So while there might be significant increases in energy use at localized regions of the brain when we perform difficult cognitive tasks, when it comes to the whole brain's energy budget overall, these activities don't significantly alter it.

因此，尽管我们执行有难度的认知任务时，大脑局部区域的能量消耗可能会显著提升，但是就整个大脑的能量平衡来说，这些认知任务并不能导致能量总和发生显著改变。