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首页> 外文期刊>The European Journal of Neuroscience >No evidence for spontaneous cross-frequency phase-phase coupling in the human hippocampus
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No evidence for spontaneous cross-frequency phase-phase coupling in the human hippocampus

机译：没有人类海马中自发横频相位耦合的证据

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摘要

Cross-frequency phase-phase coupling (PPC) has been suggested to play a role in cognitive processing and, in particular, in memory consolidation during sleep. Controversial results have been reported regarding the existence of spontaneous phase-phase coupling in the hippocampus. Here, we investigated this phenomenon in intracranial EEG recordings from the human hippocampus acquired during waking state and different sleep stages. We estimated the strength of interactions between different pairs of frequency bands and evaluated the statistical significance of findings using surrogates that build on different null hypotheses. Indications for spontaneous phase-phase coupling were only observed when testing with less rigorous surrogates. When requiring that all four surrogate tests be passed, however, there were no significant indications for phase-phase coupling. In conclusion, we did not detect evidence for spontaneous cross-frequency phase-phase coupling in the human hippocampus.
机译：已经建议横频相位耦合（PPC）在认知处理中起作用，特别是在睡眠期间的内存整合中起作用。 据报道了对海马在海马中的自发相位相偶联的存在的争议结果。 在这里，我们研究了在唤醒状态和不同睡眠阶段获得的人类海马的颅内脑电图录音中的这种现象。 我们估计不同对频带对之间的相互作用的强度，并评估了使用不同空假设的代理的调查结果的统计显着性。 仅在用较严格的替代品测试时观察到自发相位相偶联的适应症。 然而，当要求通过所有四个替代测试时，相位耦合没有显着的指示。 总之，我们没有检测人类海马中自发横频相位相偶联的证据。

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