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题库 / GMATAdvanced-CR-10
Errors in the performance of repetitive or “boring” tasks—often attributed to a momentary lapse in concentration—can be serious in such activities as flying a passenger aircraft. Is there any method that would provide warning of such lapses—for example by monitoring brain activity? Researchers scanned the brains of volunteers performing a repetitive task. When the tasks were being performed correctly, the volunteers’ brains showed activity in cognitive-processing regions. However, these regions became less active several seconds before some errors were made, and another brain region, region X, became active. The researchers concluded that the monitoring of region X could provide warning of an impending error.
Which of the following, if true, most supports the researchers’ conclusion?
The cognitive effort required in performing a repetitive task diminishes significantly with increases in the number of repetitions of the task performance.
Once a mistake was made and detected, brain activity in regions associated with cognitive effort sometimes increased.
Other research found that whenever significant activity occurs in region X, it is generally with repetitive tasks, soon before an error occurs.
The diminution of brain activity in cognitive processing regions and the increase of activity in region X began at least 5 seconds before the errors occurred.
Reduced activity in brain regions associated with cognitive effort was accompanied by increased activity in regions that become active during sleep.
在犯错前几秒，R区域 activity会活跃--可以monitorR区域的活动来提供犯错误的警告
加强
A 认知能力随着重复task的增加而降低。（认知能力和task重复之间的关系与监控R区域来检查错误无关）
B brain activity 增加与逻辑链无关
C R区域变得活跃通常与重复task相关，总是在犯错前发生（排除他因，R区域变得活跃不是因为其他，而generally与重复task相关。）
D R区域变得活跃发生在错误前至少5秒（无关，原文已经说了several seconds，没必要重复，而且at least有可能是几个小时，削弱原文）
E 认知能力下降的原因（无关）
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