Peigneux says faster activation of sleep pressure appears to prevent early birds from fully benefiting from the circadian signal, as evening types do.

Peigneux称睡眠压力的快速活化阻碍早鸟们从生理信号中获益，而夜猫子们则可以。

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Insomnia and short sleep duration, even in young children, resulted in a physiological activation of the sympathetic modulation.

失眠症和短睡眠周期，甚至在幼儿中也能导致交感神经调节的生理激活。

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But, when arithmetic tasks were performed after being denied sleep, there was no equivalent activation of areas of the brain.

BBC: Brain 'battles sleep deprivation'