Spiking signatures of spontaneous activity bursts in hippocampal cultures.

Spiking signatures of spontaneous activity bursts in hippocampal cultures.
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海马培养物中自发活动的尖峰特征爆发。

DOI:
10.3389/fncom.2011.00046
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发表时间:
2011
影响因子:
3.2
通讯作者:
Kazantsev V
Kazantsev V
中科院分区:
医学4区
文献类型:
--
作者:
Pimashkin A;Kastalskiy I;Simonov A;Koryagina E;Mukhina I;Kazantsev V

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已知密集的解离海马培养物产生自发的爆发性电活动,其可以通过多电极阵列记录。我们分析了在体外2周后记录的爆发中尖峰分布的时空分布。我们发现连续爆发事件中的尖峰模式之间存在统计上显着的相似性,我们将这些尖峰模式称为尖峰特征。这样的尖峰签名可以出现在突发的不同部分中,包括激活模式(突发中的第一尖峰时间)和去激活模式(突发中的最后尖峰时间)。此外,这些模式可以显示明显的时间缩放,例如,它们可以在保持尖峰脉冲顺序的同时,在随后的突发中以不同的速度重放。我们讨论了如何这样的属性的突发可能与可重复的信号通路在体外培养的网络中的形成。
Dense dissociated hippocampal cultures are known to generate spontaneous bursting electrical activity which can be recorded by multielectrode arrays. We have analyzed spatio-temporal profiles of the distribution of spikes in the bursts recorded after 2 weeks in vitro. We have found a statistically significant similarity between the spiking patterns in sequential bursting events, we refer to these spiking patterns as spiking signatures. Such spiking signatures may appear in different parts of the bursts, including the activation patterns – the first spike times in the bursts, and deactivation patterns – the last spike times in the bursts. Moreover, these patterns may display apparent time scaling, e.g., they may be replayed in the subsequent bursts at different speeds, while preserving the spiking order. We discuss how such properties of the bursts may be associated with the formation of repeatable signaling pathways in cultured networks in vitro.
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