Objective . This study aims to investigate alterations of brain connectivity using multivariate electroencephalographic data to provide new insights of the brain connectivity dynamics of dystonia. Approach . We recorded electroencephalography (EEG) of patients with right upper limb idiopathic focal dystonia and paired controls during resting state, writing-from-memory, and finger-tapping tasks. We applied power spectrum analyses considering the mu, beta and gamma rhythms of the motor cortex and analyzed brain connectivity networks and microstates (MS). Main results. The power spectra results showed that patients had a loss of desynchronization of the beta rhythm during the writing task. We observed differences in the structure of the connective core in beta rhythm, as well as, in the intensity of the patient’s hubs observed with basis in path length measures in mu and beta rhythms. Abnormalities were also identified in MS of default mode networks of patients ...

中文翻译：

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运动任务期间肌张力障碍患者的脑连接

客观的 。本研究旨在使用多元脑电图数据研究大脑连接的变化，以提供对肌张力障碍的大脑连接动力学的新见解。方法 。我们记录了右上肢特发性局灶性肌张力障碍患者的脑电图 (EEG)，并在静息状态、记忆写作和手指敲击任务期间配对对照。我们应用了功率谱分析，考虑了运动皮层的 mu、beta 和 gamma 节律，并分析了大脑连接网络和微状态 (MS)。主要结果。功率谱结果显示，患者在写作任务期间失去了 β 节律的不同步。我们观察到β节律中连接核心结构的差异，以及，在以 mu 和 beta 节律为基础的路径长度测量基础上观察到的患者中枢的强度。在患者的默认模式网络的 MS 中也发现了异常...