Does Location Uncertainty Modulate Unconscious Processing Under Continuous Flash Suppression?

Previous research suggests that selective spatial attention is a determining factor for unconscious processing under continuous flash suppression (CFS), and specifically, that inattention toward stimulus location facilitates its unconscious processing by reducing the depth of CFS (Eo et al., 2016). The aim of our study was to further examine this modulation-by-attention model of CFS using a number priming paradigm. Participants (N = 26) performed a number comparison task on a visible target number (“compare target to five”). Prime-target pairs were either congruent (both smaller or larger than five) or incongruent. Spatial attention toward the primes was varied by manipulating the uncertainty of the primes’ location. Based on the modulation-by-attention model, we hypothesized the following: In trials with uncertain prime location, RTs for congruent prime-target pairs should be faster than for incongruent ones. In trials with certain prime location, RTs for congruent versus incongruent prime-target pairs should not differ. We analyzed our data with sequential Bayes factors (BFs). Our data showed no effect of location uncertainty on unconscious priming under CFS (BF0+ = 5.16). However, even visible primes only weakly influenced RTs. Possible reasons for the absence of robust number priming effects in our study are discussed. Based on exploratory analyses, we conclude that the numerical order of prime and target resulted in a response conflict and interfered with the predicted priming effect.     

Meaning Selection and the Subcortex: Evidence of Reduced Lexical Ambiguity Repetition Effects Following Subcortical Lesions

Recent research indicates that individuals with nonthalamic subcortical (NS) lesions can experience difficulties processing lexical ambiguities in a variety of contexts. This study examined how prior processing of a lexical ambiguity influences subsequent meaning activation in 10 individuals with NS lesions and 10 matched healthy controls. Subjects made speeded lexical decisions on related or unrelated targets following homophone primes. Homophones were repeated with different targets biasing the same or different meanings on the second presentation. The effects of prime-target relatedness, interstimulus interval (200 or 1250 ms), and same vs. different meaning repetition were examined. Both the patient and control groups showed priming when the same homophone meaning was biased on repetition. When a different meaning was biased on the second presentation, no priming was evident in the controls, while facilitation remained present for the NS group, consistent with aberrant meaning selection and deactivation processes. These findings are discussed in terms of age and task-related repetition effects and current conceptions of frontal–subcortical involvement in cognition.David Copland is supported by the Australian Research Council     

Production and recognition bias of stylistic sentences using a story reading task

Four experiments examined participants' ability to produce surface characteristics of sentences using an on-line story reading task. Participants read a series of stories in which either all, or the majority of, sentences were written in the same style, or surface form. Twice per story, participants were asked to fill in a blank consistent with the story. For sentences that contained three stylistic regularities, participants imitated either all three characteristics (Experiment 2) or two of the three characteristics (Experiment 1), depending on the proportion of in-style sentences. Participants demonstrated a recognition bias for the read style in an unannounced recognition task. When participants read stories in which the two styles were the dative/double object alternation, participants demonstrated a syntactic priming effect in the cloze task, but no consistent recognition bias in a later recognition test (Experiments 3 and 4).     

The structure of pigeon multiple-class same-different learning

Three experiments examined the structure of the decision framework used by pigeons in learning a multiple-class same-different task. Using a same-different choice task requiring the discrimination of odd-item different displays (one or more of the display's component elements differed) from same displays (all display components identical), pigeons were concurrently trained with sets of four discriminable display types. In each experiment, the consistent group was tested such that the same and different displays of four display types were consistently mapped onto their choice alternatives. The inconsistent group received a conflicting mapping of the same and different displays and the choice alternatives that differed across the four display types but were consistent within a display type. Experiment 1 tested experienced pigeons, and Experiment 2 tested naive pigeons. In both experiments, the consistent group learned their discrimination faster and to a higher level of choice accuracy than did the inconsistent group, which performed poorly in general. Only in the consistent group was the discrimination transferred to novel stimuli, indicative of concept formation in that group. A third experiment documented that the different display classes were discriminable from one another. These results suggest that pigeons attempt to generate a single discriminative rule when learning this type of task, and that this general rule can cover a large variety of stimulus elements and organizations, consistent with previous evidence suggesting that pigeons may be capable of learning relatively unbounded relational same-different concepts.     

