Stuss D T, Stethem L L, Hugenholtz H, Picton T, Pivik J, Richard M T
School of Medicine (Neurology), University of Ottawa, Canada.
J Neurol Neurosurg Psychiatry. 1989 Jun;52(6):742-8. doi: 10.1136/jnnp.52.6.742.
Three groups of patients who had suffered head injury were compared with matched control subjects on reaction time (RT) tasks. Group I consisted of outpatients previously hospitalised for head injury of wide ranging degrees of severity, assessed at varying intervals after injury. Group II was composed of non-hospitalised mildly concussed patients. Group III was made up of head injured patients of varying degrees of severity assessed 7-10 months after initial hospitalisation for their injury. The reaction time tests were graded in difficulty, from a simple RT response to a complex choice RT test. In addition, subjects were compared in their ability to ignore redundant information during one of the choice RT tests. The findings indicate that traumatic brain injury causes slower information processing, deficits in divided attention, an impairment of focused attention, and inconsistency of performance.
将三组头部受伤患者与匹配的对照受试者进行反应时间（RT）任务对比。第一组由曾因不同严重程度头部受伤而住院的门诊患者组成，在受伤后的不同时间间隔进行评估。第二组由未住院的轻度脑震荡患者组成。第三组由在首次因伤住院7至10个月后接受评估的不同严重程度头部受伤患者组成。反应时间测试按难度分级，从简单的RT反应到复杂的选择RT测试。此外，在其中一项选择RT测试中，对受试者忽略冗余信息的能力进行了比较。研究结果表明，创伤性脑损伤会导致信息处理速度减慢、注意力分散缺陷、集中注意力受损以及表现不一致。
