School of Sport and Health Sciences, University of Exeter, St Luke's Campus, Exeter, EX1 2LU, UK.
Exp Brain Res. 2019 Nov;237(11):2761-2766. doi: 10.1007/s00221-019-05642-8. Epub 2019 Sep 4.
Virtual reality (VR) is a promising tool for expanding the possibilities of psychological experimentation and implementing immersive training applications. Despite a recent surge in interest, there remains an inadequate understanding of how VR impacts basic cognitive processes. Due to the artificial presentation of egocentric distance cues in virtual environments, a number of cues to depth in the optic array are impaired or placed in conflict with each other. Moreover, realistic haptic information is all but absent from current VR systems. The resulting conflicts could impact not only the execution of motor skills in VR but also raise deeper concerns about basic visual processing, and the extent to which virtual objects elicit neural and behavioural responses representative of real objects. In this brief review, we outline how the novel perceptual environment of VR may affect vision for action, by shifting users away from a dorsal mode of control. Fewer binocular cues to depth, conflicting depth information and limited haptic feedback may all impair the specialised, efficient, online control of action characteristic of the dorsal stream. A shift from dorsal to ventral control of action may create a fundamental disparity between virtual and real-world skills that has important consequences for how we understand perception and action in the virtual world.
虚拟现实（VR）是一种很有前途的工具，可以扩展心理实验的可能性并实现沉浸式培训应用。尽管最近人们对此产生了浓厚的兴趣，但对于 VR 如何影响基本认知过程，人们的理解仍然不足。由于虚拟环境中自我中心距离线索的人为呈现，许多用于深度知觉的视线索受到损害或相互冲突。此外，当前的 VR 系统几乎没有提供真实的触觉信息。由此产生的冲突不仅可能影响 VR 中的运动技能执行，还可能引发对基本视觉处理的更深层次担忧，以及虚拟物体引发神经和行为反应的程度与真实物体相当。在这篇简短的综述中，我们概述了 VR 的新颖感知环境如何通过将用户从背侧模式控制转移来影响动作视觉，从而影响动作视觉。较少的双眼深度线索、冲突的深度信息和有限的触觉反馈都可能损害背侧流特有的、高效的、在线动作控制。从背侧到腹侧的动作控制的转变可能会在虚拟世界和现实世界的技能之间造成根本性的差异，这对我们理解虚拟世界中的感知和动作具有重要意义。
