Flanagin Virginia L, Wutte Magdalena, Glasauer Stefan, Jahn Klaus
Department of Neurology, Klinikum Grosshadern, Ludwig-Maximilians-University, Munich, Germany.
Ann N Y Acad Sci. 2009 May;1164:372-5. doi: 10.1111/j.1749-6632.2009.03844.x.
It is unclear how subjects perceive and process self-motion cues in virtual reality environments. Movement could be perceived as passive, akin to riding in a car, or active, such as walking down the street. These two very different types of self-motion were studied here using motor imagery in fMRI. In addition, the relative importance of visual and proprioceptive training cues was examined. Stronger activations were found during proprioceptive motor imagery compared with visual motor imagery, suggesting that proprioceptive signals are important for successful imagined movement. No significant activations were found during active movement with proprioceptive training. Passive locomotion, however, was correlated with activity in an occipital-parietal and parahippocampal cortical network, which are the same regions found during navigation with virtual reality stimuli.
目前尚不清楚受试者在虚拟现实环境中如何感知和处理自我运动线索。运动可能被视为被动的，类似于乘车，或者是主动的，例如下街行走。在这里，我们使用功能磁共振成像中的运动想象来研究这两种截然不同的自我运动类型。此外，还研究了视觉和本体感觉训练线索的相对重要性。与视觉运动想象相比，在本体感觉运动想象期间发现了更强的激活，这表明本体感觉信号对于成功的想象运动很重要。在进行本体感觉训练的主动运动期间未发现明显的激活。然而，被动运动与枕顶叶和海马旁皮质网络的活动相关，这些区域与在虚拟现实刺激导航期间发现的区域相同。
