情绪背景对面部表情识别的影响及其作用机制

正确识别面部表情对成功的社会交往有重要意义。面部表情识别受到情绪背景的影响。本文首先介绍了情绪背景对面部表情识别的增强作用,主要表现为视觉通道的情绪一致性效应和跨通道情绪整合效应;然后介绍了情绪背景对面部表情识别的阻碍作用,主要表现为情绪冲突效应和语义阻碍效应;接着介绍了情绪背景对中性和歧义面孔识别的影响,主要表现为背景的情绪诱发效应和阈下情绪启动效应;最后对现有研究进行了总结分析,提出了未来研究的建议。     

The Influence of Child-Directed Speech on Word Learning and Comprehension

This paper describes an investigation into the function of child-directed speech (CDS) across development. In the first experiment, 10–21-month-olds were presented with familiar words in CDS and trained on novel words in CDS or adult-directed speech (ADS). All children preferred the matching display for familiar words. However, only older toddlers in the CDS condition preferred the matching display for novel words. In Experiment 2, children 3–6 years of age were presented with a sentence comprehension task in CDS or ADS. Older children performed better overall than younger children with 5- and 6-year-olds performing above chance regardless of speech condition, while 3- and 4-year-olds only performed above chance when the sentences were presented in CDS. These findings provide support for the theory that CDS is most effective at the beginning of acquisition for particular constructions (e.g. vocabulary acquisition, syntactic comprehension) rather than at a particular age or for a particular task.     

Relative and Absolute Judgments of Speech Rate from Masked and Content-Standard Stimuli The Influence of Vocal Frequency and Intensity

In two previous studies, the perception of speech rate was found to be positively related to the vocal frequency and intensity of speech. In those studies, a single sample of spontaneous, content-masked speech was used to produce nine stimuli by factorially varying three levels of each vocal frequency and intensity, while controlling the actual speech rate of the stimuli. Participants were asked to judge each stimulus, preceded by a standard, “anchoring,” stimulus as to its speech rate, pitch, loudness, and duration. The purpose of the three studies reported here was to examine the generalizability of the previous findings by using stimuli that were nonmasked and/or were not preceded by an anchoring stimulus. In each study, nine speech stimuli were prepared, as described above, and participants were asked to make judgments about the rate, pitch, loudness, and duration of each stimulus. In the first study, the stimuli were masked but were not preceded by an anchoring stimulus. In the second study, participants listened to content-standard speech stimuli preceded by an anchoring stimulus. Finally, in the third study, content-standard stimuli without an anchoring stimulus were used. In addition, studies two and three used speech segments of a male and a female speaker. The findings from the three studies replicated the central findings of the previous studies. They suggest, in other words, that rate perception of speech is indeed influenced by vocal frequency and, to some extent, by intensity, and that these relationships are not materially altered by the speakers'gender.     

语音告警信号语速研究

用普通会话句表和飞机告警句表两种测试材料 ,以言语可懂度测试法和主观评价法研究言语告警信号的适宜语速。实验中的语速定为 0 .1 1、0 .1 5、0 .2 0、0 .2 5、0 .3 5和 0 .45秒 /字六级。实验模拟飞机座舱环境 ,采用计算机生成的数字化言语信号 ,在 90 d B(A)的飞机噪声环境下 ,通过耳机传递给被试。研究得到以下结论 :言语告警信号的适宜语速为 0 .2 5秒 /字 (或 4字 /秒 ) ,它的下限为 >0 .2 0秒 /字 (或 <5字 /秒 ) ,它的上限为 0 .3 0秒 /字 (或 3 .3 3字 /秒 )。     

