大学生脑科学素养现状调查

采用《大学生脑科学素养问卷》,对天津市1450名大学生脑科学素养现状进行了调查分析。结果显示:(1)大学生总体脑科学问卷正确率显著低于60%,其中,脑的功能、脑的组织结构和脑与学方面的得分更低;(2)书籍、网络和电视是大学生获取脑科学知识的重要渠道;(3)大学生对脑科学知识的总体关心程度偏低;(4)大学生脑科学素养水平受成长环境和父母文化程度因素的影响,存在年级和性别差异。     

Millisecond-accurate synchronization of visual stimulus displays for cognitive research

A widely adopted approach in cognitive psychology research is to analyze changes in the response time to a stimulus onset in order to infer information about the cognitive functioning of a subject being tested. But current techniques have inherent variations in the timing between stimulus activation and stimulus display of up to tens of milliseconds, thereby introducing significant errors when response time or the latency of neural responses is measured. This article presents a novel yet easy-to-implement solution for improving resolution in the synchronizing of stimulus activation and stimulus display. Unlike traditional methods in which the stimulus onset is set as the time at which the routine for displaying the stimulus is called, this approach uses DirectX to monitor the scan line of CRTs and sets the stimulus onset to the time at which the scan line arrives at the position where the stimulus is to be drawn. This approach removes the uncertainty involved in having a time delay between the activation of the display routine and the actual time at which the display occurs, improving the accuracy of response time and latency period measurements to within 200 μsec. With a specially developed driver, this solution can generate a trigger signal synchronized precisely with the stimulus onset in all popular Windows systems (including Windows 2000/XP).     

Individual differences in utilizing control to cope with job demands: effects on susceptibility to infectious disease

This study examined the interactive effects of job demands, control, and individual characteristics on upper respiratory illnesses and immune function. Having high job control appeared to lessen the linkage between job demands and poor health among individuals with high self-efficacy and those who perceived that they were not often responsible for negative job outcomes. Conversely, having high job control exacerbated the association between job demands and poor health among inefficacious individuals. Implications for promoting more healthful work environments and facilitating employee coping are discussed.     

Differential Effect of TEA on Long-Term Synaptic Modification in Hippocampal CA1 and Dentate Gyrus in vitro

The effectiveness of tetraethylammonium (TEA) and high-frequency stimulation (HFS) in inducing long-term synaptic modification is compared in CA1 and dentate gyrus (DG) in vitro. High-frequency stimulation induces long-term potentiation (LTP) at synapses of both perforant path-DG granule cell and Schaffer collateral-CA1 pyramidal cell pathways. By contrast, TEA (25 mM) induces long-term depression in DG while inducing LTP in CA1. The mechanisms underlying the differential effect of TEA in CA1 and DG were investigated. It was observed that T-type voltage-dependent calcium channel (VDCC) blocker, Ni²⁺ (50 μM), partially blocked TEA-induced LTP in CA1. A complete blockade of the TEA-induced LTP occurred when Ni²⁺ was applied together with the NMDA receptor antagonist, D-APV. The L-type VDCC blocker, nifidipine (20 μM), had no effect on CA1 TEA-induced LTP. In DG of the same slice, TEA actually induced long-term depression (LTD) instead of LTP, an effect that was blocked by D-APV. Neither T-type nor L-type VDCC blockade could prevent this LTD. When the calcium concentration in the perfusion medium was increased, TEA induced a weak LTP in DG that was blocked by Ni²⁺. During exposure to TEA, the magnitude of field EPSPs was increased in both CA1 and DG, but the increase was substantially greater in CA1. Tetraethylammonium application also was associated with a large, late EPSP component in CA1 that persisted even after severing the connections between CA3 and CA1. All of the TEA effects in CA1, however, were dramatically reduced by Ni²⁺. The results of this study indicate that TEA indirectly acts via both T-type VDCCs and NMDA receptors in CA1 and, as a consequence, induces LTP. By contrast, TEA indirectly acts via only NMDA receptors in DG and results in LTD. The results raise the possibility of a major synaptic difference in the density and/or distribution of T-type VDCCs and NMDA receptors in CA1 and DG of the rat hippocampus.     

基督教神学与生活领域:从凯珀到斯塔克豪思

本文分析荷兰神学家亚伯拉罕·凯伯和美国神学家马克斯?斯塔克豪思在理解和促进神学与社会生活关联上各自的贡献:前者以普遍恩典和领域主权的观念为中心,后者则以全球化与恩典为考察重点。两者的公共神学存在着一定的思想联系,本文将进一步探析凯伯对斯塔克豪思的影响。这一研究意在表明公共生活领域对于神学思考的重要性,而时代的处境会提出神学必须面对的不同公共议题及其指向的特定神学信念和方法。     

略谈道家功法修真入门

道家功法,从北五祖、南五祖,至七真师祖,已有一套完整的性命双修功法,既是金液还丹,也是九转还丹法。其功理功法是以阴阳的造化,用清、浊、动、静、降本流末,而生万物的原理,以顺逆颠倒之法。顺去生人,逆来生仙。生仙也有十月怀胎,三年乳哺,九年调婴。丹经有云:“炼己无限,修仙有程。”炼己者即是从筑基到炼     

To change or not to change: A matter of decision maker’s role

The status quo effect derived from loss aversion is common in decision making. However, we propose that advisors (vs. personal decision makers) are less susceptible to such an effect because they are less loss-averse. The difference in loss aversion between personal decision makers and advisors is reflected in both the query order and content. Compared to advisors, personal decision makers produce more queries favoring the status quo, at an earlier time, than those favoring the new option. As hypothesized, the status quo effect was observed among personal decision makers, but not among advisors (Studies 1 and 2). Query order and content were found to mediate the impact of decision maker’s role on the status quo effect (Study 2). When personal decision makers and advisors made queries in the same order (Study 3) or of the same content (Studies 4a and 4b), the difference between self–other decision making disappeared.