Low-frequency stimulation enhances burst activity in cortical cultures during development

Neuroscience
L L BolognaSergio Martinoia

Abstract

The intact brain is continuously targeted by a wealth of stimuli with distinct spatio-temporal patterns which modify, since the very beginning of development, the activity and the connectivity of neuronal networks. In this paper, we used dissociated neuronal cultures coupled to microelectrode arrays (MEAs) to study the response of cortical neuron assemblies to low-frequency stimuli constantly delivered over weeks in vitro. We monitored the spontaneous activity of the cultures before and after the stimulation sessions, as well as their evoked response to the stimulus. During in vitro development, the vast majority of the cultures responded to the stimulation by significantly increasing the bursting activity and a widespread stabilization of electrical activity was observed after the third week of age. A similar trend was present between the spontaneous activity of the networks observed over 30 min after the stimulus and the responses evoked by the stimulus itself, although no significant differences in spontaneous activity were detected between stimulated and non-stimulated cultures belonging to the same preparations. The data indicate that the stimulation had a delayed effect modulating responsiveness capability of the network ...Continue Reading

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Citations

May 6, 2011·Neural Development·Meredith A CliffordMaria J Donoghue
Apr 12, 2012·PloS One·Emanuele MarconiFabio Benfenati
Jul 29, 2016·Cognitive Neurodynamics·Alexey PimashkinVictor Kazantsev
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Nov 7, 2015·PloS One·Franz HamiltonNathalia Peixoto
Feb 16, 2017·Frontiers in Molecular Neuroscience·Ophir Orenstein, Hanna Keren
Mar 20, 2018·F1000Research·Joke TerrynCatherine Verfaillie
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Aug 24, 2017·Scientific Reports·Valentina PasqualeMichela Chiappalone
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May 28, 2019·Frontiers in Neuroscience·Hanna KerenChristian G Mayr
Oct 22, 2020·IScience·Richard GeorgeChristian Mayr

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