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首页> 外文期刊>Journal of Neurophysiology >Wavelets of excitability in sensory neurons.
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Wavelets of excitability in sensory neurons.

机译：感觉神经元的兴奋性小波。

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摘要

We have investigated variations in the excitability of mammalian cutaneous mechanoreceptor neurons. We focused on the phase dynamics of an action potential relative to a periodic stimulus, showing that the excitability of these sensory neurons has interesting nonstationary oscillations. Using a wavelet analysis, these oscillations were characterized through the depiction of their period as a function of time. It was determined that the induced oscillations are weakly dependent on the stimulus frequency, and that lower temperatures significantly reduce the frequency of the phase response. Our results reveal novel excitability properties in sensory neurons, and, more generally, could prove significant in the deduction of mechanistic attributes underlying the nonstationary excitability in neuronal systems. Since peripheral neurons feed information to the CNS, variable responses observed in higher regions may be generated in part at the site of sensory detection.
机译：我们已经研究了哺乳动物皮肤机械感受器神经元的兴奋性变化。我们专注于相对于周期性刺激的动作电位的相动力学，表明这些感觉神经元的兴奋性具有有趣的非平稳振荡。使用小波分析，通过将振荡周期描述为时间来表征这些振荡。可以确定，诱发的振荡几乎不依赖于刺激频率，并且较低的温度会显着降低相位响应的频率。我们的研究结果揭示了感觉神经元中的新型兴奋性属性，并且更普遍地，在证明神经元系统非平稳兴奋性所依据的机制属性的推论中可能具有重要意义。由于周围神经元向中枢神经系统提供信息，因此在较高区域中观察到的可变反应可能会部分在感觉检测部位产生。

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