Temporal diversity in the lateral geniculate nucleus of cat

Temporal diversity in the lateral geniculate nucleus of cat
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猫外侧膝状核的时间多样性

DOI:
10.1017/s0952523898154068
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发表时间:
1998
影响因子:
1.9
通讯作者:
L. Palmer
L. Palmer
中科院分区:
医学4区
文献类型:
--
作者:
Jonathan Wolfe;L. Palmer

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逆相关与三元白噪声结合使用来估计麻醉、瘫痪猫中 LGN 细胞的一阶时空感受野结构。基于这些数据的奇异值分解,我们得出结论,大多数 LGN 单元近似时空可分离。对第一个奇异值的时间过程的分析揭示了上升时间和波形的强烈双峰但连续的分布。这两种模式代表的细胞通常与 Mastronarde (1987a,b) 的滞后和非滞后类别相关,并且通过它们对场中心的步进和正弦调制点的响应证实了这一点。中间细胞并没有看起来构成一个单独的组,而是在各个方面平滑地填充了明显滞后和非滞后细胞之间的区域。这些结论仅限于 X 细胞,尽管来自小得多的 Y 细胞群体的数据符合相同的方案。我们得出的结论是,滞后和非滞后细胞代表了猫 LGN 中时间响应的连续且非常广泛的分布模式。
Reverse correlation was used in conjunction with ternary white noise to estimate the first-order spatiotemporal receptive-field structure of LGN cells in the anesthetized, paralyzed cat. Based on a singular-value decomposition of these data, we conclude that most LGN cells are approximately space–time separable. An analysis of the timecourses of the first singular values revealed a strongly bimodal but continuous distribution of rise times and waveforms. The two modes represented cells generally associated with the lagged and nonlagged classes of Mastronarde (1987a,b), and this was confirmed by their responses to step and sine-modulated spots in their field centers. The intermediate cells, rather than appearing to constitute a separate group, smoothly filled the region between the obviously lagged and nonlagged cells in every respect. These conclusions are limited to X-cells although the data from a much smaller population of Y-cells conform to the same scheme. We conclude that lagged and nonlagged cells represent the modes of a continuous and very broad distribution of temporal responses in the cat LGN.
DOI: 10.1073/pnas.87.7.2560
发表时间: 1990
影响因子: 11.1
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脑干网状传入对猫外侧膝状核滞后和非滞后细胞的作用。
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发表时间: 1992
影响因子: 2.5
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