不同阶层心理健康观念及需求状况的调查研究

运用开放式和封闭式问卷调查法 ,对不同阶层共 483人的心理健康观念及心理健康需求状况进行了调查研究。结果表明 :( 1 )不同阶层、不同年龄段的人关于心理健康标准的观念具有显著差异。 ( 2 )人们认为 ,心理健康的人应具有的最典型特征是“处世乐观、热情、诚恳”和“心平气和、与世无争、乐于助人”。 ( 3 )心理不健康的人或心理变态的人所表现的最典型特征是“性格孤僻、与人不合群”和“对生活失去信心、悲观”。 ( 4)虽然不少人认为心理健康与咨询工作者当前最急需开展的工作是“宣传心理健康知识、开展心理卫生服务” ,但只有极少的人能够正视自己的心理健康需求 ,提出自己需要心理健康服务或咨询。     

Meaningful processing of meaningless stimuli: the influence of perceptual experience on early visual processing of faces

The N170 is an event-related potential component associated with extrastriate visual mechanisms involved in detecting human faces and leading to their characteristic structural encoding. Consequently the N170 discriminates the processing of stimuli providing physiognomic information from the processing of other, similarly complex, visual patterns. We have used this effect to explore the top-down influence of newly acquired experience on the initial visual categorization of physiognomic stimuli. Schematic faces having the inner components mislocated did not elicit an N170 effect in naive participants. However, after normally configured versions of the schematic faces were exposed, suggesting what the ambiguous patterns represented, the same patterns elicited an N170 effect as conspicuous as that elicited by regular schematic faces. This priming effect, which changed the visual processing of distorted faces in extrastriate regions, could not be explained by post-perceptual decisions. Although accounts based on changes in focal attention, or within-vision constraints could not be categorically rejected, this outcome might suggest cognitive penetrability of early visual categorization.     

6～14岁儿童对想象物的文字与图画描述

本研究采用开放式问卷法,通过调查810名6-14岁儿童头脑中想象物的文字与图画描述,考察了儿童想象发展的特点。结果发现：(1)儿童对想象物的文字与图画描述可以分划分为3种水平：表象的记忆水平、表象的再造水平和表象创造水平。其中,对想象物的文字描述水平,年龄发展趋势明显,从小学一至二年级之间和四到五年级之间的发展变化最大;而对想象物的图画描述水平,年龄发展趋势不明显。(2)根据儿童对想象物的文字描述和图画描述的发展的匹配程度,可以把儿童的想象发展分为3种类型：文字与图形符号均衡发展型、文字符号型和图形符号型。     

听写困难儿童的整体字形加工特点

听写困难是指儿童能够认读不能听写的现象。本研究以部件启动和整字启动任务中的探测字命名反应时差值,作为整体字形加工水平的指标,间接考察了听写困难儿童的整体字形加工特点。结果发现,听写对照组被试的整体字形加工在呈现时间为75 ms和300 ms时发生,而在150 ms时没有发生;听写困难组被试的整体字形加工仅在75 ms时发生,而在150 ms和300 ms时未发生。两组被试在75 ms时的整体字形加工水平之间没有显著差异。结果表明,听写困难被试仅仅在早期知觉阶段存在整体字形加工,而在词汇加工阶段的整体字形加工缺乏或延迟。     

Content externalism and phenomenal character: a new worry about privileged access

Some philosophers argue that the thesis of content externalism, according to which the contents of a subject’s thoughts are in part individuated by environmental factors, threatens the standard idea that a subject can know the contents of her thoughts without empirical investigation. It is typically assumed, however, that this thesis does not threaten another common idea about privileged access: that a subject can know the phenomenal character of her experience–its “what it’s like” aspect–without empirical investigation. That is, even if content externalism is true and does imply that a subject cannot know without empirical investigation the contents of some of her thoughts (e.g., her thoughts about water), surely she can know without empirical investigation what it’s like for her to be having whatever experience she is having. I argue that if content externalism threatens privileged access to content (I do not discuss whether it does), then it also threatens privileged access to phenomenal character. My argument does not involve claiming that phenomenal character is itself externally individuated. Rather, it depends on two other claims: (1) that introspective access to phenomenal character is conceptual; and (2) that standard arguments for content externalism suggest that some phenomenal concepts are externally individuated.     

浅论肝移植医师的理念和思维

随着医学的进步,在新的医疗形势下,肝移植是对器官移植科医师的巨大挑战,在实际临床工作中,应首先树立正确的器官移植医患关系观,不断提高自己的人文修养和职业素养,进一步完善与肝移植相关的新的知识结构,运用正确的哲学理念和逻辑方式来处理与肝移植相关的临床问题。使肝移植患者得到满意的治疗效果。