Department of Rehabilitation Sciences, School of Health Sciences, Nagoya University, 1-1-20 Daiko-minami, Higashi-ku, Nagoya 461-8673, Japan.
J Clin Neurosci. 2011 Dec;18(12):1687-9. doi: 10.1016/j.jocn.2011.05.007. Epub 2011 Oct 19.
In 11 healthy volunteers, we used event-related potentials (ERP) to investigate the frontal activity associated with imagining a beat. In imagery sessions, subjects were asked to imagine a rhythm during a silent recording period following a series of guide sounds played at 1 Hz. In control sessions, subjects were asked to imagine a vowel sound ("a") continuously during the silent recording period. In eight subjects, relative negative potentials were recorded during imagery sessions (compared with potentials in control sessions), with timing that was similar to that of the guide sounds. Activity in the left frontal region was more significant than that in other areas during beat imagination. These data indicate that a semantic strategy for simple rhythm imagery might involve temporary phasic activation in the left frontal area, although rhythm production and perception might be generated in the right side, as reported in previous studies.
在 11 名健康志愿者中，我们使用事件相关电位（ERP）来研究与想象节拍相关的额部活动。在想象过程中，要求受试者在一系列以 1 Hz 播放的引导音之后的安静记录期内想象节奏。在对照过程中，要求受试者在安静记录期内持续想象元音“a”。在 8 名受试者中，与对照过程中的电位相比，想象过程中记录到相对负电位（与对照过程中的电位相比），其时间与引导音的时间相似。在进行节拍想象时，左额区的活动比其他区域更为显著。这些数据表明，用于简单节奏想象的语义策略可能涉及左侧额区的暂时相位激活，尽管正如先前研究报道的那样，节奏产生和感知可能发生在右侧。
