Exam 2 Info

Question 1

What are the 4 components of normal UE function?

Answer 1

1. locate target
2. reach
3. grasp
4. manipulate

Question 2

Important sense in locating a target for UE function?

Answer 2

vision: coordinated head & eye movement very important in giving information pertaining to distance to object, object size, etc.

Question 3

Important factors to consider for reach?

Answer 3

1. role of arm
2. postural control
3. transportation

Question 4

Speed progression in reaching for an object?

Answer 4

-slow initially, speed increases towards object & then slows down when target it reached

Question 5

What type of velocity profile (on a graph) would a normal reach look like?

Answer 5

-bell curve [straight & smooth trajectories]

Question 6

Final movement adjustments that occur just before grasping?

Answer 6

• grasp size decreases as it nears object
• when using vision, aperture size barely larger than object
• thumb guides movement; index finger adjusts to object size