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Simon Fraser University *

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Mechanical Engineering

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Oct 30, 2023

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Lecture 2b, September 10th - Motor Skill Measures p 27-28 Objectives Measuring performance - describe differences between performance outcome measures and performance production/process measures - describe rt, mt and response time measures as they relate to measurement of speed - be familiar with terminology and equipment needed to separate and measure rt and mt - identify the difference between three types of rt situations (donders rt) task perspective 1. does the task require fine or gross motor control 2. does the task take place in an open or closed environment 3. is the task discrete or continuous in nature 4. does the task tax motor or cognitive resources performance perspective - defines skill in terms of how good somebody is at something - low skill (novice) >>> highly skilled (expert) were they fast, accurate, consistent, how did they achieve outcome (efficient and effective)? Maximum speed and accuracy are characteristics of proficiency Measures of movement speed inter skill, but also tell us about how skills are performed 1. rt - time before movement - reaction time, interval between presentation of unanticipated stimulus and beginning of a response 2. mt - how long it takes to complete task - movement time, interval reflecting movement (initiation and end), reflects time to transport the limb 3. trt - sum of rt and mt - total response time why an unanticipated stimulus - need to be responding to the go signal - want to get measure of reaction time to respond to that stimulus - can be measured frame by frame, force plate time to process information - as soon as movement underway, information processing time in rt interval foreperiod, imperative go stimulus, rt, mt foreperiod - warming stimulus rt - measure of information processing time four key features/terms important to response time measurement 1. foreperiod - variable foreperiod
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