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Human Body & Health

Why does performance on cognitive tasks requiring memorization suffer more after sleep deprivation compared to tasks requiring simple reaction time?

A)Reduced motor neuron excitability occurs
B)Decreased cortisol levels impact vigilance
C)Hippocampal blood flow is largely unaffected
D)Synaptic consolidation processes are disrupted

💡 Explanation

Sleep deprivation impairs memory consolidation because the glymphatic system clears less metabolic waste from the brain, disrupting synaptic plasticity. Therefore, memory formation suffers more, rather than simple reaction time which relies on different neural pathways and does not require sleep-dependent consolidation.

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