University of Birmingham.
University of Kent.
J Cogn Neurosci. 2018 Nov;30(11):1577-1589. doi: 10.1162/jocn_a_01304. Epub 2018 Jul 13.
Forming a memory often entails the association of recent experience with present events. This recent experience is usually an information-rich and dynamic representation of the world around us. We here show that associating a static cue with a previously shown dynamic stimulus yields a detectable, dynamic representation of this stimulus. We further implicate this representation in the decrease of low-frequency power (∼4-30 Hz) in the ongoing EEG, which is a well-known correlate of successful memory formation. The reappearance of content-specific patterns in desynchronizing brain oscillations was observed in two sensory domains, that is, in a visual condition and in an auditory condition. Together with previous results, these data suggest a mechanism that generalizes across domains and processes, in which the decrease in oscillatory power allows for the dynamic representation of information in ongoing brain oscillations.
形成记忆通常需要将近期的经验与当前的事件联系起来。这种近期的经验通常是我们周围世界的一个信息丰富和动态的表示。我们在这里表明，将一个静态的提示与之前显示的动态刺激相关联，会产生这个刺激的可检测的动态表示。我们进一步暗示这种表示与正在进行的 EEG 中的低频功率（约 4-30 Hz）的降低有关，这是成功记忆形成的一个众所周知的相关物。在两个感觉域中，即视觉条件和听觉条件下，观察到内容特异性模式在去同步化脑振荡中的再现。结合以前的结果，这些数据表明了一种跨域和过程的普遍机制，其中振荡功率的降低允许信息在正在进行的脑振荡中动态表示。
