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← Human Body & HealthWhich mechanism explains why sleep deprivation impairs the consolidation of newly learned motor skills, like playing a musical instrument?
A)Decreased muscle fiber recruitment during performance
B)Reduced synaptic plasticity in motor cortex✓
C)Elevated cortisol levels increasing muscle tension
D)Diminished proprioceptive feedback from muscles
💡 Explanation
Sleep deprivation reduces synaptic plasticity in the motor cortex, because consolidation of motor skills during sleep requires synaptic strengthening. Therefore, motor skill learning is impaired, rather than being due to altered muscle activation or proprioception during execution.
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