The visual features of continuous pseudocolor encoding is discussed and the optimiz- ing design algorithm of continuous pseudocolor scale is derived.The algorithm is restricting the varying range and direction of ligh...The visual features of continuous pseudocolor encoding is discussed and the optimiz- ing design algorithm of continuous pseudocolor scale is derived.The algorithm is restricting the varying range and direction of lightness,hue and saturation according to correlation and naturalness,automatically calculating the chromaticity coordinates of nodes in uniform color space to get the longest length of scale path,then interpolating points between nodes in equal color differences to obtain continuous pseudocolor scale with visual uniformity.When it was applied to the pseudocolor encoding of thermal image displays,the results showed that the correlation and the naturalness of original images and cognitive characteristics of target pattern were reserved well;the dynamic range of visual perception and the amount of visual information increased obviously;the contrast sensitivity of target identification improved;and the blindness of scale design were avoided.展开更多
Objective： Contralateral C7 spinal nerve transfer is a useful operation for the treatment of brachial plexus root avulsion. The recovery of the independent function at the ipsilateral side, however, depends on neural...Objective： Contralateral C7 spinal nerve transfer is a useful operation for the treatment of brachial plexus root avulsion. The recovery of the independent function at the ipsilateral side, however, depends on neural circuitry reorganization in the central nervous system （CNS）.This study tried to locate the CNS neuronal elements involved in the innervation ofC7 spinal nerve.Method： Pseudorabies virus （PRV, TK/gG-,2 μl）, which expressed green fluorescent protein （GFP）, was injected into the left C7 spinal nerve in 20 adult Sprague Dawley rats.After rats survived for 6 h, 12 h, 24 h and 36 h, the C1-C7segments of the spinal cord and brain were processed using a polyclonal immunohistochemical antibody against PRV.Results： PRV-labeled neurons were found mainly in gray matter of the C1-C7 segments of the spinal cord and at the following structures of the brain： lateral vestibular nucleus, lateral paragigantocellular nucleus, A5 cells, red nucleus, primary and secondary motor cortexes, primary and secondary somatosensory cortexes. Although located bilaterally, the PRV-labeled neurons existed predominantly in the ipsilateral side of the spinal cord and the contralateral side of the brain at 6-12 h after injection （p.i.）. The number of PRV-labeled neurons in the CNS was increasing with rat＇s survival time and the distribution of these neurons turned bilateral with no obvious dominance to either side at 24 h and 36 h （p.i.）.Conclusion： By use of transsynaptic tracing technique with PRV, the anatomically connected set of neurons,which modulates the activity of C7 spinal nerve, is located successfully in the CNS.展开更多
文摘The visual features of continuous pseudocolor encoding is discussed and the optimiz- ing design algorithm of continuous pseudocolor scale is derived.The algorithm is restricting the varying range and direction of lightness,hue and saturation according to correlation and naturalness,automatically calculating the chromaticity coordinates of nodes in uniform color space to get the longest length of scale path,then interpolating points between nodes in equal color differences to obtain continuous pseudocolor scale with visual uniformity.When it was applied to the pseudocolor encoding of thermal image displays,the results showed that the correlation and the naturalness of original images and cognitive characteristics of target pattern were reserved well;the dynamic range of visual perception and the amount of visual information increased obviously;the contrast sensitivity of target identification improved;and the blindness of scale design were avoided.
文摘Objective： Contralateral C7 spinal nerve transfer is a useful operation for the treatment of brachial plexus root avulsion. The recovery of the independent function at the ipsilateral side, however, depends on neural circuitry reorganization in the central nervous system （CNS）.This study tried to locate the CNS neuronal elements involved in the innervation ofC7 spinal nerve.Method： Pseudorabies virus （PRV, TK/gG-,2 μl）, which expressed green fluorescent protein （GFP）, was injected into the left C7 spinal nerve in 20 adult Sprague Dawley rats.After rats survived for 6 h, 12 h, 24 h and 36 h, the C1-C7segments of the spinal cord and brain were processed using a polyclonal immunohistochemical antibody against PRV.Results： PRV-labeled neurons were found mainly in gray matter of the C1-C7 segments of the spinal cord and at the following structures of the brain： lateral vestibular nucleus, lateral paragigantocellular nucleus, A5 cells, red nucleus, primary and secondary motor cortexes, primary and secondary somatosensory cortexes. Although located bilaterally, the PRV-labeled neurons existed predominantly in the ipsilateral side of the spinal cord and the contralateral side of the brain at 6-12 h after injection （p.i.）. The number of PRV-labeled neurons in the CNS was increasing with rat＇s survival time and the distribution of these neurons turned bilateral with no obvious dominance to either side at 24 h and 36 h （p.i.）.Conclusion： By use of transsynaptic tracing technique with PRV, the anatomically connected set of neurons,which modulates the activity of C7 spinal nerve, is located successfully in the CNS.
