Podcast
Questions and Answers
Reaction time is the interval between the onset of a signal and the completion of a response.
Reaction time is the interval between the onset of a signal and the completion of a response.
False (B)
Movement time refers to the duration from the start of a movement to its completion.
Movement time refers to the duration from the start of a movement to its completion.
True (A)
Discrimination reaction time occurs when a single signal requires multiple responses.
Discrimination reaction time occurs when a single signal requires multiple responses.
False (B)
Absolute error represents both the magnitude and direction of an error.
Absolute error represents both the magnitude and direction of an error.
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Constant error measures the amount of error and also indicates the direction of the deviation from a target.
Constant error measures the amount of error and also indicates the direction of the deviation from a target.
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Kinematics includes the study of forces involved in motion.
Kinematics includes the study of forces involved in motion.
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Velocity is calculated by multiplying displacement by time.
Velocity is calculated by multiplying displacement by time.
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Kinetics is primarily concerned with the role of force in causing motion.
Kinetics is primarily concerned with the role of force in causing motion.
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Flashcards
Reaction Time (RT)
Reaction Time (RT)
Interval from stimulus onset to response initiation.
Movement Time (MT)
Movement Time (MT)
Time from the start of movement to its completion.
Response Time
Response Time
Total time including reaction time and movement time.
Discrimination Reaction Time (DRT)
Discrimination Reaction Time (DRT)
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Absolute Error (AE)
Absolute Error (AE)
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Constant Error (CE)
Constant Error (CE)
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Variable Error (VE)
Variable Error (VE)
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Kinematics
Kinematics
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Study Notes
Reaction Time (RT)
- Reaction time (RT) is the interval between a stimulus and a response.
- It's the time span between a signal (e.g., "go" signal) and the response (e.g., swimmer's movement).
- Reaction time can be applied to situations with multiple signals and only one required response.
Types of Reaction Time Situations
- Movement time (MT): The duration from initiating a movement to completing it.
- Response time: The total time—reaction and movement time—from stimulus onset to response completion.
- Discrimination RT: Reaction time involving multiple signals, but requiring a response to only one specific signal; other signals require no response.
Error Measures
Assessing Error for One-Dimension Movement Goals
- Absolute error (AE): The absolute difference between the actual result/performance and the target or criterion.
- Constant error (CE): The signed difference between the result/performance and the target or criterion, indicating direction and magnitude of error. (+/- value).
- Variable error (VE): A quantification of the variability or stability in performance.
Assessing Error for Continuous Skills
- Root-mean-squared error (RMSE): An error measure for continuous skills, reflecting the difference between the actual performance curve and a criterion curve over a specific time interval.
Kinematic Measures
- Kinematics: The study of motion without considering forces or masses.
- Displacement: Change in spatial position of a limb or joint during a movement.
- Velocity: The rate of change in position over time (e.g., m/s). Calculated by dividing displacement by time.
- Acceleration: Change in velocity over time. Calculated by dividing the change in velocity by the change in time.
Kinetics
- Kinetics: The study of forces causing motion.
EMG (Electromyography)
- EMG: A technique to measure electrical activity in muscles.
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Description
Explore the concept of reaction time (RT) and its practical applications in physical activities, such as sports. Understand the differences between various types of reaction times, including movement time and discrimination RT, as well as error measures like absolute and constant error. Test your knowledge on how these concepts affect performance outcomes.
