KINEMATICS OF TYPING - PARALLEL CONTROL OF THE 2 HANDS
KINEMATICS OF TYPING - PARALLEL CONTROL OF THE 2 HANDS
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DOI：
10.1152/jn.1992.67.5.1264
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发表时间：
1992-05-01
影响因子：
2.5
通讯作者：
SOECHTING, JF
中科院分区：
文献类型：
--
作者：
FLANDERS, M;SOECHTING, JF
1.有经验的触摸打字员被要求打字，其中只有一个字母是用一只手打的，其余的字母是用另一只手打的，2.每个手指的平移和旋转运动是从反射标记的位置通过光电计算得出的。根据这些标记的位置计算两个手腕的平移和旋转运动。通常，当受试者输入一个字母时，手部的所有手指都在运动，手腕也是如此。对于每个字母，手指和手腕运动的整体运动模式是高度可重复的。因此，击键运动学形成了由特定对象键入的特定字母的可重复签名。在击键过程中，另一只手也在运动，正在输入前面和后面的字母。在此期间，两个手腕的运动和双手对应的手指的运动是不相关的。因为击键运动学是高度可重复的，并且独立于对侧手的移动，所以每次击键代表打字运动的基本元素。因此，这些结果为确定组合击键序列以输入单词的过程提供了基础。
1. Experienced touch typists were asked to type words in which only a single letter was typed by one hand, while the remaining letters were typed with the other hand,2. Translational and rotational motion of each finger was computed optoelectronically from the location of reflective markers. Translational and rotational motion of both wrists was also computed from the locations of these markers.3. Typically, when a subject typed a single letter, all of the fingers of the hand were in motion, as was the wrist. For each letter, this overall kinematic pattern of finger and wrist motion was highly repeatable. Thus the keystroke kinematics formed a repeatable signature for a particular letter typed by a particular subject.4. During the keystroke the other hand was also in motion, typing the preceding and succeeding letters. During this period the motion of the two wrists and the motions of corresponding fingers of both hands was uncorrelated.5. Because the keystroke kinematics are highly repeatable and independent of the movement of the contralateral hand, each keystroke represents a fundamental element of the typing movement. Thus these results provide a basis for determining the processes whereby sequences of keystrokes are assembled to type words.