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131.
视觉信息加工的单侧视野优势效应一直是认知心理学领域的研究热点。本研究采用变化检测范式探讨文字和几何信息在上下视野中的优势效应。结果发现:当加工文字材料时,颜色和位置检测任务均出现上部视野优势效应;加工几何图形时,则出现下部视野优势效应。上述结果表明,任务信息所需要的加工类型影响上下视野的优势效应,支持Previc提出的视野优势效应的生态假说。 相似文献
132.
Wang YJ Lu J Wu DM Zheng ZH Zheng YL Wang XH Ruan J Sun X Shan Q Zhang ZF 《Neurobiology of learning and memory》2011,96(2):156-165
Evidence indicates that systemic administration of lipopolysaccharide (LPS) induces brain inflammation, ultimately resulting in cognitive deficits. Ursolic acid (UA), a plant-derived pentacyclic triterpenoid, is well known to possess multiple biological functions, including antioxidant, anti-tumor and anti-inflammatory activities. In the present study, we assessed the protective effect of UA against the LPS-induced cognitive deficits in mice. We found that UA significantly improved cognitive deficits of LPS-treated mice in open field, step-through passive avoidance and Morris water maze tasks. One potential mechanism of this action was attributed to the decreased production of pro-inflammatory markers including COX-2, iNOS, TNF-α, IL-1β, IL-2 and IL-6 in LPS-treated mouse brain. Mechanistically, UA markedly inhibited LPS-induced IκBα phosphorylation and degradation, NF-κB p65 nuclear translocation and p38 activation in mouse brain, but did not affect the activation of TLR4, MyD88, ERK, JNK and Akt. Taken together, these results suggest that UA may be useful for mitigating inflammation-associated brain disorders by inhibiting pro-inflammatory factors production, at least in part, through blocking the p38/NF-κB signaling pathways. 相似文献
133.
Jiang Jiang Yu Kou Fang Wang Ying Wu Yan‐Mei Li Yuan Li Yiyin Yang Hui Cao Qiuping Wu Shi‐Jie Jing Bi‐Jing Jiang La‐Mei Shen Ai‐Juan Li Zhongquan Li Wenjun Gao Chi‐Yue Chiu Ying‐Yi Hong Shih‐Chi Hsu Lin Zhang Bao‐Yan Yang Xiao‐Li Yang De‐Lei Zhao Zhimin Zou Qing‐Wang Wei Xia Chen Yu‐Fang Zhao Yi‐Jin Zhou Hong Chen Jianping Feng Xin Wang 《Asian Journal of Social Psychology》2011,14(3):207-216
A scandal can evoke public outrage when it is widely publicized and involves an individual who is perceived to have a high level of cultural representativeness. Two experiments showed that when the scandalous target's moral character was highlighted, emotional responses towards the target were least negative when the scandal was widely circulated and when the target was seen as a representative of his culture. These results suggest that when a cultural symbol is implicated in a widely‐circulated scandal, the negative emotions directed towards the scandalous individual can be alleviated when the public remains confident in his or her commitment to morality. 相似文献
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135.
青少年患者是否享有自主权,这在当代无论是理论还是实践上都是一个广为争议的话题.文章从伦理的视角时青少年患者自主权存在的伦理合理性进行了论证,作者认为,青少年患者自主权的存在不仅具有契约论、目的论和道义论的基础,而且也是尊重青少年身心发展规律的要求.当然,任何权利都有其限度,青少年患者自主权不得超越病人福利原则、不伤害原则和公正原则的限制. 相似文献
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137.
本文对<易传>之成书及学派归属问题得出自己的结论后,从人类社会演进图式与"三材之道"、<易传>与理想人格塑造、<易传>与主体价值的实现三个层面对<易传>儒道结合的政治思想特征做了深入剖析,指出<易传>思想是以儒家思想为基本价值观,在吸收和借鉴道家思想及阴阳家思想的基础上,把它们与儒家思想结合起来,为儒家思想注入了新的思想内容,在更高层次上建构了儒家的天道观和人道观,从而达到为儒家思想寻求形而上价值依据的目的. 相似文献
138.
Beretta A Campbell C Carr TH Huang J Schmitt LM Christianson K Cao Y 《Brain and language》2003,85(1):67-92
The hypothesis that morphological processing is supported by a mental dictionary of stored entries plus a set of mental computations based on rules is examined using event-related fMRI. If a rules-plus-memory model () reflects the actual organization of the language faculty, two distinct patterns of brain activation should be observed for production of German irregular and regular noun and verb inflections. If a connectionist alternative to the rules-and-memory model (, and many others since), which seeks to explain the production of both irregular and regular forms within a single associative memory mechanism, is correct, there should be no neural differentiation between German regular and irregular inflection. The results we report support the existence of substantially differing patterns of activation for regulars vs. irregulars, an outcome that is consistent with the two-component rules-plus-memory account. 相似文献
139.
学习困难学生认知加工机制的研究 总被引:31,自引:1,他引:30
采用两因素混合实验设计,在严格控制条件下,比较了学困生和学优生在工作记忆容量上的差异,并在此基础上引入提示程序进一步探讨,学困生WM容量低主要是由存贮能力造成的还是由加工效率造成的或是两者时起作用的问题。 相似文献
140.