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中文摘要：
尽管释放在以前的功能的大脑成像研究经常被发现了，因为它的不好理解的生理的机制，仅仅最近，它成为了系统的学习的一个焦点。然而，大多数研究专注于将介绍释放的大脑区域，并且，到我们的知识，在这些大脑区域之间的释放连接很少在文学在认知任务期间被报导了。在这个工作，使用功能的连接方法 WICA (在内条件内部地区性的协变性分析) ，我们在二项不同认知任务分析了释放—标志取向和数字比较。结果在两项任务在以后的 cingulate， precuneus，前面的 cingulate 和前额的外皮揭示了释放。然而，在撤销区域之间的相互作用显示出许多差别。我们的结果进一步显示特殊释放连接的潜在的含意可能与不同任务或注意资源有关。进一步的研究被需要澄清准确原因。
英文摘要：
Although deactivation has been found frequently in former functional brain imaging researches, only recently has it become a focus of systematic study because of its not well understood physiological mechanism. However, most of the researches concentrated on the brain areas that would present deactivation, and, to our knowledge, the deactivation connectivity between these brain areas during the cognitive tasks has rarely been reported in literature. In this work, using the functional connectivity method WlCA （within-condition interregional covariance analysis）, we analyzed the deactivations in two different cognitive tasks symbol orientation and number comparison. The results revealed deactivations in the posterior cingulate, precuneus, anterior cingulate and prefrontal cortex in both tasks. However, the interaction between the deactivated regions shows many differences. Our result further indicates that the potential implication of special deactivation connectivity may be related to the different task or attention resource. Further research is needed to clarify the exact reason.
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