![]() ![]() ![]() Among other things, repeated task switching leads to anxiety, which raises levels of the stress hormone cortisol in the brain, which in turn can lead to aggressive and impulsive behaviors. This leads to compromises in both cognitive and physical performance. We’ve literally depleted the nutrients in our brain. And the kind of rapid, continual shifting we do with multitasking causes the brain to burn through fuel so quickly that we feel exhausted and disoriented after even a short time. Asking the brain to shift attention from one activity to another causes the prefrontal cortex and striatum to burn up oxygenated glucose, the same fuel they need to stay on task. “Then there are the metabolic costs of switching itself that I wrote about earlier. ![]()
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