慢性房颤的导管消融：时机已经成熟

心房解剖及电重构基础上的多发子波折返是慢性房颤的维持机制,支持线性消融策略;导管消融有关的操作逐渐标准化;盐水灌注导管和三维标测系统等新器械不断进展;慢性房颤消融策略的争议逐渐减少,采用肺静脉隔离加线性消融者越来越多;消融终点更多的以肺静脉隔离和线性阻滞为主,以直接终止心动过速为终点者减少。慢性房颤的导管消融时机已经成...     

Preference and resistance to change in concurrent variable-interval schedules

Pigeons were trained on a multiple schedule in which separate concurrent schedules were presented in the two components of the schedule. During one component, concurrent variable-interval 40-sec variable-interval 80-sec schedules operated. In the second component, concurrent variable-interval 40-sec variable-interval 20-sec schedules operated. After stable baseline performance was obtained in both components, extinction probe choice tests were presented to assess preference between the variable-interval 40-sec schedules from the two components. The variable-interval 40-sec schedule paired with the variable-interval 80-sec schedule was preferred over the variable-interval 40-sec schedule paired with the variable-interval 20-sec schedule. The subjects were also exposed to several resistance-to-change manipulations: (1) prefeeding prior to the experimental session, (2) a free-food schedule added to timeout periods separating components, and (3) extinction. The results indicated that preference and resistance to change do not necessarily covary.     

颅内动脉瘤治疗方案选择的多维思考

针对颅内动脉瘤手术治疗和血管内治疗的优缺点,分析不同治疗方式的疗效与经济费用比较,就如何选择治疗方法提出医疗原则,并对医疗原则进行伦理学思考,认为治疗应该体现安全、有效、经济的原则.     

图示写实性对飞机安全须知卡可理解性的影响

本研究使用眼动技术及模拟操作任务考察了图示写实性对飞机安全须知卡可理解性的影响。三组被试分别阅读写实照片、卡通插画、目标实物+其余图画的混合呈现等三种不同呈现形式的安全须知示意图,随后完成模拟操作任务。结果显示,混合组较写实组能更好地引导被试注意投放到与安全操作有关的关键区域上;混合组与写实组的模拟操作绩效均优于卡通组。基于上述结果,笔者建议使用"混合呈现方式"的飞机安全须知卡向乘客传递安全信息。     

Patterns of brain-electrical activity during declarative memory performance in 10-month-old infants

This study of infant declarative memory concurrently examined brain-electrical activity and deferred imitation performance in 10-month-old infants. Continuous electroencephalogram (EEG) measures were collected throughout the activity-matched baseline, encoding (modeling) and retrieval (delayed test) phases of a within-subjects deferred imitation task. Infants were divided into two memory performance groups based on the exhibition of ordered-recall after a 24-h delay. Whereas no group differences were found in EEG collected during encoding, performance-group differences in EEG were present during retrieval. Infants who successfully displayed ordered-recall showed a pattern of increasing EEG from baseline to task at anterior temporal scalp locations, whereas infants showing no ordered-recall displayed no changes in EEG from baseline to task. These findings are discussed with respect to the biobehavioral developments underlying declarative memory abilities.     

注意缺陷多动障碍的研究与治疗

注意缺陷多动障碍（ADHD）的发病群体多为5岁以后的儿童,主要临床表现是多动、冲动,注意力无法集中,对一项任务不能够有规划进行下去,而且脾气暴躁、易怒。近年来,心理学界、神经科学界和教育学界等对ADHD的研究取得了很多进展。本文概括性地介绍了ADHD病症的基本特征,目前对于患者脑机制损害的研究,并从药理学和行为学等方面讨论了ADHD的治疗方法和手段。     

公共物品两难中相互依赖关系对合作行为的影响

本文关注初始关系建立过程中互动双方相互依赖关系对个体合作行为的影响,认为情境中表征个体间相互依赖关系的线索会对激活被试在情境中的社会动机并影响被试的信任信念,进而影响互动双方的合作行为。操作互动双方问基于互动制约的相互依赖和基于利益共同的相互依赖,模拟高相互依赖和低相互依赖关系情境。结果表明：①不同的相互依赖关系能够激活不同的社会动机和信任信念;②不同的相互依赖关系中,被试的合作行为有显著差异;③在特定的相互依赖关系中,被试的合作行为与其本身的信任倾向无显著相关;④特定相互依赖关系下被试的社会动机带有策略性,信任信念对被试合作行为的预测能力较强。