Bjørklund R A
Department of Physiology, National Institute of Occupational Health, Oslo, Norway.
Percept Mot Skills. 1991 Apr;72(2):663-73. doi: 10.2466/pms.1991.72.2.663.
Reaction time (RT) and movement time (MT) are measured in two conditions, a key-press and a key-release condition. The latter makes a greater demand on perceptual feedback than the former. RT increases in the key-release condition and a fraction of MT denoted key-press time (KT) decreases in the key-press condition. It is argued that KT of a response button in the simple reaction-time experiment may serve as a proper measure of the motor component. The foreperiod prior to onset of the reacting stimulus affects RT, KT, and MT, suggesting that preparatory set or expectancy influences both the perceptual and motor components of simple human performance. The results indicate that the relation of RT and MT depends upon methodological conditions.
反应时间（RT）和动作时间（MT）在两种条件下进行测量，即按键条件和按键释放条件。与前者相比，后者对感知反馈的要求更高。在按键释放条件下RT增加，而在按键条件下，MT的一部分即按键时间（KT）减少。有人认为，简单反应时实验中反应按钮的KT可作为运动成分的合适测量指标。反应刺激开始前的前间隔会影响RT、KT和MT，这表明准备状态或预期会影响简单人类行为的感知和运动成分。结果表明，RT和MT的关系取决于方法学条件。
