Abstract
The interaction between excitation and inhibition in the cerebral cortex network determines the emergent patterns of activity. Here we analyze the specific engagement of excitation and inhibition during a physiological network function such as slow oscillatory activity ( < 1 Hz), during which up and down cortical states alternate. This slow rhythm represents a well-characterized physiological activity with a range of experimental models from in vitro maintained cortical slices to sleeping animals. Excitatory and inhibitory events impinging on individual neurons were identified during up and down network states, which were recognized by the population activity. The accumulation of excitatory and inhibitory events at the beginning of up states was remarkably synchronized in the cortex both in vitro and in vivo. The same synchronization prevailed during the transition from up to down states. The absolute number of detected synaptic events pointed as well towards a delicate balance between excitation and inhibition in the network. The mechanistic and connectivity rules that can support these experimental findings are explored using a biologically inspired computer model of the cortical network.
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Acknowledgments
Financial support from Ministerio de Ciencia e Innovación (MICINN) to MVSV and AC is acknowledged. RR was partially supported by the FP7 EU (Synthetic Forager FP7- ICT-217148) and by MICINN.
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Compte, A., Reig, R., Sanchez-Vives, M.V. (2009). Timing Excitation and Inhibition in the Cortical Network. In: Josic, K., Rubin, J., Matias, M., Romo, R. (eds) Coherent Behavior in Neuronal Networks. Springer Series in Computational Neuroscience, vol 3. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-0389-1_2
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DOI: https://doi.org/10.1007/978-1-4419-0389-1_2
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