Measurements: Outcome Measures Speed/Time and Magnitude
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15 Terms
outcome measures?
accuracy , speed/time , magnitude
Reaction Time
interval between the onset of a signal or stimulus, to the initiation of a response
Simple RT
1 stimulus goes with 1 reaction
Choice RT
mutiple stimuli go with a specific RXN
Discrimination RT
a person uses processing information to differentiate between mutiple stimuli with 1 specific RXN that goes with that stimulus
Simple RT Ex)
shooting of a gun indicates the start of a race
Choice RT Ex)
stoplight: red means stop, green means go, yellow means slow down
Discrimination RT Ex)
Ex) a batter has to differentiate between different types of pitches (stimuli) to react with their swing time
Movement Time
The interval of time from the initiation of the response to the completion of the movement.
Response Time
the sum of RT + MT. From the onset of a “go” stimulus to the completion of the movement.
Electromyography (EMG)
measures the electrical activity of the muscle
EMG : 40-80 ms period
No electrical Activity. known as the pre-motor RT and represents CENTRAL PROCESSES (decision making, perceptual processes, etc).
What have EMGS have been used for?
used to separate RT into central and peripheral components.
How do we measure Magnitude?
height, weight, Distance
How do we measure Speed/Time?
Reaction Time
Movement Time
Response Time