Non-Modality Specific Speech Coding: The Processing Of Lip-Read Information

Two experiments investigated the nature of the code in which lip-read speech is processed. In Experiment 1 subjects repeated words, presented with lip-read and masked auditory components out of synchrony by 600 ms. In one condition the lip-read input preceded the auditory input, and in the second condition the auditory input preceded the lip-read input. Direction of the modality lead did not affect the accuracy of report. Unlike auditory/graphic letter matching (Wood, 1974), the processing code used to match lip-read and auditory stimuli is insensitive to the temporal ordering of the input modalities. In Experiment 2, subjects were presented with two types of lists of colour names: in one list some words were heard, and some read; the other list consisted of heard and lip-read words. When asked to recall words from only one type of input presentation, subjects confused lip-read and heard words more frequently than they confused heard and read words. The results indicate that lip-read and heard speech share a common, non-modality specific, processing stage that excludes graphically presented phonological information.     

社会主义荣辱观认同机制探析

知荣明辱是人类生存和发展的需要,是人性完善的前提,是社会和谐的基础.倡导社会主义荣辱观是我国现阶段经济社会发展的客观要求.倡导社会主义荣辱观必须以强化社会成员对荣辱观的认同为着眼点.为此,必须注意社会主义荣辱观的社会功效性和个体功效性的统一,以利益为手段进行价值观导向,建立与健全有效的社会监督机制,在注意教育主体的可信性、教育内容的可接纳性、教育目标的一致性的前提下大力开展社会主义荣辱观教育,强化人们对社会主义荣辱观的积极认同,从而充分发挥社会主义荣辱观的引导作用.     

L2 Word Recognition: Influence of L1 Orthography on Multi-syllabic Word Recognition

L2 reading research suggests that L1 orthographic experience influences L2 word recognition. Nevertheless, the findings on multi-syllabic words in English are still limited despite the fact that a vast majority of words are multi-syllabic. The study investigated whether L1 orthography influences the recognition of multi-syllabic words, focusing on the position of an embedded word. The participants were Arabic ESL learners, Chinese ESL learners, and native speakers of English. The task was a word search task, in which the participants identified a target word embedded in a pseudoword at the initial, middle, or final position. The search accuracy and speed indicated that all groups showed a strong preference for the initial position. The accuracy data further indicated group differences. The Arabic group showed higher accuracy in the final than middle, while the Chinese group showed the opposite and the native speakers showed no difference between the two positions. The findings suggest that L2 multi-syllabic word recognition involves unique processes.     

负性情绪强度对双加工再认提取的影响

双加工理论认为再认提取存在回想和熟悉性两种认知加工过程。本研究采用修正的“记得/知道”范式,考察不同强度的负性情绪对这两种再认提取过程的影响。结果发现：（1）在记得反应上不同负性情绪强度的材料呈现出以下模式：高度负性 > 中度负性 > 轻度负性 > 中性;（2）在知道反应上,不同负性情绪强度的材料呈现出以下模式：中性 > 轻度负性 > 中度负性 > 高度负性。这些结果表明,不同强度的负性材料对情绪记忆的影响表现为两条途径：依赖于回想的再认随着负性情绪强度的增加而逐步提高,另外一个依赖于熟悉性的再认随着负性情绪强度的增加而逐步降低。     

EARSHOT: A Minimal Neural Network Model of Incremental Human Speech Recognition

Despite the lack of invariance problem (the many-to-many mapping between acoustics and percepts), human listeners experience phonetic constancy and typically perceive what a speaker intends. Most models of human speech recognition (HSR) have side-stepped this problem, working with abstract, idealized inputs and deferring the challenge of working with real speech. In contrast, carefully engineered deep learning networks allow robust, real-world automatic speech recognition (ASR). However, the complexities of deep learning architectures and training regimens make it difficult to use them to provide direct insights into mechanisms that may support HSR. In this brief article, we report preliminary results from a two-layer network that borrows one element from ASR, long short-term memory nodes, which provide dynamic memory for a range of temporal spans. This allows the model to learn to map real speech from multiple talkers to semantic targets with high accuracy, with human-like timecourse of lexical access and phonological competition. Internal representations emerge that resemble phonetically organized responses in human superior temporal gyrus, suggesting that the model develops a distributed phonological code despite no explicit training on phonetic or phonemic targets. The ability to work with real speech is a major advance for cognitive models of HSR.     

