Visual pattern memory requires foraging function in the central complex of Drosophila

The role of the foraging (for) gene, which encodes a cyclic guanosine-3',5'-monophosphate (cGMP)-dependent protein kinase (PKG), in food-search behavior in Drosophila has been intensively studied. However, its functions in other complex behaviors have not been well-characterized. Here, we show experimentally in Drosophila that the for gene is required in the operant visual learning paradigm. Visual pattern memory was normal in a natural variant rover (for(R)) but was impaired in another natural variant sitter (for(S)), which has a lower PKG level. Memory defects in for(S) flies could be rescued by either constitutive or adult-limited expression of for in the fan-shaped body. Interestingly, we showed that such rescue also occurred when for was expressed in the ellipsoid body. Additionally, expression of for in the fifth layer of the fan-shaped body restored sufficient memory for the pattern parameter "elevation" but not for "contour orientation," whereas expression of for in the ellipsoid body restored sufficient memory for both parameters. Our study defines a Drosophila model for further understanding the role of cGMP-PKG signaling in associative learning/memory and the neural circuit underlying this for-dependent visual pattern memory.     

对“家属签字”制度的立法思考

李丽云悲剧的发生,使《医疗机构管理条例》第三十三条规定的“家属签字”制度成为公众及法律界人士关注的焦点。“家属签字”制度受到道德和法律的双重拷问。从“家属签字”制度中潜在的法律推定出发,对“家属签字”制度的正当性依据、“特殊情况”下对患者的求生推定等六方面问题做些有益探讨,以期完善我国医疗管理法律法规。     

高级职业经理人胜任特质评定探索

为了方便企业甄选所需要的高级管理人才,本文就“高级职业经理人胜任特质评定量表”的编制过程及其量表的结构分析做一报告。该量表分为认知基质、组织协调、领导力、个性倾向和自我调节五个纬度和一个测谎的分量表。本研究立足于中国本土文化,采用小组中心访谈和多种统计分析技术对中国的高级职业经理人的胜任特质进行测评,结果显示总量表和各纬度上的项目具有较高的同质性信度和结构效度,具有较好的鉴别力。     

大学生因特网成瘾障碍的研究

本研究根据目前广泛认可的因特网成瘾障碍(Internet Addiction Disorder,IAD)诊断标准自编问卷,调查了上海市6所高校370名大学生的上网情况。结果表明:(1)自编问卷质量的各指标皆良好,问卷具有较好的稳定性和准确性。(2)上海市大学生IAD的发生率大约为8.1%。(3)男生比女生、理科比文科、大二年级比其它年级的学生陷入网络的程度深。(4)上网者每周的上网时间、使用网络工具的数量、上网动机的数量与使用网络的程度相关。(5)IAD者在网络使用的特点上明显不同于非IAD者(N-IAD者)。     

情绪启动研究的实验范式

情绪启动是探讨情绪和态度自动激活的有效方法,近期其研究范式有了较大的发展,相继产生了经典情绪启动实验、阈下情绪启动实验、向后情绪启动实验以及情绪启动与其他范式相结合的实验等较有影响的研究范式。文章分别梳理了这些范式及其研究结果,并在此基础上,总结研究所采用的范式并展望今后研究的发展趋势。     

Similarity structure in visual speech perception and optical phonetic signals

A complete understanding of visual phonetic perception (lipreading) requires linking perceptual effects to physical stimulus properties. However, the talking face is a highly complex stimulus, affording innumerable possible physical measurements. In the search for isomorphism between stimulus properties and phoneticeffects, second-order isomorphism was examined between theperceptual similarities of video-recorded perceptually identified speech syllables and the physical similarities among the stimuli. Four talkers produced the stimulus syllables comprising 23 initial consonants followed by one of three vowels. Six normal-hearing participants identified the syllables in a visual-only condition. Perceptual stimulus dissimilarity was quantified using the Euclidean distances between stimuli in perceptual spaces obtained via multidimensional scaling. Physical stimulus dissimilarity was quantified using face points recorded in three dimensions by an optical motion capture system. The variance accounted for in the relationship between the perceptual and the physical dissimilarities was evaluated using both the raw dissimilarities and the weighted dissimilarities. With weighting and the full set of 3-D optical data, the variance accounted for ranged between 46% and 66% across talkers and between 49% and 64% across vowels. The robust second-order relationship between the sparse 3-D point representation of visible speech and the perceptual effects suggests that the 3-D point representation is a viable basis for controlled studies of first-order relationships between visual phonetic perception and physical stimulus attributes.     

中西比较的新思路:哲学拓扑学的视野

哲学研究的生命在于从习以为常的日常概念中发现问题,从而推进我们对这些概念的认识。在这种意义上,哲学研究也是一种创造性活动。伍晓明先生和江怡先生在英国牛津大学的一番对话,试图通过揭示中国文化中的"天命"概念的哲学意蕴及其与西方哲学的重要差别,说明中西文化在思想出发点上的根本差别;同时,他们对"哲学拓扑学"的讨论,有助于我们加深对中西文化特征的认识,并由此开启新的研究思路。     

岭南黄大仙考辨——以罗浮山野人传说为中心

黄大仙民间俗信近世以来在粤港的兴盛离不开地方性社会传说的融入与互动,有着较为独立起源与流变系统的罗浮山黄野人传说是黄大仙信仰在岭南得到继承与发展的重要中介。通过文人笔记、诗文吟咏、地方志载与田野研究,可以看到道教改造、民众臆想及附会创造对野人传说演进的作用,并使得罗浮野人地方性传说成为今天中国黄大仙信仰文化不可分割的一个部分。     

普遍道德语法述评

普遍道德语法是当前在西方道德心理研究领域出现的一种新的研究框架.它将道德与语言类比,试图用类似于研究语言的概念和模式来描述道德知识的本质与起源,解答人类道德判断的心理机制问题.由于道德与语言不完全相似,普遍道德语法存在不可忽视的缺陷,但仍提供了从不同角度研究道德能力的有效观点.