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23 Cards in this Set
- Front
- Back
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Performing voluntary, coordinated movement requires...
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preparation of the motor control system.
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Action Movement Prep. (AMP)
Preparation time is the period... |
between the intention to move and the initiation of movement itself.
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AMP
The need to prepare for movement, before action can be initiated, is inferred... |
from the observation of changes in the length of reaction time.
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AMP
RT (reaction time) = |
index of preparation (required to produce an action).
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AMP
The increase or decrease of RT indicates that... |
some process is being affected.
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AMP
Even planned movement takes... |
preparation and, therefore, time.
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How is preparation measured?
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Premotor time+motor time = reaction time.
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Premotor time is the...
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cognitive portion of reaction time.
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Influences on preparation:
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Task and situation charcteristics.
Performer characteristics. |
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Task and situation characteristics influencing preparation:
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Number of response choices.
Predictability of the correct response choice. |
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Number of response choices:
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Increase alternatives=increase preparation.
Hick's Law RT=Klog2(N+1) |
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Predictability of the correct response choice:
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As the predictability of one of the response choices increases, reaction time decreases.
Identifying "cues"; athlete's "signals" or tendencies. If the same signal isn't there RT will increase. |
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T&SC
Probability of advanced info being correct: |
Cost-benefit trade off.
Biasing their prep. Non-correct cues create increased RT and mental confusion. |
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T&SC
Stimulus-response compatibility: |
Physical relationship between stimulus event and required response.
Spatial relationship. |
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T&SC
Foreperiod length regularity: |
Decreased RT with increased regularity of foreperiod.
e.g. Warning, one second wait, signal. |
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T&SC
Movement complexity: |
increased parts to the movement = increased RT.
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T&SC
Movement accuracy: |
As demands for movement accuracy increase = increase RT.
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T&SC
Repitition of movement: |
Repetition of the same response = decrease RT
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T&SC
Time between different responses to different signals: |
RT will be slower to second signal than to first signal.
"Faking" = increased RT due to psychological refractory period. |
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Performer Characteristics influencing Preparation
These characteristics are... |
situational.
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PC
These characteristics influence... |
preparation time and quality of performance.
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PC
Alertness of the performer: |
Warning signals decrease RT.
Short term maintenance of alertness: optimal foreperiod 1-4 seconds. Long term maintenance of alertness = vigilance. |
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PC
Attention focused on... |
signal vs. movement you're going to produce.
Focus on signal=decreased RT Focus on movement=increased RT |