The Influence of Skill and Intermittent Vision on Dynamic Balance

Two experiments are reported in which expert and novice gymnasts were required to walk across a balance beam as quickly as possible in various vision conditions. In Experiment 1, experts walked faster than novices in all vision conditions, showing the greatest superiority when vision was completely eliminated. Novices were more dependent on vision and were able to maintain their performance as long as a visual sample was available every 250 ms (i.e: 4-Hz samples).The results of Experiment 2 indicate that differences between expert and novice performers in the no-vision condition were not related to the use of a short-term visual representation of the movement environment. Our movement time findings are problematic for specificity of learning models of skill acquisition. As well, film data collected in Experiment 2 were not consistent with models that propose a transition from closed-loop to open-loop control.     

SPT效应的编码机制：项目特异性与项目关联性信息

SPT是增强了项目特异性信息还是增强了项目关联性信息一直是SPT效应研究的主题。研究从项目特异性信息和项目关联性信息两个层面综述了SPT效应编码机制的相关研究。在项目特异性信息方面,研究剖析了SPT增强项目特异性信息加工的具体内容、所采取的研究方式以及SPT增强项目特异性加工的原因。在项目关联信息方面,研究分类梳理了情景关联、项目与环境的关联以及类别关联在SPT效应中的作用。未来研究应着手探索SPT能够增强项目特异性加工的深层原因。     

汉语言语产生中词类信息的激活

用图词干扰范式考察汉语言语产生中词类信息的激活.结果表明,无论单个名词命名还是名词短语命名,SOA=-100ms时都出现词类干扰效应,名词干扰条件下图片命名反应时显著长于动词干扰条件下,表明词类信息已经激活.     

Influence of Irrelevant Speech on Standardized Test Performance

The aim of this study was to estimate the impact of distraction on standardized test performance. The distraction investigated here was from fellow examinees who were taking a speaking test. Study participants were volunteers (N = 171) who had previously taken the Graduate Management Admission Test (GMAT), the Graduate Record Examinations (GRE) General Test, or the Test of English as a Foreign Language (TOEFL). They were invited to retake a different form of the same test under either distracting conditions or standard, distraction-free conditions. Test takers expressed strong negative perceptions about the distraction caused by fellow test takers. The impact on actual test performance, however, was slight in the GMAT sample and negligible in both the GRE and TOEFL samples. Moreover, the influence of distraction was no greater than that associated with other common, undesirable influences.     

达标心率对缺血型心肌病和扩张型心肌病患者的影响

为观察达标心率对缺血型心肌病（ICM）和扩张型心肌病（DCM）患者预后的影响,所有入选ICM和DCM患者均给予常规抗心力衰竭药物及β受体阻滞剂（β-b）治疗,使心率维持于55次/分~60次/分,观察随访1年时的病死率、再入院率、舒张末期左室内径（LVEDd）、左室射血分数（LVEF）、氨基末端脑利钠肽前体（NT-proBNP）水平来评估二者的预后。结果显示,随访结束时ICM患者较DCM患者再入院率低（P=0.037）,LVEDd低（P=0.034）,LVEF高（P=0.028）,收缩压高（P=0.029）;对于ICM患者,随访结束时较出院时LVEDd低（P=0.047）,LVEF高（P=0.018）,收缩压高（P=0.042）。因此,心率达标对ICM患者有助于改善预后,对DCM患者改善不明显,ICM患者心率达标时获益更大。     

心理时间旅行的动力机制：自我的作用

选取120名大学生,通过两个研究考察了自我在心理时间旅行中的动力机制。研究1以核心自我评价为评估自我概念的指标,发现自尊和一般自我效能对指向未来的心理时间旅行具有一定的预测效力。研究2通过启动使不同类型的自我概念在意识中占优,发现互倚组比独立组报告出更多具体的事件,且更关注他人和关系。研究表明,自我概念能够引导个体对过去和未来事件的建构。     

