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Estimating the contribution of assembly activity to cortical dynamics from spike and population measures
2009
BMC Neuroscience
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A comparison finds the fractional contribution of assemblies to the neuronal dynamics estimated by the two independent methods in good agreement. ...
Finally, an extension of the former approach enables us to infer an estimate of the percentage of spikes a neuron contributes to assemblies. The consist- ...
Acknowledgements Partially funded by the Helmholtz Alliance on Systems Biology, the French National Research Agency (ANR-05-NEUR-045-01), and EU grant 15879 (FACETS). ...
doi:10.1186/1471-2202-10-s1-p231
fatcat:ct3gik6m7zfqtmngpjxhrfvmt4
Estimating the contribution of assembly activity to cortical dynamics from spike and population measures
2010
Journal of Computational Neuroscience
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Combining spike and LFP signals, we obtain an estimate of the fraction of spikes resulting from assemblies in the experimental data. ...
The hypothesis that cortical networks employ the coordinated activity of groups of neurons, termed assemblies, to process information is debated. ...
Part of the work was carried out while SG and MDi enjoyed a scientific stay at the Norwegian University of Life Sciences, Ås in January, 2009. ...
doi:10.1007/s10827-010-0241-8
pmid:20480218
pmcid:PMC2978895
fatcat:v3mpks5kgjg2ji24wx6u7xmsoq
Cell Assembly Dynamics in Detailed and Abstract Attractor Models of Cortical Associative Memory
2003
Theory in biosciences
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We conclude that there is today considerable substance in Hebb's theory of cell assemblies and its attractor network formulations, and that they have contributed to increasing our understanding of cortical ...
The focus is on memory properties and dynamics of networks modularized in terms of cortical minicolumns and hypercolumns. ...
and the Swedish Science Research Council (VR) is gratefully acknowledged. ...
doi:10.1078/1431-7613-00072
fatcat:57gcsjmuo5ce5j7ak233tjizhy
Cell assembly dynamics in detailed and abstract attractor models of cortical associative memory
2003
Theory in biosciences
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We conclude that there is today considerable substance in Hebb's theory of cell assemblies and its attractor network formulations, and that they have contributed to increasing our understanding of cortical ...
The focus is on memory properties and dynamics of networks modularized in terms of cortical minicolumns and hypercolumns. ...
and the Swedish Science Research Council (VR) is gratefully acknowledged. ...
doi:10.1007/s12064-003-0035-x
fatcat:zkiy5wh3brhhzpz4axqjjcctwa
Oscillatory phase coupling coordinates anatomically dispersed functional cell assemblies
2010
Proceedings of the National Academy of Sciences of the United States of America
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LFP-LFP phase coupling is estimated from the distribution of phase differences between two LFP signals (Fig. S2E) and is a measure of the direct dependence between two signals. ...
Here we show that spiking activity in single neurons and neuronal ensembles depends on dynamic patterns of oscillatory phase coupling between multiple brain areas, in addition to the effects of proximal ...
LFP-LFP phase coupling is estimated from the distribution of phase differences between two LFP signals ( Fig. S2E) and is a measure of the direct dependence between two signals. ...
doi:10.1073/pnas.1008306107
pmid:20855620
pmcid:PMC2951408
fatcat:5g3hymdfurb27l7eeojgfreada
Balanced neural architecture and the idling brain
2014
Frontiers in Computational Neuroscience
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In total, the comparison of the trial-variable dynamics of single neurons or neuron pairs during spontaneous and evoked activity can be a window into the global structure of balanced cortical networks. ...
(A) Schematic of excitatory (red) and inhibitory (blue) network. (B) Membrane potential dynamics (black) from a representative neuron in the network. ...
ACKNOWLEDGMENT The authors thank the members of the Doiron lab for useful conversations. ...
doi:10.3389/fncom.2014.00056
pmid:24904394
pmcid:PMC4034496
fatcat:xq7mwnpofrdbxezmrlym6kxihu
Spike Synchronization and Rate Modulation Differentially Involved in Motor Cortical Function
1997
Science
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Requin J, Riehle A, Seal J (1988) Neuronal activity and information processing in motor control: from stages to continuous flow. Biol Psychol 26: 179-198 4. ...
Zhang J, Riehle A, Kornblum S, Requin J (1997) Dynamics of single neuron activity in monkey primary motor cortex related to sensorimotor transformation. ...
Denker M, Riehle A, Diesmann M, Grün S (2010) Estimating the contribution of assembly activity to cortical dynamics from spike and population measures. J Comput Neurosci 29: 599-613 42. ...
doi:10.1126/science.278.5345.1950
pmid:9395398
fatcat:gjvbqeljvbfgrdatwukh6sw3yu
Coordination in Circuits
[chapter]
2010
Dynamic Coordination in the Brain
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from synapses to neurons, to networks and behavior, and is illustrated using experimental observations primarily from cortical and hippocampal activity patterns during behavior. ...
Introduction What are the mechanisms underlying the emergence of mind from the activity of groups of neurons? ...
