PREMOTOR AND MOTOR COMPONENTS OF REACTION TIME
PREMOTOR AND MOTOR COMPONENTS OF REACTION TIME
复制标题
DOI：
10.1037/h0022634
复制
发表时间：
1966-01-01
影响因子：
--
通讯作者：
THOMPSON, LW
中科院分区：
文献类型：
--
作者：
BOTWINICK, J;THOMPSON, LW
根据肌电图和手指抬起反应的差异，将人类的反应时间（RT）分为运动前和运动部分。在测量54名受试者的简单听觉RTs时，记录了反应前臂伸肌的肌电图。运动前时间是从刺激出现到肌肉放电增加的这段时间，而运动时间是从动作电位的变化到手指抬起反应的这段时间。4个预备间隔（PI）， 0.5, 3.0, 6.0和15.0秒，用于规则和不规则序列。运动前时间和RT高度相关，并表现出可比较的变化，作为PI和系列类型的函数。运动时间与RT相关性较差，与PI和系列类型无关。从RT与PI的关系和级数的类型可以推断出集合是一个前运动过程。
Reaction time (RT) [in man] was fractionated into premotor and motor components based upon the difference between EMG and finger -lift responses. EMGs were recorded from the extensor muscle of the responding forearm during measurement of simple auditory RTs of 54 Ss [subjects]. The premotor time was that period from the presentation of the stimulus to the appearance of increased muscle firing, while the motor time was the period from this change in action potential to the finger-lift response. Four preparatory intervals (PI), 0.5, 3.0, 6.0, and 15.0 sec., were used in both a regular and irregular series. Premotor time and RT were highly correlated and showed comparable variations as a function of PI and type of series. Motor time was poorly correlated with RT and was independent of PI and type of series. It was concluded that set, as inferred from the relations between RT and PI and type of series, is a premotoric process.