Grondin S
Université Laurentienne, Sudbury, Ontario, Canada.
Percept Psychophys. 1992 Sep;52(3):345-50. doi: 10.3758/bf03209151.
One important factor influencing the accuracy of a timing estimate is the counting activity that a human subject may adopt. In the present study, the usefulness of this activity is evaluated with a strategy whereby subjects are presented segmented and nonsegmented intervals, before they start to produce a series of these intervals, using a finger-tapping procedure. The results are mainly analyzed in the light of Killeen and Weiss's (1987) model, which addressed this question of counting. The results revealed that (1) a scalar property gives a better description of the pacemaker activity than does a Poisson process, and (2) an optimal timing performance would be reached with the utilization of subintervals with an approximate value of 400 msec. Finally, the discussion also incorporates an analysis of the variability related to the motor component in a tapping task.
影响时间估计准确性的一个重要因素是人类受试者可能采用的计数活动。在本研究中，通过一种策略评估了这种活动的有效性，即在受试者开始使用手指敲击程序产生一系列间隔之前，向他们呈现分段和非分段的间隔。主要根据基林和韦斯（1987）的模型分析结果，该模型解决了计数问题。结果表明：（1）与泊松过程相比，标量特性能更好地描述起搏器活动；（2）使用近似值为400毫秒的子间隔可达到最佳时间性能。最后，讨论还包括对敲击任务中与运动成分相关的变异性的分析。
