It is not clear whether the method used in functional brain-network related research can be applied to explore the feature binding mechanism of visual perception. In this study, we inves-tigated feature binding of col...It is not clear whether the method used in functional brain-network related research can be applied to explore the feature binding mechanism of visual perception. In this study, we inves-tigated feature binding of color and shape in visual perception. Functional magnetic resonance imaging data were collected from 38 healthy volunteers at rest and while performing a visual perception task to construct brain networks active during resting and task states. Results showed that brain regions involved in visual information processing were obviously activated during the task. The components were partitioned using a greedy algorithm, indicating the visual network existed during the resting state.Z-values in the vision-related brain regions were calculated, conifrming the dynamic balance of the brain network. Connectivity between brain regions was determined, and the result showed that occipital and lingual gyri were stable brain regions in the visual system network, the parietal lobe played a very important role in the binding process of color features and shape features, and the fusiform and inferior temporal gyri were crucial for processing color and shape information. Experimental ifndings indicate that understanding visual feature binding and cognitive processes will help establish computational models of vision, improve image recognition technology, and provide a new theoretical mechanism for feature binding in visual perception.展开更多
针对减速机箱体零件的参数化设计问题,研究了在Microsoft Visual Studio 2005环境下Pro/E 4.0的二次开发方法,探讨了箱体特征的划分方法、以Pro/TOOLKIT为工具对箱体进行参数化设计开发的步骤以及开发过程中应注意的一些问题,并以K系列...针对减速机箱体零件的参数化设计问题,研究了在Microsoft Visual Studio 2005环境下Pro/E 4.0的二次开发方法,探讨了箱体特征的划分方法、以Pro/TOOLKIT为工具对箱体进行参数化设计开发的步骤以及开发过程中应注意的一些问题,并以K系列减速机箱体的参数化设计为例,验证了所探讨的各方法的可行性.展开更多
基金financially supported by grants from the National Natural Science Foundation of China,No.61170136,61373101,61472270,and 61402318Natural Science Foundation(Youth Science and Technology Research Foundation)of Shanxi Province,No.2014021022-5Shanxi Provincial Key Science and Technology Projects(Agriculture),No.20130311037-4
文摘It is not clear whether the method used in functional brain-network related research can be applied to explore the feature binding mechanism of visual perception. In this study, we inves-tigated feature binding of color and shape in visual perception. Functional magnetic resonance imaging data were collected from 38 healthy volunteers at rest and while performing a visual perception task to construct brain networks active during resting and task states. Results showed that brain regions involved in visual information processing were obviously activated during the task. The components were partitioned using a greedy algorithm, indicating the visual network existed during the resting state.Z-values in the vision-related brain regions were calculated, conifrming the dynamic balance of the brain network. Connectivity between brain regions was determined, and the result showed that occipital and lingual gyri were stable brain regions in the visual system network, the parietal lobe played a very important role in the binding process of color features and shape features, and the fusiform and inferior temporal gyri were crucial for processing color and shape information. Experimental ifndings indicate that understanding visual feature binding and cognitive processes will help establish computational models of vision, improve image recognition technology, and provide a new theoretical mechanism for feature binding in visual perception.
文摘针对减速机箱体零件的参数化设计问题,研究了在Microsoft Visual Studio 2005环境下Pro/E 4.0的二次开发方法,探讨了箱体特征的划分方法、以Pro/TOOLKIT为工具对箱体进行参数化设计开发的步骤以及开发过程中应注意的一些问题,并以K系列减速机箱体的参数化设计为例,验证了所探讨的各方法的可行性.
