Concussion does not impact intraindividual response time variability.
Concussion does not impact intraindividual response time variability.
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脑震荡不会影响个体反应时间的变异性。
DOI：
10.1037/0894-4105.21.6.796
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发表时间：
2007
期刊：
影响因子：
2.4
通讯作者：
Ferrara,MichaelS
中科院分区：
文献类型：
--
作者：
Sosnoff,JacobJ;Broglio,StevenP;Hillman,CharlesH;Ferrara,MichaelS
本研究考察了脑震荡对5种加工速度任务个体内变异的影响。44名成年人，包括22名脑震荡患者和22名健康的年龄和性别匹配的参与者，完成了头部脑震荡解决指数（DM埃尔朗格，DJ费尔德曼，KC库特纳，M。McCrea，2001）两次。该测验包括25次简单反应时测验、70次线索反应时测验、60次两种视觉再认测验和30次符号扫描测验。脑震荡的参与者完成了损伤前的基线评估，并在损伤诊断后48小时内进行了重新测试。非脑震荡参与者在初始评估后45天重新测试。计算每个个体的平均响应时间（RT）、标准差和响应准确度。总体而言，脑震荡患者在所有任务中的RT都有所增加，并且在CuRT中的准确性较低。所有任务的RT变异性在脑震荡个体中升高，但在随访时控制平均RT消除了组间差异。这些发现表明，脑震荡个体的反应时间变异性增加与处理时间增加成正比。因此，RT变异性不是脑震荡后认知功能障碍的唯一标识符。这些结果强调了短暂性脑损伤与慢性疾病相比具有显着不同的神经生物学后果。（PsycInfo数据库记录（c）2016阿帕，保留所有权利）
This investigation examined the effect of concussion on intraindividual variability in 5 processing speed tasks. Forty-four adults, including 22 concussed and 22 healthy age-and gender-matched participants, completed the Headminder Concussion Resolution Index (DM Erlanger, DJ Feldman, KC Kutner, & M. McCrea, 2001) twice. The test consists of a series of tasks including 25 trials of simple response time task, 70 trials of cued response time task (CuRT), 60 trials each for 2 visual recognition tasks, and 30 trials of symbol scanning task. Concussed participants completed a preinjury baseline assessment and were retested within 48 hours of injury diagnosis. The nonconcussed participants were retested 45 days after initial assessment. Average response time (RT), standard deviation, and response accuracy were calculated for each individual. Overall, concussed individuals had increased RTs across all tasks and were less accurate in the CuRT. RT variability for all tasks was elevated in concussed individuals, but controlling for mean RT at follow-up eliminated group differences. These findings indicate that response-time-variability increases in concussed individuals are proportional to processing-time increases. As such, RT variability is not a unique identifier of cognitive dysfunction following concussion. These results highlight that transient brain injury has significantly different neurobiological consequences than chronic conditions have.(PsycINFO Database Record (c) 2016 APA, all rights reserved)