Brunia C H, Vingerhoets A J
Biol Psychol. 1981 Dec;13:261-9. doi: 10.1016/0301-0511(81)90041-7.
Nine right-handed subjects performed an experiment in which the recording of the readiness potential (RP) and of the contingent negative variation (CNV) was combined. A microswitch was pressed by a voluntary foot or finger movement. 4 sec later a visual stimulus was presented, to which the subject had to respond as quickly as possible by making the same movement. Four electrode positions were used: C3, C4, C'3 and C'4, the latter two in between Cz and C3 or C4, respectively. The RPs showed larger amplitudes over the hemisphere, contralateral to the finger movement. Moreover, although not significant, RPs showed larger amplitudes over the hemisphere, ipsilateral to the foot movement. Late CNV waves were larger at C3 prior to a finger response and at C'4 prior to a foot response. This result is an argument for the hypothesis of a common underlying mechanism of RP and CNV late waves. Moreover, it suggests that motor preparation is a selective process which is related to the activation of a specific area in the motor cortex.
九名右利手受试者进行了一项实验，该实验将准备电位（RP）和伴随负变化（CNV）的记录相结合。通过自主的足部或手指运动按下一个微动开关。4秒后呈现一个视觉刺激，受试者必须通过做出相同的运动尽快做出反应。使用了四个电极位置：C3、C4、C'3和C'4，后两个位置分别在Cz与C3或C4之间。RP在与手指运动对侧的半球上显示出更大的振幅。此外，虽然不显著，但RP在与足部运动同侧的半球上也显示出更大的振幅。在手指反应之前，C3处的晚期CNV波更大；在足部反应之前，C'4处的晚期CNV波更大。这一结果支持了RP和CNV晚期波存在共同潜在机制这一假说。此外，它表明运动准备是一个与运动皮层中特定区域的激活相关的选择性过程。
