Iverson Grant L, Lovell Mark R, Collins Michael W
University of British Columbia & Riverview Hospital, Vancouver, BC, Canada.
J Clin Exp Neuropsychol. 2005 Aug;27(6):683-9. doi: 10.1081/13803390490918435.
The purpose of this study was to examine the validity of ImPACT (Immediate Post-Concussion Assessment and Cognitive Testing), a computerized neuropsychological test battery, for measuring attention and processing speed in athletes with concussions. This was accomplished by comparing the computerized testing to a traditional neuropsychological measure, the Symbol Digit Modalities Test (SDMT). Participants were 72 amateur athletes who were seen within 21 days of sustaining a sports-related concussion (Mean = 9.4, SD = 5.4 days). As predicted, the SDMT correlated more highly with the Processing Speed and Reaction Time composites than the Verbal Memory and Visual Memory Composites from ImPACT. The composite scores from ImPACT and the SDMT were subjected to exploratory factor analysis, revealing a two-factor solution interpreted as Speed/Reaction Time and Memory. It appears as if the Processing Speed Composite, Reaction Time Composite, and SDMT are measuring a similar underlying construct in this sample of concussed amateur athletes.
本研究的目的是检验ImPACT（脑震荡后即刻评估与认知测试）这一计算机化神经心理测试组合在测量脑震荡运动员注意力和处理速度方面的有效性。这是通过将计算机化测试与传统神经心理测量方法——符号数字模态测试（SDMT）进行比较来实现的。参与者为72名业余运动员，他们在遭受与运动相关的脑震荡后21天内接受检查（平均 = 9.4天，标准差 = 5.4天）。正如预期的那样，与ImPACT的言语记忆和视觉记忆组合相比，SDMT与处理速度和反应时间组合的相关性更高。对ImPACT和SDMT的综合得分进行探索性因素分析，得出一个双因素解决方案，解释为速度/反应时间和记忆。在这个脑震荡业余运动员样本中，处理速度组合、反应时间组合和SDMT似乎在测量一个相似的潜在结构。
