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← Human Body & HealthWhat causes impaired motor skill consolidation after sleep deprivation?
A)Decreased cortisol receptor expression
B)Reduced slow-wave sleep spindle activity✓
C)Elevated systemic inflammatory cytokine levels
D)Increased sympathetic nervous system tone
💡 Explanation
Reduced slow-wave sleep diminishes thalamocortical spindle activity, which is essential for transferring motor skill memories from the hippocampus to the motor cortex. Because slow-wave sleep is disrupted, therefore memory consolidation is impaired, rather than other hormonal or inflammatory processes being the primary driver.
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