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作者:Rodrigo F. Oliveira , Antonio C. Roque
来源:[J].Neurocomputing(IF 1.634), 2002, Vol.44, pp.957-963Elsevier
摘要:Abstract(#br)A large-scale computational model of the primate primary visual system was constructed using GENESIS. The model consists of ∼10 000 biologically plausible neurons organized into six arrays, which represent sectors of two retinas, two laminae of the dorsal latera...
作者:Rodrigo F. Oliveira , Luciano da Fontoura Costa , Antonio C. Roque
来源:[J].Neurocomputing(IF 1.634), 2004, Vol.65, pp.117-124Elsevier
摘要:Abstract(#br)This paper addresses the issue of curvature coding in the mammalian visual system. Considering the successful account of cortical neurons as detectors of features of visual stimuli like orientation and spatial frequency among others, we discuss the role of curvature ...
作者:Rodrigo F. Oliveira , Antonio Carlos Roque
来源:[J].Neurocomputing(IF 1.634), 2004, Vol.65, pp.691-696Elsevier
摘要:Abstract(#br)We consider the signal compression problem in the peripheral nervous system. We propose a simple mechanism by which the narrow dynamical range observed experimentally in isolated sensory neurons translates into a wide dynamical range as a result of excitable waves an...
作者:Juliana R. Dias , Rodrigo F. Oliveira , Osame Kinouchi
来源:[J].Physica D: Nonlinear Phenomena(IF 1.669), 2007, Vol.237 (1), pp.1-5Elsevier
摘要:Abstract(#br)We study a deterministic dynamics with two time scales in a continuous state attractor network. To the usual (fast) relaxation dynamics towards point attractors (“patterns”) we add a slow coupling dynamics that makes the visited patterns lose stability, leading ...
作者:Rodrigo Publio , Rodrigo F. Oliveira , Antonio C. Roque
来源:[J].Neurocomputing(IF 1.634), 2005, Vol.69 (10), pp.1020-1024Elsevier
摘要:Abstract(#br)We propose a conductance-based model of a rod photoreceptor cell based on experimental data and other modeling works. In this model we use four types of ionic channels identified in the inner segment of the rod: nonselective cation channel (h), delayed rectifying pot...
作者:Rodrigo F. Oliveira , MyungSook Kim , Kim T. Blackwell
来源:[J].PLOS Computational Biology(IF 5.215), 2012, Vol.8 (2)PLOS
摘要:Dopamine release in the striatum has been implicated in various forms of reward dependent learning. Dopamine leads to production of cAMP and activation of protein kinase A (PKA), which are involved in striatal synaptic plasticity and learning. PKA and its protein targets are not ...
作者:Rodrigo F. Oliveira , Anna Terrin ...
来源:[J].PLOS ONE(IF 3.73), 2010, Vol.5 (7)PLOS
摘要:Cyclic AMP (cAMP) and its main effector Protein Kinase A (PKA) are critical for several aspects of neuronal function including synaptic plasticity. Specificity of synaptic plasticity requires that cAMP activates PKA in a highly localized manner despite the speed with which cAMP d...
作者:Rodrigo Publio , Rodrigo F. Oliveira , Antonio C. Roque
来源:[J].PLOS ONE(IF 3.73), 2009, Vol.4 (9)PLOS
摘要:Recent works suggest that one of the roles of gap junctions in sensory systems is to enhance their dynamic range by avoiding early saturation in the first processing stages. In this work, we use a minimal conductance-based model of the ON rod pathways in the vertebrate retina to ...

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