Brain activity in near-death experiencers during a meditative state
Brain activity in near-death experiencers during a meditative state
复制标题
DOI：
10.1016/j.resuscitation.2009.05.006
复制
发表时间：
2009-09-01
期刊：
影响因子：
6.5
通讯作者：
Paquette, Vincent
中科院分区：
文献类型：
--
作者：
Beauregard, Mario;Courtemanche, Jerome;Paquette, Vincent
目的：测量濒死体验者在冥想状态下的大脑活动。方法：在两个独立的实验中，通过功能磁共振成像 (fMRI) 和脑电图 (EEG) 测量冥想状态和控制状态下的大脑活动。在冥想条件下，参与者被要求在精神上想象并在情感上与据称在“濒死体验”中遇到的“光的存在”建立联系。在控制条件下，参与者被要求在心里想象灯发出的光。结果：在功能磁共振成像实验中，在冥想条件下（与控制条件相比），在右脑干、右侧眶额皮质、右侧内侧前额叶皮质、右顶叶上小叶、左枕上回、左颞前极、左颞下回、左前岛叶、左颞下回发现了显着的激活位点。海马旁回和左侧黑质。在 EEG 实验中，相对于对照条件，冥想条件下的电极部位在 FP1、F7、F3、T5、P3、O1、FP2、F4、F8、P4、Fz、Cz 和 Pz 处显示出更大的 θ 功率。此外，在 FP1、F7、T3 和 FP2 处检测到较高的 α 功率，而在 FP2、F7、T4 和 T5 处检测到较高的 γ 功率。结论：结果表明，冥想状态与已知涉及积极情绪、视觉心理意象、注意力或精神体验的大脑区域的显着血流动力学和神经电变化相关。 (C) 2009 Elsevier Ireland Ltd. 保留所有权利。
Aim: To measure brain activity in near-death experiencers during a meditative state.Methods: In two separate experiments, brain activity was measured with functional magnetic resonance imaging (fMRI) and electroencephalography (EEG) during a Meditation condition and a Control condition. In the Meditation condition, participants were asked to mentally visualize and emotionally connect with the "being of light" allegedly encountered during their "near-death experience". In the Control condition, participants were instructed to mentally visualize the light emitted by a lamp.Results: In the fMRI experiment, significant loci of activation were found during the Meditation condition (compared to the Control condition) in the right brainstem, right lateral orbitofrontal cortex, right medial prefrontal cortex, right superior parietal lobule, left superior occipital gyrus, left anterior temporal pole, left inferior temporal gyrus, left anterior insula, left parahippocampal gyrus and left substantia nigra. In the EEG experiment, electrode sites showed greater theta power in the Meditation condition relative to the Control condition at FP1, F7, F3, T5, P3, O1, FP2, F4, F8, P4, Fz, Cz and Pz. In addition, higher alpha power was detected at FP1, F7, T3 and FP2, whereas higher gamma power was found at FP2, F7, T4 and T5.Conclusions: The results indicate that the meditative state was associated with marked hemodynamic and neuroelectric changes in brain regions known to be involved either in positive emotions, visual mental imagery, attention or spiritual experiences. (C) 2009 Elsevier Ireland Ltd. All rights reserved.