A biophysically detailed model of neocortical local field potentials predicts the critical role of active membrane currents.
A biophysically detailed model of neocortical local field potentials predicts the critical role of active membrane currents.
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DOI:
10.1016/j.neuron.2013.05.023
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发表时间:
2013-07-24
期刊:
影响因子:
16.2
通讯作者:
Koch C
中科院分区:
文献类型:
--
作者:
Reimann MW;Anastassiou CA;Perin R;Hill SL;Markram H;Koch C
Brain activity generates extracellular voltage fluctuations recorded as local field potentials (LFPs). While known that the relevant micro-variables, the ionic currents across membranes, jointly generate the macro-variables, the extracellular voltage, neither the detailed biophysical knowledge nor the required computational power has been available to model these processes. We simulated the LFP in a model of the rodent neocortical column composed of >12,000 reconstructed, multi-compartmental and spiking cortical layer 4 and 5 pyramidal neurons and basket cells, including five million dendritic and somatic compartments with voltage- and ion-dependent currents, realistic connectivity and probabilistic AMPA, NMDA and GABA synapses. We found that, depending on a number of factors, the LFP reflects local and cross-layer processing and active currents dominate the generation of LFPs rather than synaptic ones. Spike-related currents impact the LFP not only at higher frequencies but lower than 50 Hz. This work calls for re-evaluating the genesis of LFPs.
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DOI:
10.1038/nrn3241
发表时间:
2012-05-18
期刊:
Nature reviews. Neuroscience
影响因子:
--
作者:
Buzsáki G;Anastassiou CA;Koch C
通讯作者:
Koch C
DOI:
10.1073/pnas.1202128109
发表时间:
2012-10-16
影响因子:
11.1
作者:
Hill, Sean L.;Wang, Yun;Markram, Henry
通讯作者:
Markram, Henry
影响因子:
2.5
作者:
Goto, Takakuni;Hatanaka, Rieko;Kawashima, Ryuta
通讯作者:
Kawashima, Ryuta
影响因子:
8.6
作者:
Bedard, C.;Kroger, H.;Destexhe, A.
通讯作者:
Destexhe, A.
DOI:
10.1073/pnas.94.23.12699
发表时间:
1997-11-11
影响因子:
11.1
作者:
Fries, P;Roelfsema, PR;Singer, W
通讯作者:
Singer, W