Neural substrates of word generation during stroke recovery: the influence of cortical hypoperfusion

Several studies have demonstrated reorganization of cognitive and motor function caused by stroke. This study examined the influence of hypoperfused brain regions, in addition to the area of the infarct itself, on reorganization of the cognitive processes underlying word generation in stroke patients. In addition, we also sought to determine the influence of hypoperfusion on the blood oxygen level dependent/(BOLD) effect. Subjects with left and right subacute or chronic subcortical strokes, along with normal controls, were imaged while performing a verbal fluency task (word generation). The study population included six normal subject and six stroke patients with subcortical infarcts and cortical hypoperfusion in the middle cerebral artery territory who had recovered or improved markedly in word fluency. While normal subjects displayed a left-lateralized fronto-temporo-parietal and bilateral cingulo-striatal-thalamic-cerebellar network, the activation pattern of stroke patients was determined both by the hypoperfused regions and infarcted areas of the brain. Specifically, patients showed diminished BOLD effect in the cortical regions that were hypoperfused, even though their infarcts were subcortical, and showed increased BOLD effect in the homologous regions of the normal hemisphere. This finding raises the possibility that cortical hypoperfusion in the absence of infarct can cause shift of language functions to the opposite, intact hemisphere. However, reduced BOLD effect in the task relative to rest was found in hypoperfused regions in two patients, raising the possibility that regional function persisted, even though vascular reactivity was impaired. Results illustrate the complexities of functional imaging studies of recovery in patients with vascular lesions.     

团队后援行为及其相关因素

团队后援行为指成员间的作业互助行为,使团队能动态地调整分配资源和能力,从而提高团队绩效。文章首先介绍后援与组织公民行为、关系绩效等概念的异同。然后介绍影响后援行为的三大类因素：个体因素、团队因素、组织因素。再介绍后援行为的两种测量方法：非判断性测量和判断性测量法。最后对今后的研究提出几点启示。     

弱智儿童心理旋转的研究

该研究探讨了一组9~12岁弱智儿童的“心理旋转”能力,该组儿童平均年龄10.1岁,平均智商（IQ）53.8（中度智力残疾）。研究结果与正常儿童（均龄8岁）作了比较。结果显示,弱智儿童的心理旋转能力明显较之正常儿童为差,智力缺陷对视觉图形空间定向能力（心理旋转）有着明显的影响。但无论弱智儿童或是正常儿童的结果均未发现性别差异。     

论唯识学的第八识及其种子

本文着重讨论了佛家唯识学是如何通过建立第八识及其种子学说,以解决众生的生死轮回与觉悟解脱等等问题。     

交通伦理学:研究现状与前景展望

目前关于交通伦理的研究尚处于关注具体问题的各论性初级研究阶段,其研究的基本思路是:以"人本原则"引申出的"安全"、"便捷"、"公正"、"舒适"、"生态"原则为价值向度,对交通主体之间、客体之间、交通主客体之间多方面的伦理关系及其矛盾冲突进行理性的审视、质疑、评判,论证,寻求伦理权衡机制与解困的共识,从而为交通从冲突走向和谐提供伦理导向与支持.     

自我实现的幸福——心理幸福感研究述评

心理幸福感是基于实现论的幸福感研究范式,研究者认为幸福并不只是情感上的体验,而更应该关注个人潜能的实现,从理论出发建构幸福感的结构,指导幸福感测量的发展。已有的研究表明,人口学变量、人格变量和生活事件等内外因素可以较为有效地预测心理幸福感水平。近年来,心理幸福感与主观幸福感之间呈现出整合的趋势。此外,中国人的幸福感研究在借鉴西方成果的同时,仍然需要立足于本土文化,做进一步的理论探讨和实证检验     

和谐二元矩阵模型及其在冲突管理中的应用

和谐是中国文化中的重要因素,本文对和谐的本质从价值性取向和工具性取向进行分析,构建和谐的二元矩阵模型,并将这一模型应用到冲突管理中,提出以和谐为本,建设性解决冲突问题。     

遗传和环境对婚姻的影响

遗传和环境是影响人的两个根本因素,人的心理和行为是在二者及其共同作用的基础上逐渐发展的。婚姻是大多数人一生中最重要的事件之一,同样也受到遗传和环境的制约。文章从择偶、婚姻质量、离婚等婚姻生活的不同方面着手,回顾和评价了进化心理学、社会与文化心理学和行为遗传学对婚姻中遗传和环境影响因素的研究     

尼采思想中的永恒轮回与超人

本文首先阐述何谓永恒轮回,接着阐述了两种永恒轮回,认为永恒轮回与超人之间的紧张关系事实上表现了两种永恒轮回之间的紧张.本文对《查拉图斯特拉如是说》中的永恒轮回与超人之间的关系作了深入的探讨,认为正是这种关系的既紧张又密切使得尼采晚期的哲学呈现出深邃而迷幻的矛盾色彩.