2016
DOI: 10.1073/pnas.1515105113
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Network synchronization in hippocampal neurons

Abstract: Oscillatory activity is widespread in dynamic neuronal networks. The main paradigm for the origin of periodicity consists of specialized pacemaking elements that synchronize and drive the rest of the network; however, other models exist. Here, we studied the spontaneous emergence of synchronized periodic bursting in a network of cultured dissociated neurons from rat hippocampus and cortex. Surprisingly, about 60% of all active neurons were self-sustained oscillators when disconnected, each with its own natural… Show more

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Cited by 129 publications
(108 citation statements)
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“…Interestingly, this correlates with reported high amplitude theta oscillations in the hippocampus of neonatal rat pups 57-60 which have been detected even as early as 2-days old 61. Similarly, synchronous bursting rates (1-10 Hz) have been reported in hippocampal cultures by our collaborators and other groups 62-64. Conversely, very little is reported on spontaneous synchronized cell firing within the cerebellum of newborn rat pups.…”
Section: Discussionsupporting
confidence: 88%
“…Interestingly, this correlates with reported high amplitude theta oscillations in the hippocampus of neonatal rat pups 57-60 which have been detected even as early as 2-days old 61. Similarly, synchronous bursting rates (1-10 Hz) have been reported in hippocampal cultures by our collaborators and other groups 62-64. Conversely, very little is reported on spontaneous synchronized cell firing within the cerebellum of newborn rat pups.…”
Section: Discussionsupporting
confidence: 88%
“…Leak current is a functional component of the background conduction necessary to establish resting membrane potential or pacemaker potential (Hodgkin & Huxley, , ). It regulates network oscillation (Koizumi & Smith, ; Pang et al ., ; Zhao et al ., ; Penn et al ., ), cell excitability (Brickley et al ., ; Lutas et al ., ), and pacemaker activities (Hagiwara et al ., ; Liu et al ., ; Jackson et al ., ; Pena & Ramirez, ; Tazerart et al ., ; Ptak et al ., ; Khaliq & Bean, ; Koizumi et al ., ). There are both K + and Na + leak conductances in neurons, with the K + component playing a predominant role.…”
Section: Introductionmentioning
confidence: 99%
“…Bursts were defined as activity with >4 spikes/0.1 sec. Hypersynchronous (or "network") bursts were defined when over 60% of active electrodes fired within one 20-ms bin, as previously described 17 . Spike trains were exported into an HDF5 format and further analyzed using MEAnalyzer 18 .…”
Section: Multielectrode Array Recordingsmentioning
confidence: 99%