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首页> 外文期刊>Neuroscience Letters: An International Multidisciplinary Journal Devoted to the Rapid Publication of Basic Research in the Brain Sciences >Brain potentials during mental arithmetic-effects of problem difficulty on event-related brain potentials.
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Brain potentials during mental arithmetic-effects of problem difficulty on event-related brain potentials.

机译：心理算术期间的脑电势-问题难度对与事件相关的脑电势的影响。

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摘要

One addend '+' symbol and another addend were presented in sequence to subjects in a monitor, and event-related brain potentials (ERPs) were recorded at the same time to examine the effect of problem difficulty (with or without carrying in solution) on ERPs. After the presentation of the second addend, N1, P1, N2, late positive complex and slow waves were recorded. The P2 amplitude at F3 site for the difficult arithmetic problems between 168 and 184 ms is larger (more positive) than that for easy problems (P < 0.05). The mean latency of P2 at F7 and P3b at F3 and F4 is significantly longer for difficult problems than that for easy ones (P < 0.05). It is suggested that prefrontal activity may be involved in the arithmetic data retrieval process. ERPs is modified to different degrees by changing the difficulty of mental arithmetic.
机译：在监视器中依次向受试者显示一个加号“ +”和另一个加号，并同时记录事件相关的脑电势（ERP），以检查问题难度（带或不带溶液）的影响。 ERP系统。在介绍了第二个加数N1，P1，N2之后，记录了晚期正复合波和慢波。在168和184 ms之间的困难算术问题在F3位置的P2幅度大于（容易）正数（P <0.05）。与困难问题相比，困难问题的P2在F7的平均潜伏期以及F3b和F4的P3b的平均潜伏期明显长于简单问题（P <0.05）。建议在数学数据检索过程中可能涉及前额叶活动。通过更改心算的难度，可以对ERP进行不同程度的修改。

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