创伤性脑损伤后人类空间导航缺陷在竞技场迷宫（一种虚拟莫里斯水迷宫）中表现出来。
Human spatial navigation deficits after traumatic brain injury shown in the arena maze, a virtual Morris water maze.
作者信息
Skelton Ronald W, Ross Shelley P, Nerad Ludek, Livingstone Sharon A
机构信息
Department of Psychology, University of Victoria, Victoria, BC, Canada.
出版信息
Brain Inj. 2006 Feb;20(2):189-203. doi: 10.1080/02699050500456410.
OBJECTIVE
Survivors of traumatic brain injury (TBI) often have spatial navigation deficits. This study examined such deficits and conducted a detailed analysis of navigational behaviour in a virtual environment.
DESIGN
TBI survivors were tested in a computer simulation of the Morris water maze task that required them to find and remember the location of an invisible platform that was always in the same location. A follow-up questionnaire assessed everyday spatial ability.
METHOD
Fourteen survivors of moderate-to-severe TBI were compared to 12 non-injured participants.
RESULTS
TBI survivors navigated to a visible platform but could not learn the location of the invisible platform. The difference between TBI survivors and uninjured participants was best indicated by two new dependent variables, path efficacy and spatial scores.
CONCLUSION
This study confirms the capacity of virtual environments to reveal spatial navigation deficits after TBI and establishes the best way to identify such deficits.
目的
创伤性脑损伤（TBI）幸存者常常存在空间导航缺陷。本研究对这些缺陷进行了检查，并在虚拟环境中对导航行为进行了详细分析。
设计
对TBI幸存者在莫里斯水迷宫任务的计算机模拟中进行测试，要求他们找到并记住始终位于同一位置的隐形平台的位置。一份后续问卷评估日常空间能力。
方法
将14名中度至重度TBI幸存者与12名未受伤参与者进行比较。
结果
TBI幸存者能够导航到可见平台，但无法学习隐形平台的位置。TBI幸存者与未受伤参与者之间的差异通过两个新的因变量——路径效能和空间得分——得到了最佳体现。
结论
本研究证实了虚拟环境揭示TBI后空间导航缺陷的能力，并确定了识别此类缺陷的最佳方法。
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