ICU向患者家属开放的理论研究

ICU实行的基本是封闭式管理,这不仅带来了一些伦理问题,也容易引发医疗纠纷,从伦理学的需要、预防医疗纠纷、改善医患关系等方面探讨ICU向患者家属开放的必要性,分析开放存在的问题,论证了ICU向患者家属开放的可行性。     

Apprentissage, mémorisation, et généralisation de nouveaux noms chez l'enfant trisomique 21. Une comparaison avec l'enfant en développement normal

We compared a group of Down syndrome participants with a group of normally developing children matched on mental age in a lexical learning task. Participants had to learn the name of four unfamiliar animals or musical instruments. Training was assessed through a naming and a pointing task, immediately after the end of the training phase, two days later, or two weeks later. Results revealed that participants with Down syndrome were better than the control group in the naming (production) task. We conclude that the learning processes involved in a novel name-learning task are not impaired in the Down syndrome persons. The two groups used the contextual cues in the same way. Finally, the notion of fast mapping in lexical learning is also discussed.     

新生儿重症监护室中放弃治疗的伦理问题

对于新生儿重症监护室中的一部分危重新生儿,虽然可以借助高新尖的医疗技术挽留他们的性命,但却不能避免其出现影响远期生存质量的后遗症。因此患儿家属和医务人员陷入了是否对这些危重新生儿实施放弃治疗的两难困境。对NICU中放弃治疗的对象、伦理学依据、伦理学意义以及如何实施放弃治疗的问题加以讨论,为NICU医务人员提供有益参考。     

Evidence from masked‐priming that initial identification of brand names is via abstract letter identities

Although visual‐word recognition is often assumed to proceed on the basis of case‐invariant letter representations, previous research has shown a role for letter‐case in recognizing brand names. One recent study reported early effects of letter‐case in a brand‐decision task using masked primes (Perea et al., 2015, British Journal of Psychology, 106, 162). The present study attempts to replicate this finding using brand names typically presented in all lowercase (e.g., adidas), all uppercase (e.g., IKEA), or titlecase (e.g., Ford). Across three masked‐priming experiments, we found no advantage for case‐matched identity primes over case‐mismatched identity primes. This finding suggests that brand‐specific letter‐case information does not play a role in the early processing of brand names. However, we observed evidence that case may be used as a cue for making brand decisions, which may explain the effect reported by Perea et al. (2015, British Journal of Psychology, 106, 162).     

语义类标记在中国手语词词汇识别和语义提取中的作用

通过2个实验, 考察了语义类标记在中国手语词汇识别和语义提取中的作用。实验1采用手语词汇判断任务, 比较了有、无语义类标记的手语词汇识别。实验2采用语义决定任务, 探讨了语义类标记对手语词语义提取的影响。结果表明, 语义类标记影响聋生对手语词的识别和语义提取。聋生识别有语义类标记的手语词显著快于识别无语义类标记的手语词。当语义类标记与手语词的语义一致时, 能够促进聋生对手语词的语义提取; 当语义类标记与手语词的语义不一致, 会干扰聋生对手语词的语义提取。中国手语词语义类标记效应的发现, 丰富了中国手语词词汇认知的理论, 对聋人的语言教学和概念教学具有重要的启示。     

中-英双语者词汇语义通达的大脑功能偏侧化与合作效应

采用半视野速示术对48名英语专业硕士研究生进行词汇判别的语义启动实验,检查中一英双语者词汇语义通达可能存在的大脑功能偏侧化与合作效应.结果提示:(1)相对熟练的中一英双语者L1(中文)和L2(英文)均可直接通达一个共同的词汇语义概念表征系统,但L1可以通过两半球,而L2可能主要依赖于大脑右半球;(2)跨语言条件出现了半球间语义通达的合作优势效应.     

