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Ever felt like you’re struggling to think about too many things at once? That might be because your brain’s attention systems are full.
A new brain-scanning method that shows how much energy nerve cells are using has provided more support for the idea that we only have a finite amount of attention available.
The findings also help explain the bizarre “invisible gorilla” optical illusion. In this, people watching a staged video can completely fail to see a man in a gorilla suit taking …