UE Motor Control - E1
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What is the coordination rule?
Eye- head-hand *the entire reach is guided by vision (first peripheral and then foval)
What is smooth pursuit
Tracking an object w/your eyes - process all info in frame (start slow & go faster)
What are saccades
Hold 2 fingers up and quickly move eyes b/t - only processing the finger tips
What is gaze-evoked nystagmus
Slow, correcting movement (towards the side spun) followed by rapid correcting saccades (in the opposite direction_
How do you test for gaze-evoked nystagmus
Spin an individual in a chair 10 x CW and 10 x CCW and watch their eyes
What is ocular dysmetria
Over or undershooting targets in a 3D world (R or L, up or down, etc)
What is disrupted smooth pursuit
Inability to smoothly pursue an object
Where do we get our spatial vision from?
The dorsal pathway (superior) through the parietal lobe to process spatial rlns b/t objects
Where do we get our object vision from?
The ventral pathway (Inferior) through the temporal lobe, processing physical qualities of an object
What is transport
Primarily the proximal joints moving the hand where it needs to be
What joints are involved w/transport w/in arms reach
Scapula, shoulder, elbow and forearm
What joints are involved w/transport beyond arms reach
Trunk & if standing may include the LEs via a hip or ankle strategy
T or F: arms length forms a square around you
F - it is a semicircle
What tract allows for distal movement of the hand
Lateral CST
Analysis: Sitting w/in arms length
Facilitation of: • abdominal and lumbar co-contraction w/in arms reach • scapular protraction • shoulder flexion and some abd • elbow extension and pronation or supination or neutral
Analysis: Sitting BEYOND arms length
Includes a dynamic trunk Facilitation of: - WS to IPSI tuberosity - Facil PPT and Lumb Flex - Facil lat elong (IPSI) and lat flexion (CL)
What are the components of scapular protraction
Upward rotation/ER - abduction, ER, elevation
What are the components of retraction
Downward rotation/IR - adduction, IR, depression
Analysis: Standing WITHIN Arm’s Length
Trunk and body stable Facilitation of: -abd & lumbar co-contraction for reach w/in arms length
Analysis: Standing BEYOND arm’s length ankle strategy
• Dynamic trunk and body & LEs • Facil WS to PISI foot and trunk elongation • Ankle strategy - relative DF
Analysis: Standing BEYOND arm’s length hip strategy
Facilitate: • COM of pelvis must shift post • COM of chest must shift anterior, elevate and lateral (IPSI)
Analysis: Stepping Strategy
Facilitate: • Thru pelvis to encourage step • Thru upper (chest) and lower trunk elongation
Define grasp
Primarily the distal joints of wrist and hand perform manipulations
Define reaching
Multi-joint movement accomplished by a straight line trajectory