KIN 461 Week 1 Notes
KIN 461 Week 1 Notes KIN 461-401
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This 2 page Class Notes was uploaded by Tanski Notetaker on Saturday January 30, 2016. The Class Notes belongs to KIN 461-401 at University of Wisconsin - Milwaukee taught by Dr. Peterson in Spring 2016. Since its upload, it has received 50 views. For similar materials see Principles of Motor Learning in Kinesiology at University of Wisconsin - Milwaukee.
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Date Created: 01/30/16
Week 1 Notes 1 An Introduction to Movement Sensory systems: provide an internal representation of the outside world o Transform physical energy into neural signals Motor systems translate neural signals into contractile force in muscles in order to produce movements The Psychophysics of Movement Motor processing begins w/ an internal representation/an image of the desired result of movement Motor equivalence: the same result can be accomplished in different ways by the motor system o Example: writing a sentence with left hand, right hand or feet will still produce the same sentence, even if it looks different Sensory processing: involves analyzing physical events in the external world into elemental properties and assembling these sensory elements into coherent perceptions Motor processing constructs behaviors or motor acts by assembling and coordinating elementary motor components Look at organization of perception in terms of 4 attributes of a stimulus: o Quality (or modality_ o Intensity o Location o Duration Intensity is signaled by the rate of firing individual motor neurons and the recruitment of motor neurons Motor Systems Generate 3 Types of Movement Reflex Responses (e.g. knee jerk or swallowing) o Simplest motor behaviors o Rapid, stereotyped involuntary responses o Controlled by the eliciting stimulus Rhythmic Motor Patterns (e.g. walking, running, chewing) o Combine features of voluntary and reflex acts o Only initiation and termination are voluntary o Once initiated, relatively stereotyped and repetitive CPGs (central pattern generators: networks of motor neurons) in locomotion Voluntary Movements (e.g. driving a car or play the piano) o Most complex o Purposeful (goal directed) o Learned – less conscious with practice Week 1 Notes 2 Motor Systems 4 Tasks Controlling contraction of individual muscles Convey commands to many muscle groups Take into account the distribution of body mass and plan postural adjustments Take into account the motor plant; mechanical properties of muscles, bones and joints o Adjust commands to compensate for inertia of limbs and the mechanical arrangement of the muscles, bones and joint prior to the movement