目的：研究噪声对阈下膜电位振荡和神经元放电的影响。

AIM: To study the effects of noise on the subthreshold membrane potential oscillation (SMPO) and firing of neurons.

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振荡电位4的潜伏期在糖尿病视网膜病变0期组和增殖期组间的差异有显著性（P<0.05，P<0.01）。

There were marked differences in OP 4 during latency among 0-period DR group and groups in the proliferative period P< 0.05, P< 0.01.

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噪声可以降低阈下膜电位振荡发生的膜电位水平，有利于神经元产生阈下膜电位振荡和放电，从而提高神经元的敏感性。

Noise reduces the level of membrane potential of generating oscillation and firing. Noise helps neuron to generate oscillation and firing, thus improving the sensitivity of neurons.

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