问题在于，在结构的主要共振频率上锤击力谱常常具有显著的降落。
The problem is that often the impact spectrum will have significant drop out at the major resonances of the structure.
研究人员写道，“我们的功能性核磁共振成像研究的结果表明，清醒时的重新激活，主要是侧‘前额叶皮质’被激活。
The results of our fMRI study indicate that during reactivation in the wake state, mainly the lateral [pre-frontal cortex] is activated.
这个工作透过主要的共振：想像敲击调整音叉。
This works through the principle of resonance: imagine striking a tuning fork.
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