Optimal Information Transfer in the Cortex through Synchronization
Optimal Information Transfer in the Cortex through Synchronization
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DOI：
10.1371/journal.pcbi.1000934
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发表时间：
2010-09-01
影响因子：
4.3
通讯作者：
Deco, Gustavo
中科院分区：
文献类型：
--
作者：
Buehlmann, Andres;Deco, Gustavo
在近期的实验工作中，已经表明神经元相互作用受到神经元同步的调节，并且这种调节取决于神经元振荡的相位偏移。这一结果表明，网络中的连接可以通过同步来塑造。在此，我们使用一个模型网络来测试和扩展这一假设。我们使用传递熵（一种信息理论度量）来量化交换的信息。我们表明，传递的信息取决于信号的相位关系，交换信息的量随着信号中的振荡而增加，并且信息传递的速度随着同步而增加。这意味着同步使信息传输更高效。总之，我们的结果强化了同步调节神经元相互作用的假设，并提供了进一步的证据表明伽马波段同步具有行为相关性。
In recent experimental work it has been shown that neuronal interactions are modulated by neuronal synchronization and that this modulation depends on phase shifts in neuronal oscillations. This result suggests that connections in a network can be shaped through synchronization. Here, we test and expand this hypothesis using a model network. We use transfer entropy, an information theoretical measure, to quantify the exchanged information. We show that transferred information depends on the phase relation of the signal, that the amount of exchanged information increases as a function of oscillations in the signal and that the speed of the information transfer increases as a function of synchronization. This implies that synchronization makes information transport more efficient. In summary, our results reinforce the hypothesis that synchronization modulates neuronal interactions and provide further evidence that gamma band synchronization has behavioral relevance.