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A Virtual Out-of-Body Experience Reduces Fear of Death

机译:虚拟的体外体验可减少对死亡的恐惧

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摘要

Immersive virtual reality can be used to visually substitute a person's real body by a life-sized virtual body (VB) that is seen from first person perspective. Using real-time motion capture the VB can be programmed to move synchronously with the real body (visuomotor synchrony), and also virtual objects seen to strike the VB can be felt through corresponding vibrotactile stimulation on the actual body (visuotactile synchrony). This setup typically gives rise to a strong perceptual illusion of ownership over the VB. When the viewpoint is lifted up and out of the VB so that it is seen below this may result in an out-of-body experience (OBE). In a two-factor between-groups experiment with 16 female participants per group we tested how fear of death might be influenced by two different methods for producing an OBE. In an initial embodiment phase where both groups experienced the same multisensory stimuli there was a strong feeling of body ownership. Then the viewpoint was lifted up and behind the VB. In the experimental group once the viewpoint was out of the VB there was no further connection with it (no visuomotor or visuotactile synchrony). In a control condition, although the viewpoint was in the identical place as in the experimental group, visuomotor and visuotactile synchrony continued. While both groups reported high scores on a question about their OBE illusion, the experimental group had a greater feeling of disownership towards the VB below compared to the control group, in line with previous findings. Fear of death in the experimental group was found to be lower than in the control group. This is in line with previous reports that naturally occurring OBEs are often associated with enhanced belief in life after death.
机译:身临其境的虚拟现实可用于在视觉上替代从第一人称视角观察到的真实大小的虚拟身体(VB)来替代一个人的真实身体。使用实时运动捕捉,可以将VB编程为与真实身体同步运动(视觉运动同步),并且可以通过在实际身体上进行相应的触觉刺激来感知虚拟物体撞击VB(视觉触觉同步)。这种设置通常会引起对VB所有权的强烈感知错觉。当视点被抬起并从VB移出以便可以在下面看到时,这可能会导致体外体验(OBE)。在每组16名女性参与者的两因素小组间实验中,我们测试了两种不同的OBE产生方法可能会对死亡恐惧产生怎样的影响。在最初的实施阶段中,两组都经历了相同的多感官刺激,具有强烈的身体归属感。然后将视点抬起并放在VB后面。在实验组中,一旦视点脱离了VB,就不再有任何联系(没有视觉运动或视觉触觉同步性)。在对照条件下,尽管视点与实验组处于同一位置,但视觉运动和触觉同步仍在继续。虽然两组都在有关其OBE幻觉的问题上得分较高,但与先前的结果相一致,实验组与对照组相比,对下面的VB的归属感更大。实验组的死亡恐惧感低于对照组。这与以前的报道一致,即自然发生的OBE通常与死亡后的生活信念增强有关。

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