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不同动作线索对 Beta 节律能量的调节

Regulation of the Beta Rhythm Energy Induced by Different Action Cues

中国心理学前沿 / 2020,2(5)：403-422  / 2020-05-13 2246 3765

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• 作者： 张玲俐      郝俊懿      廖渝*     
• 单位：

  苏州大学教育学院，苏州

• 关键词： Beta 节律；运动准备；动作表征
• Beta rhythm; Movement preparation; Action characterization
• 摘要： 运动区 Mu 节律与 Beta 节律是被同时看作与运动相关的脑电成分。虽 然在一定程度上，Mu 节律与 Beta 节律有很多相似的地方，但是，诸多证据表明， Mu 和 Beta 节律是两个具有不同意义的成分，Beta 独立于 Mu 节律，很可能具 有不一样的心理功能。而对于线索诱发的 Beta 节律的抑制而言，Beta 节律的抑 制可能是运动准备的指标。本实验采用延迟任务的变式，通过以单个动作和组 合动作为线索，以探究提示线索对随后产生的 Beta 能量的抑制的影响作用，从而判定 Beta 节律在运动准备的过程中扮演着怎样的一个角色。结果发现在线索 出现后，单个动作与组合动作线索所引发的 Beta 能量并没有显著差异，而在即 将执行动作之前的一段时间里单个动作与组合动作线索所引发的 Beta 能量有了 显著差异。这表明对提示线索的表征对随后产生的 Beta 能量的抑制的影响作用 是有一定的差异的，并且，随着时间进程的逐步推进，单个线索引发的 Beta 能 量的抑制的最大值越来越小，Beta 节律能量逐步上升；而组合动作在整个实验 过程中的线索消失后的阶段均处于一个较低的水平，没有越来越小的趋势。由 此我们进一步证实 Beta 节律解释了运动准备的过程，并参与了动作准备过程中 的动作表征。也解释了人脑可以对现有任务作最优化的运动准备状态。
• The Mu rhythm and the Beta rhythm of the motor area are considered to be associated with exercise-related EEG components. Although Mu rhythm has many similarities with the Beta rhythm to a certain extent, there are many evidences that Mu and Beta rhythms are two distinct components, Beta is independent of Mu rhythm and is likely to have different psychological functions. For the inhibition of the curative-induced Beta rhythm, the inhibition of the Beta rhythm may be an indicator of exercise preparation. In this experiment, the variational task is used to determine the effect of the cue on the subsequent suppression of Beta energy by using a single action and combination action to determine how the Beta rhythm plays in the process of motion preparation a role. It was found that there was no significant difference between the single action and the Beta energy caused by the combined action cue when the clue appeared, but the Beta energy produced by the single action and the combined action cue was significantly different for some time before the action was about to be performed. This suggests that there is a slight difference in the effect of the representation of the cue on the subsequent suppression of the Beta energy, and that, as the time progresses progressively, the maximum amount of Beta energy suppression caused by a single cue is increasing. The energy of the Beta rhythm is gradually rising; and the combined action in the course of the whole process of clues disappear after the stage are at a low level, no smaller and smaller trend. Thus we further confirm that the Beta rhythm explains the process of motion preparation and participates in the action representation in the action preparation process. It also explains that the human brain can optimize the state of motion for existing tasks.
• DOI： https://doi.org/10.35534/pc.0205028
• 引用： 张玲俐，郝俊懿，廖渝．不同动作线索对 Beta 节律能量的调节［J］．中国心理学前沿，2020，2（5）：403-422．
  https://doi.org/10.35534/pc.0205028