Johansson Birgitta, Berglund Peter, Rönnbäck Lars
Department of Clinical Neuroscience and Rehabilitation, Institute of Neuroscience and Physiology, The Sahlgrenska Academy, University of Gothenburg, Sweden.
Brain Inj. 2009 Dec;23(13-14):1027-40. doi: 10.3109/02699050903421099.
Mental fatigue is a common symptom after brain injury. Its mechanisms are not fully understood and it has been difficult to find an objective way of measuring it. The aim was to compare cognitive tests with a new self-assessment questionnaire about mental fatigue.
Individuals reporting mental fatigue for 6 months or more after mild traumatic brain injury (MTBI) or traumatic brain injury (TBI) and controls were assessed for subjective fatigue, information processing speed, working memory and attention. Depression and anxiety were also assessed in the individuals with brain injury.
Individuals with MTBI or TBI reported significantly more problems with mental fatigue and related symptoms than controls. A significantly decreased information processing speed (digit symbol-coding, reading speed, trail making test) was found in those on sick leave due to MTBI or TBI, compared to controls. Divided attention was affected to a lesser extent and no effect was detected on working memory.
Mental fatigue after MTBI can last for several years. It can be profoundly disabling and affect working capacity as well as social activities. Subjective mental fatigue following brain injury is suggested to mainly correlate with objectively measured information processing speed.
精神疲劳是脑损伤后的常见症状。其机制尚未完全明确，且一直难以找到客观的测量方法。目的是将认知测试与一种关于精神疲劳的新的自我评估问卷进行比较。
对轻度创伤性脑损伤（MTBI）或创伤性脑损伤（TBI）后报告精神疲劳6个月或更长时间的个体以及对照组进行主观疲劳、信息处理速度、工作记忆和注意力评估。还对脑损伤个体的抑郁和焦虑情况进行了评估。
与对照组相比，MTBI或TBI个体报告的精神疲劳及相关症状问题明显更多。与对照组相比，因MTBI或TBI休病假的个体信息处理速度显著下降（数字符号编码、阅读速度、连线测验）。分散注意力受到的影响较小，对工作记忆未检测到影响。
MTBI后的精神疲劳可持续数年。它可能会严重致残，影响工作能力以及社交活动。脑损伤后的主观精神疲劳主要与客观测量的信息处理速度相关。
