Kinematic analysis of spatial and temporal errors in rapid timing tasks.
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| Other Authors: | , , |
| Format: | Thesis Book |
| Language: | English |
| Published: |
1983.
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| Subjects: | |
| Online Access: | Link to ProQuest Copy Link to OAKTrust copy |
| Abstract: | The purpose of the present study was to investigate the relationship of kinematics to spatial and temporal timing error measurements in a rapid timing task. In Experiment 1, subjects performed 25 trials at each of 9 amplitude-MT conditions. Changes in movement amplitude were seen to be the primary influence on spatial errors and spatial errors increased directly with movement amplitude. Changes in MT were the primary influence on temporal errors and temporal errors increased directly with MT. However, the data from Experiment 1 indicated that movement amplitude and the interactive effects of amplitude and MT also substantially influenced temporal errors. In Experiment 2, subjects performed 25 trials at each of 8 amplitude-velocity conditions. Movement amplitude was, again, seen to provide the major influence on spatial errors and these errors increased directly with amplitude. Movement velocity provided the major influence on temporal errors in that these errors were seen to decrease with increased velocity. Temporal errors were not independent of the effects of movement amplitude or the interactive effects of amplitude and MT. Kinematic information revealed that the initial portion of all movements was relatively more variable than later portions, and that the rate of decrease of this relative variability across the movement duration was directly related to the rate of acceleration of the movement. In Experiment 3, subjects performed 25 trials at each of 4 amplitude-velocity conditions for each of 20 days. The data were consistent with earlier experiments relative to the effects of the independent variables on temporal error. However, the data from Experiment 3 indicated a substantial effect of movement velocity on spatial errors. Kinematic information indicated that extended practice altered the manner in which movements were carried out such that the movements were characterized by lower initial levels of relative variability and somewhat higher levels of variability later in the movement. In general, amplitude was seen to provide the major influence on spatial errors and MT and/or velocity were seen as the major influences on temporal error measures. However, spatial errors were not independent of MT and/or velocity nor were temporal errors independent of amplitude. |
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| Item Description: | "Major subject: Physical Education." Typescript (photocopy). Vita. |
| Physical Description: | x, 206 leaves : illustrations ; 29 cm |
| Bibliography: | Includes bibliographical references (leaves 118-122). |