Zhang Lelin, Chi Yu Mike, Edelstein Eve, Schulze Jurgen, Gramann Klaus, Velasquez Alvaro, Cauwenberghs Gert, Macagno Eduardo
University of California San Diego, La Jolla, CA 92093, USA.
Annu Int Conf IEEE Eng Med Biol Soc. 2010;2010:4464-7. doi: 10.1109/IEMBS.2010.5625969.
Wireless physiological/neurological monitoring in virtual reality (VR) offers a unique opportunity for unobtrusively quantifying human responses to precisely controlled and readily modulated VR representations of health care environments. Here we present such a wireless, light-weight head-mounted system for measuring electrooculogram (EOG) and electroencephalogram (EEG) activity in human subjects interacting with and navigating in the Calit2 StarCAVE, a five-sided immersive 3-D visualization VR environment. The system can be easily expanded to include other measurements, such as cardiac activity and galvanic skin responses. We demonstrate the capacity of the system to track focus of gaze in 3-D and report a novel calibration procedure for estimating eye movements from responses to the presentation of a set of dynamic visual cues in the StarCAVE. We discuss cyber and clinical applications that include a 3-D cursor for visual navigation in VR interactive environments, and the monitoring of neurological and ocular dysfunction in vision/attention disorders.
虚拟现实（VR）中的无线生理/神经监测为在不引人注意的情况下量化人类对精确控制且易于调节的医疗保健环境VR表示的反应提供了独特机会。在此，我们展示了这样一种无线、轻便的头戴式系统，用于测量在加州大学圣地亚哥分校加利福尼亚电信与信息技术研究所（Calit2）的StarCAVE（一个五面沉浸式三维可视化VR环境）中交互和导航的人类受试者的眼电图（EOG）和脑电图（EEG）活动。该系统可以轻松扩展以纳入其他测量，如心脏活动和皮肤电反应。我们展示了该系统在三维空间中跟踪注视焦点的能力，并报告了一种新颖的校准程序，用于根据对StarCAVE中一组动态视觉线索呈现的反应来估计眼球运动。我们讨论了网络和临床应用，包括用于VR交互环境中视觉导航的三维光标，以及对视觉/注意力障碍中的神经和眼部功能障碍的监测。
