When it comes to vision, the brain can perform more than one function without sacrificing time or accuracy

Many studies suggest that pushing your brain to multitask - writing emails, for instance, while watching the day's latest news and eating breakfast - leads to poorer performance and lower productivity. But for at least one everyday task - visual sampling (the act of picking up bits of visual information through short glances) - multitasking is not a problem for the brain.

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