Processing Fat-Related Information in Individuals at Risk for Developing an Eating Disorder

The authors examined the effect that being at risk for developing an eating disorder has on the lexical processing of words related to fat and words not related to fat. Individuals (n = 17) at risk for developing an eating disorder were compared with controls (n = 31) using a lexical decision task in which fat-related words (e.g., large), unrelated words (e.g., fair), neutral words (e.g., post), and pseudowords (e.g., flirp) were given. The results revealed an expected Group x Stimuli interaction for reaction times indicating that at-risk individuals were significantly faster at processing fat-related words than words unrelated to fat. The authors discuss these results within the context of how fat-related stimuli are processed in at-risk individuals and how models of information processing can aid in the interpretation and understanding of eating disorders.     

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。     

Co-occurrence frequency evaluated with large language corpora boosts semantic priming effects

In recent decades, many computational techniques have been developed to analyse the contextual usage of words in large language corpora. The present study examined whether the co-occurrence frequency obtained from large language corpora might boost purely semantic priming effects. Two experiments were conducted: one with conscious semantic priming, the other with subliminal semantic priming. Both experiments contrasted three semantic priming contexts: an unrelated priming context and two related priming contexts with word pairs that are semantically related and that co-occur either frequently or infrequently. In the conscious priming presentation (166-ms stimulus-onset asynchrony, SOA), a semantic priming effect was recorded in both related priming contexts, which was greater with higher co-occurrence frequency. In the subliminal priming presentation (66-ms SOA), no significant priming effect was shown, regardless of the related priming context. These results show that co-occurrence frequency boosts pure semantic priming effects and are discussed with reference to models of semantic network.     

短期习得的语言范畴使成人大脑右半球颜色范畴知觉转为左半球颜色范畴知觉

本研究探讨了色词与颜色重组训练能否让被试习得与真实情境相似的色词与颜色范畴联结, 并引起相应的偏侧化颜色范畴知觉, 从而进一步揭示语言编码对颜色范畴知觉的影响。采用六种蓝色作为材料。B1与B2为先前研究的两种蓝色。B11和B12, B21和B22分别为使B1, B2变浅和变深所得, 四者是连续的蓝色。训练被试分别用“duān”和“kěn”命名B1和B2。由于被试可能习得色词与颜色范畴的联结, 因此B12与B21为可能变范畴间颜色, B11和B12, B21和B22为可能变范畴内颜色。训练前后分别让被试完成一个视觉搜索测验。结果发现：前测中可能变范畴间颜色的辨别优于可能变范畴内颜色, 且在左视野呈现时更显著; 后测中可能变范畴间颜色的辨别同样优于可能变范畴内颜色, 但在右视野呈现时更显著。这提示：(1)人们在知觉同一语言范畴的不同颜色时可能会区分深浅范畴, 并因此引发右半球颜色范畴知觉; (2)短期习得的语言范畴能引起偏左半球颜色范畴知觉, 且使右半球颜色范畴知觉转为左半球颜色范畴知觉; (3)被试在训练中习得了色词与颜色范畴的联结; (4)范畴学习可以在仅学习一个样例的条件下自动发生。     

Trouble articulating the right words: Evidence for a response‐exclusion account of distraction during semantic fluency

It is widely held that single‐word lexical access is a competitive process, a view based largely on the observation that naming a picture is slowed in the presence of a distractor‐word. However, problematic for this view is that a low‐frequency distractor‐word slows the naming of a picture more than does a high‐frequency word. This supports an alternative, response‐exclusion, account in which a distractor‐word interferes because it must be excluded from an articulatory output buffer before the right word can be articulated (the picture name): A high, compared to low, frequency word accesses the buffer more quickly and, as such, can also be excluded more quickly. Here we studied the respective roles of competition and response‐exclusion for the first time in the context of semantic verbal fluency, a setting requiring the accessing of, and production of, multiple words from long‐term memory in response to a single semantic cue. We show that disruption to semantic fluency by a sequence of to‐be‐ignored spoken distractors is also greater when those distractors are low in frequency, thereby extending the explanatory compass of the response‐exclusion account to a multiple‐word production setting and casting further doubt on the lexical‐selection‐by‐competition view. The results can be understood as reflecting the contribution of speech output processes to semantic fluency.     

Positive effects of low intensity recorded maternal voice on physiologic reactions in premature infants

ObjectiveTo evaluate the effect of low intensity recorded maternal voice on the physiologic reactions of healthy premature infants in the neonatal intensive care unit (NICU).MethodsPhysiologic responses of 20 healthy preterm infants in the NICU of Shariati Hospital, Tehran, were obtained during a 15 min intervention including three 5 min periods (no-sound control, audio recorded playback of mother’s voice, no-sound post-voice). The intervention was presented three times a day for three consecutive days. During each intervention, oxygen saturation (%, OSPR), heart rate (HR), and respiratory rate (RR) were recorded at 1 min intervals over the 15 min and then averaged over each 5 min period, resulting in 3 averages for each variable for each intervention.ResultsRepeated Measures Analysis of Variance were employed to examine each variable separately. Over the three days, comparison of oxygen saturation over each of the three periods (before, during voice, after) revealed an increase in oxygen saturation during the voice period, compared to the pre-voice period, which persisted over the post-voice period; there were no differences between the voice and post-voice periods. Analyses of the HR and RR data showed a decrease in both variables during the voice period compared to the pre-voice period which persisted over the post-voice period. Again, there were no differences between the voice and post-voice periods.ConclusionExposure to low intensity recorded maternal voice has positive effects on the preterm infants ‘physiologic responses.     

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。     

韵律在语言加工中的作用及其神经机制

综述了近年来使用即时加工方法进行的韵律理解和作用机制方面的一些研究。首先, 介绍了韵律特征在句法加工中的作用, 从重音、韵律边界和韵律单元三个研究角度分析了韵律在句子理解中所起的作用及作用的时间点; 然后, 探讨了韵律加工的脑机制问题。论文最后提出未来的研究应在更广阔的视野中对韵律的加工阶段以及韵律与其他心理过程之间的关系进行探讨。     

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。