Single-neuron dynamics in human focal epilepsy.

Single-neuron dynamics in human focal epilepsy.
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人类局灶性癫痫中的单神经元动力学。

DOI:
10.1038/nn.2782
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发表时间:
2011-05
影响因子:
25
通讯作者:
Cash, Sydney S.
Cash, Sydney S.
中科院分区:
医学1区
文献类型:
--
作者:
Truccolo, Wilson;Donoghue, Jacob A.;Hochberg, Leigh R.;Eskandar, Emad N.;Madsen, Joseph R.;Anderson, William S.;Brown, Emery N.;Halgren, Eric;Cash, Sydney S.

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癫痫发作的传统特征是由不平衡的失控兴奋引起的单一的、超同步的神经元活动的最终表现。在这里,我们报告了首次检查癫痫患者癫痫发作期间大型单个神经元集合的棘波序列模式。与传统观点相反,癫痫发作的起始和扩散过程中神经元的放电活动是高度异质性的,而不是超同步性的,这表明即使在小的皮质斑块的空间尺度上,不同神经元群之间的相互作用也是复杂的。与早期阶段不同,癫痫终止是一种近乎同质的现象,随后记录的神经元群几乎完全停止尖峰放电。值得注意的是,即使是癫痫发作区域外的神经元,在癫痫发作前几分钟也表现出显著的活动变化。这些发现表明,对目前关于癫痫发作机制的想法进行了修订,并指出了基于新皮质神经元的尖峰活动来预防癫痫发作的可能性。
Epileptic seizures are traditionally characterized as the ultimate expression of monolithic, hypersynchronous neuronal activity arising from unbalanced runaway excitation. Here we report the first examination of spike train patterns in large ensembles of single neurons during seizures in persons with epilepsy. Contrary to the traditional view, neuronal spiking activity during seizure initiation and spread was highly heterogeneous, not hypersynchronous, suggesting complex interactions among different neuronal groups even at the spatial scale of small cortical patches. In contrast to earlier stages, seizure termination is a nearly homogenous phenomenon followed by an almost complete cessation of spiking across recorded neuronal ensembles. Notably, even neurons outside the region of seizure onset showed significant changes in activity minutes before the seizure. These findings suggest a revision of current thinking about seizure mechanisms and point to the possibility of seizure prevention based on spiking activity in neocortical neurons.
DOI: 10.1111/j.0013-9580.2003.12004.x
发表时间: 2003-01-01
期刊: EPILEPSIA
影响因子: 5.6
作者:
Jefferys, JGR
通讯作者: Jefferys, JGR
DOI: 10.1038/nature04970
发表时间: 2006-07-13
期刊: NATURE
影响因子: 64.8
作者:
Hochberg, Leigh R.;Serruya, Mijail D.;Donoghue, John P.
通讯作者: Donoghue, John P.
DOI: 10.1093/brain/awq112
发表时间: 2010-06-01
期刊: BRAIN
影响因子: 14.5
作者:
Keller, Corey J.;Truccolo, Wilson;Cash, Sydney S.
通讯作者: Cash, Sydney S.
DOI: 10.1111/j.0013-9580.2005.66104.x
发表时间: 2005-04-01
期刊: EPILEPSIA
影响因子: 5.6
作者:
Fisher, RS;Boas, WV;Engel, J
通讯作者: Engel, J
DOI: 10.1016/0014-4886(64)90026-3
发表时间: 1964-01-01
影响因子: 5.3
作者:
MATSUMOTO, H;MARSAN, CA
通讯作者: MARSAN, CA