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← Human Body & HealthIf a person with consistent sleep deprivation experiences transient cognitive improvement following a short nap, which mechanism explains this phenomenon better than others?
A)Reduced cortisol inhibits neural activity
B)Glycogen stores provide brain energy
C)Synaptic pruning enhances neural efficiency
D)Adenosine clearance restores synaptic transmission✓
💡 Explanation
Transient cognitive improvement after a nap in sleep-deprived individuals arises from adenosine clearance; adenosine accumulates during wakefulness, inhibiting synaptic transmission. Because adenosine clearance reduces this inhibition, synaptic function is temporarily restored, therefore cognitive function improves, rather than other offered energy or hormone-related mechanisms.
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