It's what the scientists call an increased cognitive load.

这就是科学家所说的认知负荷增加。

Others speculate that people straining to understand what is said to them or to navigate a world made hazy by poor eyesight suffer a debilitating increased " cognitive load" .

另一些人推测，人们在竭力理解别人对他们说的话或者在因视力不佳而变得模糊的世界中航行时，会遭受严重的“认知负荷”。