KIN 3513 Study Guide - Midterm Guide: Proprioception, Muscle Spindle, Skeletal Muscle
4 Sep 2018
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Proprioception, touch, and vision: sensory information is essential for all theories of motor control and learning. Information during the movement (only if action is closed loop controlled) Joints: types of proprioceptors, muscle spindles, within fibers of most skeletal muscles, mechanoreceptors, detects changes in muscle fibers length (stretch) and velocity (of the stretch) In skeletal muscle near insertion of tendon: detects changes in muscle tension (force, not very good in detection muscle lengths changes. Joint receptors: not one type but several. If defects occur before the optic chiasm, the eye is blind. Initial movement instructions sufficient to move limb to the vicinity of the target. Important motor control question concerns the spatial-temporal relationship between the transport and grasp components. Just prior to hand contact: between the two critical periods, brief, intermittent visual snapshots are sufficient. Is vision of the hands necessary to catch a moving object: key factor is the amount of experience.
