Matsuoka Keiko, Kotani Izumi, Yamasato Michihiko
Kamata TERAKOYA, Ota-ku, Tokyo, Japan.
Brain Inj. 2012;26(13-14):1723-30. doi: 10.3109/02699052.2012.698789. Epub 2012 Jul 13.
To investigate differences between individuals with traumatic brain injury (TBI) and a control group regarding quantitative characteristics of narrative discourse including correct information units (CIUs). The secondary objective was to explore cognitive correlations with narrative discourse measurements.
Case-control study.
Twenty-six individuals with TBI and 24 age-, gender- and education-matched subjects without brain injury were examined. Four-frame comic strips were used for elicitation of narrative discourse. Six variables of discourse measurements (total time, total number of units and CIUs, units per time, CIUs per time and CIUs per unit) were calculated. The relationships between the 6 discourse measurements and results of standard cognitive tests were also examined, including logical memory, working memory and executive functions.
The time efficiency for narrative discourse (i.e. total time, units per time and CIUs per time) was significantly decreased in the TBI group. Moreover, time efficiency was significantly related to measurements of working memory and executive function. The TBI group did not differ from the control group with regard to total number of units and CIUs and CIUs per unit.
Decreased time efficiency is the most critical characteristic of narrative discourse in individuals with TBI.
研究创伤性脑损伤（TBI）患者与对照组在叙事话语定量特征方面的差异，包括正确信息单元（CIU）。次要目标是探索与叙事话语测量的认知相关性。
病例对照研究。
对26名TBI患者和24名年龄、性别和教育程度匹配的无脑损伤受试者进行检查。使用四格漫画来引出叙事话语。计算话语测量的六个变量（总时间、单元总数和CIU、每时间单元数、每时间CIU数和每单元CIU数）。还检查了这六个话语测量与标准认知测试结果之间的关系，包括逻辑记忆、工作记忆和执行功能。
TBI组叙事话语的时间效率（即总时间、每时间单元数和每时间CIU数）显著降低。此外，时间效率与工作记忆和执行功能的测量显著相关。TBI组在单元总数、CIU总数和每单元CIU数方面与对照组没有差异。
时间效率降低是TBI患者叙事话语最关键的特征。
