条件性味觉厌恶分化后臂旁核c-fos表达的变

以口内注入糖精或蔗糖溶液为条件刺激,腹腔内注射LiCl为非条件刺激,在大鼠形成条件性味觉厌恶后进行分化训练,观察味质和嗜好性对臂旁核各亚核c-fos表达的影响及其交互作用。结果表明：味质和嗜好性对背侧外侧亚核(dls)和腹侧外侧亚核(vls)的c-fos表达无影响;在内侧外侧亚核(ils)和外部内侧亚核(ems),蔗糖诱导的c-fos表达高于糖精,但在外部外侧亚核(els),糖精诱导的表达高于蔗糖;嗜好性刺激引起ils、中央外侧亚核(cls)和cms内c-fos高表达,厌恶性刺激引起ems和els内的高表达。在ils和cms嗜好性与味质的影响各自独立,在els和ems内嗜好性与味质的影响存在交互作用。提示PBN内存在味质辨别和报酬评价的代表区,两种代表区有交迭,ems和els对味质信息和报酬信息的整合有重要作用     

泛论齐国五大音乐活动中心

寓于齐文化之中的齐国音乐艺术,在“因其俗,简其礼”这一治国方略的指导下,呈现出了勃勃生机。普及的群众性音乐活动,在齐都及其周边地区孕育出了五大音乐活动中心,即:宫城王府——官乐中心、郭城韶院——雅乐中心、雍门内外——民间音乐交流中心、齐右高唐——群众歌咏中心、齐左莱地——莱夷乐舞中心。     

跨期选择和风险决策的认知神经机制

经济决策包含两个传统问题：跨期选择和风险决策。跨期选择分为冲动决策和自我控制,当冲动决策时,优先激活了与中脑多巴胺神经元相联系的旁边缘区域,包括伏隔核、眶额皮层中部和前额叶中部;自我控制即选择延迟决策时大脑双侧前额叶和后顶叶皮层神经活动增强。在风险和不确定性条件下,大脑皮层和杏仁核与风险决策联系密切。     

多元动机网格测验（MMG-S）中文版的修订报告

对Sokolowski等人编制的简版多元动机网格测验（MMG-S）作了中文版的修订。MMG-S的验证性因素分析表明：中文修订版MMG-S仍保持英文版的六因子结构,修订后六因子的α系数在0.70~0.84之间。中文修订版MMG-S具有良好的心理学测量指标,可用于测量企业管理人员的三种社会性动机。     

Age differences in the prevalence of physical aggression among 5-11-year-old Canadian boys and girls

It has been proven extremely difficult in the past to estimate the prevalence of physical aggression in children for two main reasons: (a) a heterogeneous sampling of behaviors (i.e., mix between physically aggressive and non-physically aggressive antisocial behaviors), and (b) a lack of a "gold standard" to identify children who exhibit physically aggressive behaviors on a frequent basis. The goal of this study was to test for age differences in the prevalence of physical aggression in the Canadian population of school-aged boys and girls, using cross-sectional data from the National Longitudinal Survey of Children and Youth (NLSCY). The first wave of the NLSCY included a representative sample of 12,292 Canadian children aged 5-11 years. We used latent class analysis to identify children whose propensity to exhibit physically aggressive behaviors was much higher than that of other children of the same age and sex in the population. The prevalence of physical aggression was estimated at 3.7% in 5-11-year-old boys and ranged from .5% to 2.3% in 11 and 5-year-old girls, respectively. Hence, the results show a decreasing trend in the prevalence of physical aggression with age for girls, but not for boys. These findings suggest the importance of considering the developmental pathways of physical aggression for boys and girls separately.     

文本阅读中背景信息的加工过程：激活与整合

采用移动窗口技术和眼动技术探讨了文本阅读中当前信息跟背景信息的具体加工过程。被试为华南师范大学本科生92名。实验1使用移动窗口技术,计算机屏幕上每次只呈现一个句子,让被试自己按键逐句进行阅读,通过分析不同实验条件下探测词的再认反应时间和不同实验条件下目标句的阅读时间来探讨文本阅读中信息加工的具体过程。实验2使用眼动技术在一种更自然的情境中通过分析不同实验条件下眼动指标的差异来进一步探讨文本阅读中信息加工的具体过程。实验结果表明,文本阅读中背景信息的加工过程包括激活和整合两个阶段,这两个阶段相互独立但又紧密联系,激活是整合发生的前提,有整合必先发生激活,但激活发生后并不一定会发生整合;文本阅读过程中读者阅读时间的延长主要发生在整合阶段     

慢性应激对大鼠海马Akt/FKHRL1信号通路活性的影响

探讨慢性应激对大鼠海马Akt/FKHRL1信号通路活性的影响,及其应激源特异性。将24只雄性SD大鼠随机分为心理应激组、束缚应激组和正常对照组（n=8）。用Western-blotting方法测定28天应激后海马Akt、FKHRL1蛋白含量及其磷酸化水平。结果表明,应激后三组大鼠海马磷酸化Akt、FKHRL1含量差异有统计学意义（p < 0.01;p < 0.001）,束缚应激组低于正常对照组（p < 0.01）。提示慢性应激能导致海马磷酸化Akt、FKHRL1表达水平降低,但其影响程度与应激源特异性有关     

空间书写障碍的个案研究

根据书写加工理论,从异形字水平、图解动作模式水平和神经动作执行水平三个方面,综合考察一例空间书写障碍儿童的认知加工特点。结果表明：（1）个案QY的异形字水平出现选择性损伤,在视觉整体特征的知觉加工上存在困难,导致自发书写的汉字难以辨识,存在严重的间架结构问题。（2）个案QY在图解动作模式水平以及神经动作执行水平上表现正常     

The effect of information overlap on communication effectiveness

It makes sense that the more information people share, the better they communicate. To evaluate the effect of knowledge overlap on the effectiveness of communication, participants played a communication game where the "director" identified objects to the "addressee". Pairs either shared information about most objects' names (high overlap), or about the minority of objects' names (low overlap). We found that high-overlap directors tended to use more names than low overlap directors. High overlap directors also used more names with objects whose names only they knew, thereby confusing their addressees more often than low-overlap directors. We conclude that while sharing more knowledge can be beneficial to communication overall, it can cause communication to be locally ineffective. Sharing more information reduces communication effectiveness precisely when there is an opportunity to inform-when people communicate information only they themselves know.     

情境模型的实质：命题符号与知觉符号之争

阅读理解中情境模型的建构是当今阅读研究的热点。传统命题符号理论认为情境模型是组相关命题,是非模式符号系统;随着知识表征理论的发展,知觉符号理论认为情境模型的建构包括模式符号系统,即含有知觉符号。文章对比了两种理论对情境模型的不同解释,并介绍了相关的实证研究,最后对未来验证两种理论的研究方向进行了展望。