05a motor system overview reflex
TRANSCRIPT
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Voluntary Motor Control
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1 Functional Organization of NS
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1 Structural Organization of NS
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Organization of Motor Nervous System
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Nervous System
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Spinal Motor Neuron
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Spinal Cord : White Matter
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Spinal Cord
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Motor Unit
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Neuromuscular Junction
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Release of ACh
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Mechanism of Muscle contraction
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Types of Muscle Contraction
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Muscle Types
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The Regulation of Muscle force
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Spinal Animal
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The Motor Pattern for Stepping in Mammals
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Muscle Spindle
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Muscle Spindle: Stretch Receptor
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Stretch Reflex
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Stretch Reflex
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Golgi Tendon Organ
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Golgi Tendon Organ
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Feedback Inhibition: Golgi Tendon Organ
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Withdrawal Reflex
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Polysynaptic withdrawal Reflex
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Withdrawal and Crossed Extensor Reflex
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Polysynaptic Reflex
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Cat Walk
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Cat hind limb activity during stepping
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Central pattern generator
Elements of the central pattern generator are revealed by electrical stimulation of high-threshold cutaneous and muscle afferents (flexor reflex afferents, FRA) in spinal cats treated with L-DOPA (L-dihydrox-yphenylalanine) and nialamide
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Sensory Feedback for walking
A. Oscillating movements around
the hip joint in an immobilized
decerebrate cat
B. Stretching the detached hip
flexor muscle (iliopsoas) in a
walking decerebrate cat causes
inhibition of extensor activity and
an earlier onset of flexor activity.
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Locomotor Center in Cat
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Mesencephalic locomotor center stimulation in Cat
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Human Locomotion