From Neuroscience:
However, scientists estimate we spend up to half our waking lives thinking about something other than the task at hand: our minds are wandering. This is striking considering the potential negative consequences, from decreased school or work performance to tragic traffic accidents.
We also know that mind-wandering and lapses of attention are more common when we are sleep-deprived, which suggests they may happen when the neurons in our brain start behaving in a way that resembles sleep. We tested the relationship between sleep and lapses of attention in new research published in Nature Communications. By monitoring people’s brainwaves against their self-reported states of attention, we found that mind-wandering seems to happen when parts of the brain fall asleep while most of it remains awake. (Read more.)
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