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首页> 外文会议>Computational Neuroscience Meeting >Response selectivity and -frequency fluctuations of the membrane potential in visual cortical neurons
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Response selectivity and -frequency fluctuations of the membrane potential in visual cortical neurons

机译：视觉皮质神经元膜电位的响应选择性和频率波动

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摘要

With in vivo intracellular recordings we show that the rapid, γ-range fluctuations of the membrane potential occur during responses to visual stimuli in both simple and complex cells in cat visual cortex. The strength of these rapid fluctuations correlated with the stimulus optimality. Furthermore, the amplitude of the γ-fluctuations correlated with the phase of stimulus-imposed slow changes of the membrane potential. The combination of these features makes cortical neurons capable to encode the slow changes in the visual world in a kind of amplitude modulation of the high-frequency fluctuations. This assures reliable transformation of the membrane potential changes into spike responses without compromising the temporal resolution of visual information encoding in the low-frequency range.
机译：在体内的细胞内记录中，我们表明膜电位的快速，γ范围波动在猫视觉皮层中的简单和复杂细胞中对视觉刺激的反应期间发生。这些快速波动的强度与刺激最优性相关。此外，γ-波动的幅度与膜电位的刺激型巨大变化的相位相关。这些特征的组合使得皮质神经元能够以高频波动的一种幅度调制编码视觉世界的缓慢变化。这确保了对膜电位变化的可靠变化变为尖峰响应，而不会影响低频范围内的视觉信息的时间分辨率。

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