Frontal midline theta rhythm and gamma power changes during focused attention on mental calculation: an MEG beamformer analysis.
Frontal midline theta rhythm and gamma power changes during focused attention on mental calculation: an MEG beamformer analysis.
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DOI：
10.3389/fnhum.2014.00406
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发表时间：
2014
影响因子：
2.9
通讯作者：
Takeda M
中科院分区：
文献类型：
--
作者：
Ishii R;Canuet L;Ishihara T;Aoki Y;Ikeda S;Hata M;Katsimichas T;Gunji A;Takahashi H;Nakahachi T;Iwase M;Takeda M
额叶中线Theta节律(FMθ)在脑电记录中广泛分布于内侧前额叶区域，表明注意力集中。尽管心理计算经常被用作一项需要注意的任务，但在FMθ实验中，很少有关于计算相关激活的报道。在这项研究中，我们使用空间过滤的脑磁图和排列分析来精确定位FMθ的磁对应物的皮质生成器，以及与心算处理(即算术减法)相关的其他振荡活动来源。我们的结果证实并扩展了早期的脑电/脑磁图研究，即在心算过程中，FM-θ产生于背侧、前扣带回和邻近的内侧前额叶皮质。心理减法也与伽马事件相关的同步有关，作为激活的指标，在右顶叶区域减去基本的数字加工和基于数字的空间注意。伽马事件相关的去同步化出现在右侧前额叶皮质，可能代表了一种中断神经活动的机制，这种机制可能会干扰正在进行的认知任务。
Frontal midline theta rhythm (Fmθ) appears widely distributed over medial prefrontal areas in EEG recordings, indicating focused attention. Although mental calculation is often used as an attention-demanding task, little has been reported on calculation-related activation in Fmθ experiments. In this study we used spatially filtered MEG and permutation analysis to precisely localize cortical generators of the magnetic counterpart of Fmθ, as well as other sources of oscillatory activity associated with mental calculation processing (i.e., arithmetic subtraction). Our results confirmed and extended earlier EEG/MEG studies indicating that Fmθ during mental calculation is generated in the dorsal anterior cingulate and adjacent medial prefrontal cortex. Mental subtraction was also associated with gamma event-related synchronization, as an index of activation, in right parietal regions subserving basic numerical processing and number-based spatial attention. Gamma event-related desynchronization appeared in the right lateral prefrontal cortex, likely representing a mechanism to interrupt neural activity that can interfere with the ongoing cognitive task.
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影响因子：
2.9
作者：
Doesburg SM;Moiseev A;Herdman AT;Ribary U;Grunau RE
通讯作者：
Grunau RE
DOI：
10.1073/pnas.96.14.8301
发表时间：
1999-07-06
影响因子：
11.1
作者：
Garavan, H;Ross, TJ;Stein, EA
通讯作者：
Stein, EA
影响因子：
5.7
作者：
Grabner, Roland H.;Ansari, Daniel;Neuper, Christa
通讯作者：
Neuper, Christa
影响因子：
3.7
作者：
Gruber, O;Indefrey, P;Kleinschmidt, A
通讯作者：
Kleinschmidt, A
影响因子：
5.7
作者：
Herdman, AT;Wollbrink, A;Pantev, C
通讯作者：
Pantev, C