人体前方不同位置目标点拾取运动时间特性的研究

Study on Characteristics of Pointing Movement Time for Targets with Different Position in Front of Human Body

目的研究人体前方不同位置目标点的拾取运动时间特性,探讨拾取运动的起始点和目标点位置对拾取时间的影响。方法设计并进行人体上肢拾取运动实验,记录拾取时间数据,通过数据分析,探讨人体上肢从平面板上不同起始点拾取前方不同位置目标点的运动时间特性。结果分析结果表明,起始点和目标点的位置改变对拾取时间有极大影响。结论右利手者拾取前方不同位置目标点时,目标点相对于起始点的方位不同,或起始点(目标圆)位置有变,都会造成拾取时间的显著差异。起始点在目标板上行方向的位置变化对拾取时间影响较大,在列方向的位置变化对拾取时间影响较小。对右利手者,当拾取距离一定时,从起始点向右上方45°目标点的拾取时间最短;起始点位于人体右侧时,该起始点所在目标圆总的拾取时间最短。

ObjectiveTo study the characteristics of pointing movement time for targets with different position in front of human body, to detect the effects of targets location on pointing movement time. Methods A pointing movement experiment of human arm was designed and carried out. By the statistic analysis of the experimental data, the relationship between pointing movement time and target position was discussed. Results It was shown that the starting point position and target position extremely affected the pointing movement time. Conclusion When a right-handed person touches the different targets, both the direction to target and the starting point position （target-circle location） would affect the pointing movement time extremely. When the position of the starting point changed by horizontal or vertical, the pointing movement time is more changeful by horizontal than that by vertical. To compare the pointing movement time for each target on a target-circle, the pointing movement time for right-upper target is the shortest, When the starting point is located on the right side of human body, all pointing movement time of that target-circle is the shortest.