Marcelo HR Tragtenberg

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The cortical processing of visual information begins at the primary visual area of the cerebral cortex (V1). It maps completely the visual field, receiving input from the Lateral Gineculate Nucleus (LGN) and transmitting the output to the secondary visual area (V2). Recently, Andreazza and Pinto have proposed a biologically motivated network of neurons in(More)
Neural synchronization is a phenomenon related to information transmission between brain areas, cognitive functions, perceptual and motor skills and memory [1,2], and also connected to mental illnesses like epilepsy , isolated seizures, Alzheimer´s disease, Parkinson´s disease, autism and schizophrenia [3]. This work is related to the critical state of the(More)
The KTz neuron model [1-5] is a map with three dynamic variables: the neuron membrane potential (xt), a recovery variable (y t) and a slow adaptive current (zt), given by the following equations: x t+1 = tanh x t − Ky t + z t + I t T , y t+1 = x t , z t+1 = (1 − δ) z t − λ (x t − x R) , where δ is related to the refractory period, x R is the reversal(More)
To study neurons with computational tools, one may call upon, at least, two different approaches: (i) Hodg-kin-Huxley like neurons [1] (i.e. biological neurons) and (ii) formal neurons (e.g. Hindmarsh-Rose (HR) model [2], Kinouchi-Tragtenberg (KT) model [3], etc). Formal neurons may be represented by ordinary differential equations (e.g. HR), or by maps,(More)
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