图形项目记忆与位置来源提取的ERP研究

采用事件相关电位（ERP）方法研究大学生图形项目记忆与位置来源提取新/旧效应的时、空分布特征。学习屏幕左侧（或右侧）呈现的图形后在屏幕中央呈现某一测验项目（已学图形或新图形）,对受试者进行两类测验：其一是判断该项目是否已学过;其二是将从某侧学过的测验项目判断为目标,而将其它测验项目判断为非目标的来源测验（排除任务）。实验结果表明：图形位置来源提取比项目再认新/旧效应的头皮分布更广,持续时程更长;与前人相同实验范式的研究结果相比,本研究位置来源提取效应的头皮分布范围较广;非目标-旧图形与目标图形新/旧效应的头皮激活程度不同。上述结果说明：图形位置来源提取比项目再认激活的大脑区域更多,这与双重加工模型的观点一致;实验范式和来源知觉的特性共同调节来源记忆新/旧效应的时、空分布特征;意识水平对来源信息提取的新/旧效应存在一定的影响     

The reconfiguration of task set has no effect on the efficiency of feature search

In this study, we investigated whether or not the reconfiguration of a set task could modulate the efficiency of feature search. In Experiment 1, target set size was manipulated. The results revealed that enumerating targets defined by color yields a much steeper slope when executed simultaneously with a discrimination task than when done singly. However, when distractor set size was manipulated, there was no significant difference in the efficiency of individualizing targets from distractors between the two task conditions, no matter whetherthe search was guided by bottom-up information (Experiment 2) or top-down information (Experiment 3). Drawing upon these results, the authors propose that (1) an additional task can impair the efficiency of enumeration, resulting in a steep slope of counting even when target set size is quite small, and (2) in feature search, the visual system first reconfigures the task set to match the input feature information and then detects the targets with an optimal efficiency, which does not support the theory proposed by Di Lollo, Kawahara, Zuvic, and Visser (2001; Di Lollo, Smilek, Kawahara, & Ghorashi, 2005).     

基层医院口腔科如何构建和谐医患关系

基层医院口腔科容易引起医患纠纷,本文从基层医院口腔科以及口腔医生的角度谈谈如何构建和谐的医患关系。基层医院口腔医生要掌握扎实的专业理论知识和操作技能以及加强自身修养,并进行良好的医患沟通;基层医院口腔科要营造舒适的就医环境,合理收费,严格的消毒灭菌。构建和谐医患关系在口腔治疗中的起重要作用。     

癌蛋白促凋亡现象引发的思考

肿瘤生物学中一个矛盾现象是:曾经被认为促进肿瘤生长增殖的癌蛋白,现在发现它可以引起肿瘤细胞自杀。自杀行为由癌蛋白促凋亡介导完成,MYC是其中的典型代表,癌蛋白的这种行为可能对肿瘤的发生发展具有重大意义,目前通过诱导肿瘤细胞凋亡治疗癌症是否完全合理,有待临床实践的进一步验证,今后的抗癌治疗应该辩证合理地看待肿瘤细胞凋亡。     

关于慢性乙肝病毒携带者治疗问题的商榷

从乙型肝炎病毒(HBV)在体内存在的不同阶段、乙型肝炎发病机制及目前抗病毒治疗现状对慢性乙肝病毒携带者治疗问题进行了初步探讨,提出了绝大多数慢性乙肝病毒携带者不需要治疗的理由,以指导患者和医务人员解决相关问题.     

成人在错误信念任务上的表现

考察成人在错误信念(FB)任务上是否存在"知识偏差"效应。实验1重复Birch等的实验程序并未得到与之一致的结果,成人在FB任务上的表现不理想,且无"知识偏差"效应存在。实验2排除琴盒位置及颜色的突出性影响后,结果与实验1相似。成人在FB任务上的不佳表现与成人具有心理理论的事实相悖,说明把通过FB任务作为衡量心理理论的唯一评定标准有待商榷。     

坚持科学精神，反对与抵制伪科学作为“科普法”的条文是必要和及时的

"科普法"于2002年6月29日经全国人民代表大会常务委员会第二十八次会议通过并颁布实施。科普法总则第一条中明确指出制定和颁布科普法的     

The Effect of Disruptions During Counseling on Recall of Genetic Risk Information: The Case of Cystic Fibrosis

Genetic counseling is a communication process with two main functions: information provision and supportive counseling. The information transmission function may be compromised by disruptions that occur during counseling. At least two mediators are possible: (a) disruptions may interfere with memory by creating distractions and divided attention during encoding or (b) disruptions may degrade the flow of interaction which requires that participants engage in conversation repair rather than the task at hand. This study examined both alternatives in a group of parents (N=20 families, 40 individual parents) whose infant had received a newborn screening for cystic fibrosis (CF). Upon arrival at the hospital, each parent completed a questionnaire designed to assess his or her knowledge of CF. Their interaction with the genetic counselor was videotaped and coded for the presence of disruptions. Six weeks after the counseling, parents again completed the knowledge measure. The data showed a direct negative effect for disruptions during counseling on memory for CF-related risk information six weeks later. Disruptions also produced the anticipated effect on conversation, but counter to expectations, interruptions of conversation flow was positively associated with knowledge at time 2.     

正念禅修在心理治疗和医学领域中的应用

正念禅修渊源于南传佛教中的毗婆舍那禅修传统,指透过如实观察身心变化实相而达至烦恼解脱的禅修方法,于20世纪80年代初被引入心理治疗和医学领域后,其临床应用和相关研究日益增多.本文主要介绍了其中最为突出的正念减压疗法(MBSR)、正念认知行为治疗(MBCT)、辩证行为治疗(DBT),以及正念在创伤治疗中的应用情况;并综述了正念疗法在医疗保健和心理治疗领域的应用、疗效、作用机制等方面的相关研究.     

存在焦虑的研究述评

存在焦虑是焦虑本体论的一种定义,是哲学、文学和心理学领域的重要概念之一。在心理学领域,存在焦虑理论主要包括罗洛·梅的焦虑本体论,布根塔尔的存在焦虑理论及存在焦虑与心理健康关系理论等等。目前的研究方法主要是量表测量法,但尚不成熟。为数不多的实证研究主要集中在：存在焦虑与心理健康的关系,与同一性地位的关系,与焦虑、抑郁的关系等等。今后研究的重点应包括概念研究的丰富、研究对象的拓宽及研究方法的改进和完善等