Sleeping under a dim light at night (10 lux light) may negatively impact brain cognition, finds Korean researchers based on fMRI analysis of 20 healthy male subjects exposed to zero, 5 and 10 lux light on different nights while sleeping in a sleep lab.

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Sleeping under a dim light at night (10 lux light) may negatively impact brain cognition, finds Korean researchers based on fMRI analysis of 20 healthy male subjects exposed to zero, 5 and 10 lux light on different nights while sleeping in a sleep lab.