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Wisconsin card sorting test synchronizes the prefrontal, temporal and posterior association cortex in different frequency ranges and extensions.

机译:威斯康星州卡片分类测试可在不同的频率范围和扩展范围内同步前额叶,颞叶和后叶联想皮层。

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Current findings show some brain regions consistently related to performance of the Wisconsin Card Sorting Test (WCST). An increase of local cerebral blood flow or metabolic demands has been detected in those regions. Functional integration of the neuronal circuits that subserve the task performance, based upon the identification of the oscillations and their distributed cerebral sources, has not been accomplished previously. The event-related tonic oscillations within a period of 2,000 msec after the stimulus onset and the probable neural substrate were evaluated in healthy volunteers by variable-resolution brain electrical tomography (VARETA). The WCST induced a significant increase of delta, theta, beta-2, and gamma oscillations, but decrease of alpha. Areas such as the frontal subregions, temporal, cingulate, parahippocampal, parietal, occipitotemporal cortex, and occipital poles showed modified activity during the task, with EEG spectral band selectivity as well as some overlapping among them. Frontal and temporal regions generated the delta/theta oscillations. Additionally, the occipitotemporal and parietal regions were the source of the delta activity, lacking theta activation. The parietal region also showed tonic alpha, beta-2 and gamma changes. These data imply that different processes have been simultaneously mediated during task performance. Relationships among the individual bands, the neural substrata and the specific cognitive process that support the task were established. The selectively distributed delta, theta, alpha, beta-2 and gamma oscillations reflect communication networks through variable populations of neurons, with functional relations to the working memory functions and the information processing that subserve the WCST performance. Hum. Brain Mapping 17:37-47, 2002.
机译:当前的发现表明,某些大脑区域与威斯康星卡片分类测试(WCST)的性能始终相关。在这些区域中已经检测到局部脑血流量或代谢需求增加。先前尚未完成基于振荡及其分布的脑源的识别的,辅助任务执行的神经元回路的功能集成。在健康的志愿者中,通过可变分辨率脑电层析成像(VARETA)评估了在刺激发作和可能的神经基质发生后2,000毫秒内与事件有关的强直振荡。 WCST导致δ,θ,β-2和γ振荡明显增加,但α减小。额叶次区域,颞叶,扣带状,海马旁,顶叶,枕颞皮层和枕极等区域在任务过程中显示出修饰的活动,具有EEG谱带选择性以及它们之间有些重叠。额叶和颞叶区域产生δ/θ振荡。另外,枕颞和顶区是δ活动的来源,缺乏θ激活。顶叶区域也显示出强直性α,β-2和γ的变化。这些数据表明在任务执行期间已同时调解了不同的过程。建立了支持任务的各个乐队,神经下层和特定认知过程之间的关系。选择性分布的δ,θ,α,β-2和γ振荡通过可变的神经元种群反映通信网络,与工作记忆功能和信息处理的功能相关,这些信息有助于WCST性能。哼。 Brain Mapping 17:37-47,2002。

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