When tonic dopamine levels are too high, the brain cannot detect the reward of work in front of you, similar to trying to see stars in the middle of the day when the sky is too bright; sustained focus requires a high contrast between baseline dopamine and reward signals.
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Why Your Brain Can't Focus The 'Stars in Day
Added:Think of it like looking for stars in the middle of the day.
The stars are there, but the sky is too bright for you to notice them.
When your tonic dopamine is too high, your brain literally cannot detect the reward of the work in front of you.
Sustained focus requires a high contrast
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