Ashworth Joel, Ciorciari Joseph, Stough Con
Biology of Individual Differences Research Unit, Brain Sciences Institute, Swinburne University of Technology, Melbourne, Australia.
J Nerv Ment Dis. 2008 May;196(5):411-6. doi: 10.1097/NMD.0b013e31816ff384.
Dissociation involves a disruption of typically integrated functions including consciousness, information perception, and memory; however, dissociation may not always be of a pathologic nature. Increasingly, studies are identifying relations between inconsistent handedness, mixed hemispheric lateralization, and dissociative symptomatology in both clinical and nonclinical populations. The current study explored whether a nonclinical sample of individuals scoring high in dissociation would display an inconsistent handedness in conjunction with a left hemispheric lateralization as measured by electroencephalography. Twenty-seven participants (12 males and 15 females) aged between 20 and 59 years (M = 29.1 year, SD = 11.2 years), completed the Dissociative Experiences Scale and Waterloo Handedness Questionnaire Revised after determining laterality. As predicted, inconsistently handed participants scoring high in dissociation displayed left hemispheric lateralization across frontal, central, and parietal regions. Conversely, right lateralization was found within Delta frequency band across temporal regions. The study provides a good framework for future research investigating the neurophysiological correlates underpinning dissociative symptomatology.
分离涉及到对包括意识、信息感知和记忆等通常整合功能的破坏；然而，分离并不总是具有病理性。越来越多的研究正在确定临床和非临床人群中不一致的利手、混合半球侧化与分离症状之间的关系。当前的研究探讨了在分离测试中得分高的非临床个体样本是否会表现出与通过脑电图测量的左半球侧化相关的不一致利手情况。27名年龄在20至59岁之间（M = 29.1岁，SD = 11.2岁）的参与者（12名男性和15名女性），在确定利手性后完成了分离体验量表和修订后的滑铁卢利手问卷。正如预测的那样，在分离测试中得分高的不一致利手参与者在额叶、中央和顶叶区域表现出左半球侧化。相反，在颞叶区域的δ频段内发现了右半球侧化。该研究为未来调查分离症状背后的神经生理相关性的研究提供了一个良好的框架。
