Sprenger Andreas, Lappe-Osthege Maren, Talamo Silke, Gais Steffen, Kimmig Hubert, Helmchen Christoph
Department of Neurology, University Lübeck, Ratzeburger Allee, Ratzeburger Allee 160, D-23538 Lübeck, Germany.
Neuroreport. 2010 Jan 6;21(1):45-9. doi: 10.1097/WNR.0b013e32833370b2.
It has been hypothesized that rapid eye movements (REMs) during sleep reflect the process of looking around in dreams. We questioned whether REMs differ from eye movements in wakefulness while imagining previously seen visual stimuli (dots, static images, videos). After looking at these stimuli individuals were asked to remember and imagine them. Subsequently, their REMs were recorded at the sleep laboratory. Kinematic parameters of REMs were similar to saccadic eye movements to remembered stimuli with closed eyes, irrespective of the stimulus type. In contrast, peak velocity of eye movements with open eyes was similar to REMs when semantic, but not nonsemantic, contents were imagined. Thus, REMs may be related to exploratory saccadic behaviour in the awake to remember visual stimuli.
有人提出假说认为，睡眠期间的快速眼动（REM）反映了梦境中四处张望的过程。我们质疑在想象之前看到的视觉刺激（点、静态图像、视频）时，快速眼动是否与清醒时的眼球运动有所不同。在观看这些刺激物之后，要求个体记住并想象它们。随后，在睡眠实验室记录他们的快速眼动。无论刺激类型如何，快速眼动的运动学参数与闭眼时对记忆刺激的扫视眼球运动相似。相比之下，当想象语义内容而非非语义内容时，睁眼时眼球运动的峰值速度与快速眼动相似。因此，快速眼动可能与清醒时为记住视觉刺激而进行的探索性扫视行为有关。
