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Frequency Dependence of Signal Power and Spatial Reach of the Local Field Potential
TLDR
A modeling approach based on a well-established biophysical forward-modeling scheme incorporating detailed reconstructed neuronal morphologies in precise calculations of population LFPs including thousands of neurons is pursued.
Decorrelation of Neural-Network Activity by Inhibitory Feedback
TLDR
It is shown that inhibitory feedback efficiently suppresses pairwise correlations and, hence, population-rate fluctuations, thereby assigning inhibitory neurons the new role of active decorrelation.
The variability of tidewater-glacier calving: origin of event-size and interval distributions
Calving activity at the termini of tidewater glaciers produces a wide range of iceberg sizes at irregular intervals. We present calving-event data obtained from continuous observations of the termini
Dynamical Response Properties of Neocortical Neuron Ensembles: Multiplicative versus Additive Noise
TLDR
It is demonstrated that modulations in the variance can be tracked significantly faster than modulations of the mean input current, provided the stimulus amplitudes are sufficiently high.
Dependence of Neuronal Correlations on Filter Characteristics and Marginal Spike Train Statistics
TLDR
It is demonstrated that correlation functions and statistical second-order measures generally exhibit a complex dependence on the filter properties and the statistics of the presynaptic spike trains, and can play a significant role in modulating the interaction strength between neurons or neuron populations.
The Correlation Structure of Local Neuronal Networks Intrinsically Results from Recurrent Dynamics
TLDR
It is demonstrated how the accuracy of mean-field predictions can be improved by self-consistently including correlations, and the cancellation of correlations between the summed inputs to pairs of neurons does not originate from the fast tracking of external input, but from the suppression of fluctuations on the population level by the local network.
How local is the local field potential?
TLDR
Which factors influence the spatial summation of contributions that generate the LFP signal are investigated and the laminar dependence of the reach measure used here is shown and potential implications of the interpretation of experimentally recorded LFPs are discussed.
Echoes in correlated neural systems
TLDR
A quantitative theory of pairwise correlations in finite-sized random networks of spiking neurons is developed and a new criterion for the emergence of collective oscillations from the spectrum of the time-evolution propagator is derived.
Dynamics of self-sustained asynchronous-irregular activity in random networks of spiking neurons with strong synapses
TLDR
It is shown that the strong synaptic weights and the finite time constant of synaptic and neuronal integration can actually serve to stabilize the self-sustained state, and by increasing the synaptic coupling strength, the system can become bistable.
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