Estimates show that in a period of about 20 ms, a suf¿cient period for the postsynaptic neuron to integrate the inputs and ¿re a spike, only about 500 neurons may need to be coactive out of a population ...
doi:10.7551/mitpress/9780262014717.003.0009
fatcat:7g4lnmbfwfhqxejp3cfqj7eo7a
Meta-Potentiation: Neuro-Astroglial Interactions Supporting Perceptual Consciousness
2007
Nature Precedings
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Conscious perceptual processing involves the sequential activation of cortical networks at several brain locations, and the onset of oscillatory synchrony affecting the same neuronal population. ...
Once calcium channels are open, slow inward currents activate the CaM/CaMKII complex to phosphorylate AMPA receptors in a population of neurons connected with the astrocyte, thus amplifying the local excitatory ...
Progress in the estimative of the temporal dynamics of conscious perceptual processing came from the measurement of brain events directly correlated to the processing (not to the behavioral response). ...
doi:10.1038/npre.2007.760.1
fatcat:mwyu6usm5bg2jn7tzcuiohlqo4
A Physiologically Plausible Spatio-Temporal Model for EEG Signals Recorded With Intracerebral Electrodes in Human Partial Epilepsy
2007
IEEE Transactions on Biomedical Engineering
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In particular, the cortical area involved in the generation of epileptic spikes was estimated to vary from 18 to 25 cm², for brain conductivity values ranging from 30 to 35x10 -5 S/mm, for high coupling ...
of neuronal sources and ii) a model of coupled neuronal populations which describes their temporal dynamics. ...
In particular, the cortical area involved in the generation of epileptic spikes was estimated to vary from 18 to 25 cm², for brain conductivity values ranging from 30 to 35x10 -5 S/mm, for high coupling ...
doi:10.1109/tbme.2006.890489
pmid:17355049
pmcid:PMC1978245
fatcat:4w2ndluzrndznhiubd7uppf52i
Modeling extracellular potentials
2010
Journal of Computational Neuroscience
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The lowfrequency part, the local-field potential (LFP), appears largely to reflect subthreshold activity from a larger group of surrounding neurons. ...
The main theme of the workshop was the development and use of new mathematical modeling and data analysis techniques to extract more information and insights from various types of multielectrode extracellular ...
In "Estimating the contribution of assembly activity to cortical dynamics from spike and population measures" Denker, Riehle, Diesmann and Grün describe methods to estimate spiking synchrony in neural ...
doi:10.1007/s10827-010-0283-y
pmid:20936339
pmcid:PMC2978891
fatcat:wfcyfvz4jbfipgxsjwvttws5iu
Emergent cortical circuit dynamics contain dense, interwoven ensembles of spike sequences
2017
Journal of Neurophysiology
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Emergent cortical circuit dynamics contain dense, interwoven ensembles of spike sequences. ...
We show that the population spike histogram is sufficient to produce a spatiotemporal progression of activity across the population. ...
We also thank Brendan Chambers, Nicolas Brunel, and Stephanie Palmer for their helpful discussions and members of the MacLean laboratory for comments on the manuscript. ...
doi:10.1152/jn.00394.2017
pmid:28724786
fatcat:mko2dfg6x5bhhhvhzyrlltrdz4
Dynamics and Effective Topology Underlying Synchronization in Networks of Cortical Neurons
2006
Journal of Neuroscience
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We show that the basic mode of assembly activation, "network spike," is a threshold-governed, synchronized population event of 0.1-0.2 s duration and follows the logistics of neuronal recruitment in an ...
In vivo measurements show that the size of individual assemblies depends on their function and varies considerably, but the timescale of assembly activation is in the range of 0.1-0.2 s and is primarily ...
In the present study, we use networks of cortical neurons developing in vitro on arrays of microelectrodes to describe the biophysical process underlying assembly activation in terms of population dynamics ...
doi:10.1523/jneurosci.1627-06.2006
pmid:16914671
fatcat:vfqkp4cjhvei5dg4nhxg63ggcq
Signal Processing for Neural Spike Trains
2010
Computational Intelligence and Neuroscience
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spectrum of spike trains to quantify the dynamical stability of neuronal responses to a sensory stimulus. ...
The first paper "Quantitative estimation of the non-stationary behavior of neural spontaneous activity" by Destro-Filho et al. describes a quantitative approach to estimate the nonstationary behavior of ...
doi:10.1155/2010/698751
pmid:20454532
pmcid:PMC2864889
fatcat:5mnyu7yngvfarnipb6halleoi4
Propagating Activation during Oscillations and Evoked Responses in Neocortical Slices
1999
Journal of Neuroscience
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Dynamic ensembles were distinguishable from the epileptiform spikes that occurred in low [Mg] ACSF. ...
Dynamic ensembles propagated at ϳ30 mm/sec; the activity could propagate in both directions in cortical slices. The propagation consisted in part of "jumps," the locations of which were not fixed. ...
The nature of activation in a dynamic ensemble We estimate that a dynamic ensemble has only ϳ5-7% of the maximum activation of the cortical network. ...
doi:10.1523/jneurosci.19-12-05005.1999
pmid:10366633
fatcat:xf5saiyfxzggndtge6sc4kqxsu
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