语义联系对关联再认神经机制的调节

已有研究显示,关联再认可记录到分别反映双重加工模型的两阶段（即熟悉和回忆）的ERP成分（即FN400和LPC成分）,且具有高语义联系配对的关联再认可通过整合在基于熟悉加工的基础上完成。然而,不同语义联系对关联再认神经机制的影响及单个项目的熟悉和回忆加工的调节作用尚未揭示。为此,本研究比较了主题相关和类别相关图形关联再认的波形波幅异同,并分析了单个项目的熟悉和回忆加工对配对识别的影响。结果显示,主题相关和类别相关条件的旧配对、重组配对和“旧+新”配对均记录到反映熟悉加工的FN400成分,主题相关条件的旧配对、重组配对和“旧+新”配对均记录到反映回忆加工的LPC成分,类别相关条件的旧配对记录到LPC成分。表明关联再认的神经机制受语义联系所调节,单个项目的熟悉程度可影响配对识别时的神经机制,上述结论支持双重加工模型。     

词边界信息在中文词汇学习与识别中的作用:眼动研究的证据

空格作为英语等大多数拼音文字阅读中的词边界信息,能帮助读者成功地从文本的一连串的字母中切分出词,促进了词汇的习得和识别。然而在中文里没有明确的词边界信息,那么提供词边界信息(即加入空格)能否促进中文词汇识别或帮助读者学习新词?本文将从空格对成人、儿童和留学生在阅读中眼动控制的影响来回顾和总结词边界信息在中文词汇识别与学习中的作用。在此基础上,提出对建立汉字与词汇识别模型、眼动控制模型以及对指导汉语教学工作的启示。     

Information underload: Recognition of slowly-presented alphabetic characters

The accuracy of identification of alphabetic letters was examined under three experimental procedures: slowly plotting all of the dots associated with a given display of letters in their correct spatial positions, but in a random temporal order; rapidly plotting one half of the dots associated with a display, and after a variable delay, rapidly plotting the other half of the dots; and rapidly plotting only a fraction of the total number of dots associated with the display. The accuracy of identification suffers as the rate of plotting is decreased and as the interval between the successive fields is increased. Therefore, a failure of spatial-temporal integration is inferred. The results of the separate procedures are partially consistent with an interpretation of a discrete, non-synchronized perceptual moment of 120–150 msec duration, assuming no accumulation of information across successive moments.     

The Learning Signal in Perceptual Tuning of Speech: Bottom Up Versus Top-Down Information

Cognitive systems face a tension between stability and plasticity. The maintenance of long-term representations that reflect the global regularities of the environment is often at odds with pressure to flexibly adjust to short-term input regularities that may deviate from the norm. This tension is abundantly clear in speech communication when talkers with accents or dialects produce input that deviates from a listener's language community norms. Prior research demonstrates that when bottom-up acoustic information or top-down word knowledge is available to disambiguate speech input, there is short-term adaptive plasticity such that subsequent speech perception is shifted even in the absence of the disambiguating information. Although such effects are well-documented, it is not yet known whether bottom-up and top-down resolution of ambiguity may operate through common processes, or how these information sources may interact in guiding the adaptive plasticity of speech perception. The present study investigates the joint contributions of bottom-up information from the acoustic signal and top-down information from lexical knowledge in the adaptive plasticity of speech categorization according to short-term input regularities. The results implicate speech category activation, whether from top-down or bottom-up sources, in driving rapid adjustment of listeners' reliance on acoustic dimensions in speech categorization. Broadly, this pattern of perception is consistent with dynamic mapping of input to category representations that is flexibly tuned according to interactive processing accommodating both lexical knowledge and idiosyncrasies of the acoustic input.