نتایج جستجو برای: complex train

تعداد نتایج: 822860  

Journal: :Physical review letters 2011
Yu V Ushakov A A Dubkov B Spagnolo

Spike train regularity of the noisy neural auditory system model under the influence of two sinusoidal signals with different frequencies is investigated. For the increasing ratio m/n of the input signal frequencies (m, n are natural numbers) the linear growth of the regularity is found at the fixed difference (m - n). It is shown that the spike train regularity in the model is high for harmoni...

2011
Robert Rosenbaum James Trousdale Krešimir Josić

Neurons integrate inputs from thousands of afferents. Similarly, some experimental techniques record the pooled activity of large populations of cells. When cells in these populations are correlated, the correlation coefficient between the collective activity of two subpopulations is typically much larger than the correlation coefficient between individual cells: The act of pooling individual c...

Journal: :The Journal of General Physiology 1977
J F Fohlmeister R E Poppele R L Purple

Recognition of nonlinearities in the neuronal encoding of repetitive spike trains has generated a number of models to explain this behavior. Here we develop the mathematics and a set of tests for two such models: the leaky integrator and the variable-gamma model. Both of these are nearly sufficient to explain the dynamic behavior of a number of repetitively firing, sensory neurons. Model parame...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2010
Andrea K Barreiro Eric Shea-Brown Evan L Thilo

We examine the effect of the phase-resetting curve on the transfer of correlated input signals into correlated output spikes in a class of neural models receiving noisy superthreshold stimulation. We use linear-response theory to approximate the spike correlation coefficient in terms of moments of the associated exit time problem and contrast the results for type I vs type II models and across ...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2008
Aaditya V Rangan Gregor Kovacic David Cai

We present a kinetic theory for all-to-all coupled networks of identical, linear, integrate-and-fire, excitatory point neurons in which a fast and a slow excitatory conductance are driven by the same spike train in the presence of synaptic failure. The maximal-entropy principle guides us in deriving a set of three (1+1) -dimensional kinetic moment equations from a Boltzmann-like equation descri...

Journal: :Journal of neuroscience methods 2012
Tyrus Berry Franz Hamilton Nathalia Peixoto Timothy Sauer

We develop a method from semiparametric statistics (Cox, 1972) for the purpose of tracking links and connection strengths over time in a neuronal network from spike train data. We consider application of the method as implemented in Masud and Borisyuk (2011), and evaluate its use on data generated independently of the Cox model hypothesis, in particular from a spiking model of Izhikevich in fou...

Journal: :Neural computation 1999
Carlos D. Brody

Covariations in neuronal latency or excitability can lead to peaks in spike train covariograms that may be very similar to those caused by spike timing synchronization (see companion article). Two quantitative methods are described here. The first is a method to estimate the excitability component of a covariogram, based on trial-by-trial estimates of excitability. Once estimated, this componen...

2014
Robert E. Kass

Journal: :Progress in brain research 2007
Liam Paninski Jonathan Pillow Jeremy Lewi

There are two basic problems in the statistical analysis of neural data. The "encoding" problem concerns how information is encoded in neural spike trains: can we predict the spike trains of a neuron (or population of neurons), given an arbitrary stimulus or observed motor response? Conversely, the "decoding" problem concerns how much information is in a spike train, in particular, how well can...

2006
Johan Wikström Arvid Kauppi Arne W Andersson Bengt Sandblad

In 1996, on initiative of the Swedish National Rail Administration, a research study was initiated by the department of Human Computer Interaction at Uppsala University with the aim to learn more about the problems and difficulties involved in train traffic control. As a result of this study, and the developing situation with higher speeds, more frequent traffic, and many competing train traffi...

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