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Temporal fusion: a basis for neural plasticity in visual pathways

机译:时间融合:视觉通路中神经可塑性的基础

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Abstract: Vision is an excellent example of the rich interplay between computational and biological approaches to the understanding of complex information processing tasks. Studies of biological solutions to the computational problems of vision, such as contrast masking, movement detection, orientation selectivity has created many controversies in visual neuroscience. Recent neurobiological findings suggest an experimental paradigm that gives emphasis to strategies, which rely on the combined activities of cells or cell assembly for information transforms. This new perspective explains an integrated synaptic facilitation that is contingent upon the emergent spatial and temporal properties of cell activities. The paper briefly presents a novel biologically inspired adaptive architecture that can serve for analysis of cell response dynamics to encode analog visual sensory data under varying conditions. The key will be the active representation of visual objects temporal characteristics, i.e., the exposures time and the syntactic structure to achieve invariance for the fundamental problems of scene segmentation and figure-ground separation. The basic neural mechanism is that of plastic relationship between and within participating cells or cellular groups with known receptive field organizations. Our system behavior is tested with numerous parametric psychophysical data, and the selected simulation samples predict: Only the active integration from multiple exposure to the sequence of sensory visual information can yield a reliable encode to extract salient features of visual objects, in partially unknown and possibly changing environments. !19
机译:摘要:视觉是计算方法和生物学方法之间丰富的相互作用的一个很好的例子,可以用来理解复杂的信息处理任务。对视觉计算问题的生物学解决方案的研究,例如对比蒙版,运动检测,方向选择性,在视觉神经科学领域引起了许多争议。最近的神经生物学发现提出了一种实验范式,该范式强调了策略,该策略依赖于细胞或细胞装配体的组合活动来进行信息转换。这种新的观点解释了整合的突触促进作用,其取决于细胞活性的出现的时空特性。本文简要介绍了一种新颖的,具有生物启发性的自适应体系结构,该体系结构可用于分析细胞反应动力学,以在变化的条件下对模拟视觉感觉数据进行编码。关键将是视觉对象时间特性的有效表示,即曝光时间和句法结构,以实现场景分割和图形背景分离的基本问题的不变性。基本的神经机制是参与细胞或细胞群与已知感受野组织之间和之内的可塑性关系。我们的系统行为已通过大量参数化的心理物理数据进行了测试,并且所选的模拟样本预测:只有从多次暴露到感觉视觉信息序列的主动整合,才能产生可​​靠的编码,以提取视觉对象的显着特征,而这种未知部分可能是未知的,也可能是可能的。不断变化的环境。 !19

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