Information transfer during a transitive reasoning task.
Information transfer during a transitive reasoning task.
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DOI：
10.1007/s10548-010-0158-6
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发表时间：
2011-03
期刊：
影响因子：
2.7
通讯作者：
Blinowska, Katarzyna
中科院分区：
文献类型：
--
作者：
Brzezicka, Aneta;Kaminski, Maciej;Kaminski, Jan;Blinowska, Katarzyna
近20年来，人们一直在通过功能磁共振成像（fMRI）研究参与推理过程的大脑区域的定位。众所周知，对于推理的传递形式，额叶和顶叶区域最为活跃。相比之下，对执行此类复杂任务期间的信息交换知之甚少。在这项研究中，传递性推理任务期间的大脑活动的传播进行了调查，并在一个简单的记忆任务期间的传播进行了比较。我们研究了脑电传输模式获得的大脑活动的生理指标，并确定是否有特定的频带与这种类型的认知操作。通过有向传递函数进行了分析。在θ、α和γ波段确定透射模式。结果表明，与记忆试验相比，推理试验中从额叶到顶叶以及额叶区域内的θ和α波段的传输更强。θ和α传输的增加伴随着γ带从右后向左后和前的流动。这些结果与之前有关额顶叶区域参与推理和工作记忆过程的神经成像（fMRI）数据一致，也为额叶theta波在组织认知中的执行作用提供了新的证据。
For about two decades now, the localization of the brain regions involved in reasoning processes is being investigated through fMRI studies, and it is known that for a transitive form of reasoning the frontal and parietal regions are most active. In contrast, less is known about the information exchange during the performance of such complex tasks. In this study, the propagation of brain activity during a transitive reasoning task was investigated and compared to the propagation during a simple memory task. We studied EEG transmission patterns obtained for physiological indicators of brain activity and determined whether there are frequency bands specifically related to this type of cognitive operations. The analysis was performed by means of the directed transfer function. The transmission patterns were determined in the theta, alpha and gamma bands. The results show stronger transmissions in theta and alpha bands from frontal to parietal as well as within frontal regions in reasoning trials comparing to memory trials. The increase in theta and alpha transmissions was accompanied by flows in gamma band from right posterior to left posterior and anterior sites. These results are consistent with previous neuroimaging (fMRI) data concerning fronto-parietal regions involvement in reasoning and working memory processes and also provide new evidence for the executive role of frontal theta waves in organizing the cognition.
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