate, emotional tone, and facial expressions of emotion

Question 4

What is “kinetics”?

Answer 4

Force control

Question 5

What is “kinematics”?

Answer 5

Movement control