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4_Unit1.4_Practice copy

think back to unit 13improved performance during

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Unformatted text preview: n retention and transfer What does this remind you of???? •  Think back to Unit 1.3.....Improved performance during practice/ training does NOT equate to increased learning!!!!!!!! Why would poor performance during practice be beneficial for learning?? why does your nervous system benefit from poor performance practice?? because youknow what your doing wrong…..you konw the consequences of your actions within the evironment. if you make errors at first you will reduce the error later as you are confronted with it later. a beginner does nnot have an INTERNAL MODEL!!!!!! so you cnnot feed them too much information. INTERNAL MODEL--is the bodies adaptation to a motion in givin envirnment--the consequenses of your actions. when you learn new skills while practicing youare trying to develop an internal model!!!!!!--to anticipate the consequences. 2 7/4/12 closed loop feeedback conception of how we move……. Performance errors during practice •  Error signals can be used to modify subsequent movements Controller (i.e., CNS) Descending Motor Command Actual movement outcome Plant (i.e., limb) controller=brain controller sends out command and expectation of the result of the movement. Expected movement outcome + - Comparator Training Signal the comparator compares the movement to whats expected. as you practice you are finely tuning the comparater. Movement error Performance errors during practice obviose read on own--- •  Training signal can be used to modify descending motor commands •  The nervous system learns the relationship between descending motor commands and movement outcomes (via sensory feedback) •  Analogous to association phase of Fitts and Posner s 3-stage model of learning (Unit 1.3) •  Results in improved retention and transfer of learned motor skills •  Remember in Unit 1.3: Retention and transfer provide the best assessment of learning (as opposed to performance curves)!!! you can...
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