非熟练中——英双语者的第二语言的语义通达机制

使用跨语言启动条件下的真假字判断任务,通过变化启动刺激(英文单词)与目标刺激(汉字)采用4个实验研究了中-英非熟练双语者的第二语言的语义通达机制。被试为北京师范大学的学生63名。结果发现,当启动刺激(英文单词)的中文对译词与目标刺激之间的关系是翻译关系时,得到了显著的启动效应(实验一);当两者之间是语义联想关系时,前者对后者没有显著的影响(实验二);当两者之间是形似关系时,前者对后者产生了显著的抑制作用(实验三)：当两者之间是同音关系时,前者对后者产生了显著的促进作用。这一结果表明,对于中国的英语学习者来说,他们的第二语言只能借助其汉语对译词的词汇表征通达其语义概念表征,实验结果在一定程度上支持了Mroll(1994)的层次模型。     

Group-based reasons for action

This article endorses a familiar, albeit controversial, argument for the existence of group-based reasons for action, but then rejects two doctrines which other advocates of such reasons usually accept. One such doctrine is the willingness requirement, which says that a group-based reason exists only if (sufficient) other members of the group in question are willing to cooperate. Thus the paper argues that there is sometimes a reason, which derives from the rationality of some group action, to play one's part unilaterally in that group action. This seems implausible only because we tend wrongly to accept a second doctrine, monism about the unit of agency. Monism claims that, for any given deliberative problem, there is only one unit of agency to which reasons attach. If we are monists who believe in group-based reasons, the willingness requirement will seem necessary in order to avoid recklessness. We should reject monism, and if we do so we can recognise genuine conflict between individual-based and group-based reasons, and in doing so we can explain, without endorsing the willingness requirement, why we should not act recklessly.     

ENSEMBLE RECORDINGS IN AWAKE RATS: ACHIEVING BEHAVIORAL REGULARITY DURING MULTIMODAL STIMULUS PROCESSING AND DISCRIMINATIVE LEARNING

To meet an increasing need to examine the neurophysiological underpinnings of behavior in rats, we developed a behavioral system for studying sensory processing, attention and discrimination learning in rats while recording firing patterns of neurons in one or more brain areas of interest. Because neuronal activity is sensitive to variations in behavior which may confound the identification of neural correlates, a specific aim of the study was to allow rats to sample sensory stimuli under conditions of strong behavioral regularity. Our behavioral system allows multimodal stimulus presentation and is coupled to modules for delivering reinforcement, simultaneous monitoring of behavior and recording of ensembles of well isolated single neurons. Using training protocols for simple and compound discrimination, we validated the behavioral system with a group of 4 rats. Within these tasks, a majority of medial prefrontal neurons showed significant firing‐rate changes correlated to one or more trial events that could not be explained from significant variation in head position. Thus, ensemble recordings can be combined with discriminative learning tasks under conditions of strong behavioral regularity.     

语音短时记忆与词汇知识对第二语言词汇学习的影响

选取两种语音熟悉程度不同的非词为实验材料,把语音短时记忆区分为项目短时记忆和序列短时记忆,考察语音短时记忆与词汇知识对汉英双语者第二语言（英语）词汇学习的影响。实验1采用产出性的方式进行学习,结果发现,词汇知识与项目短时记忆对语音熟悉非词的学习起预测作用;词汇知识与序列短时记忆对语音不熟悉非词学习起预测作用。实验2采用接受性的方式进行学习,结果发现,项目短时记忆、序列短时记忆和词汇知识都对语音熟悉非词学习起独立的预测作用;项目短时记忆和序列短时记忆对语音不熟悉非词学习起独立的预测作用。实验结果表明,语音短时记忆和词汇知识都是影响英语词汇学习的重要因素。具体而言,学习语音熟悉的词汇,词汇知识起着更为重要的作用;学习语音不熟悉的词汇,语音短时记忆、特别是序列短时记忆起着更为重要的作用,而且两者作用的大小随着词汇学习方式的不同而发生变化。