电子媒体使用对睡眠的影响,机制及其干预

电子媒体设备日益流行的同时, 睡眠问题也日趋加重, 主客观研究均发现电子媒体使用会对睡眠产生消极影响.背后的加工机制涉及睡眠置换,唤醒,屏幕光和电磁辐射.可以通过睡眠卫生教育,限制电子媒体使用,屏蔽屏幕蓝光等方式进行干预.未来研究需要从理论机制的整合,因果关系的确定,测量方式的客观化和标准化,使用情况细化和本土化研究方面做努力.     

World religion and fake news: A pedagogical response in an age of post‐truth

This article describes a pedagogical response to teaching world religions courses in a post‐truth age. The course assignment and its application, utilized in both online and in‐person formats, bridge student academic pursuits with religious traditions, require students to engage with source‐based journalism, and extend beyond the classroom into many of the contemporary politics encroaching upon the humanities fields. Related to the first, the objective of the assignment is for students to discover that religiosity permeates multiple sectors, both private and public, corresponding with student career paths. As a result, students discover that religion is relevant to their academic pursuits and that they must consider the possibilities of how religion might integrate with their career choices. Regarding the second objective, the assignment develops student digital media literacy skills as a form of civic education that challenges the current political attacks on journalism and factuality. Last, this exercise acknowledges the realities facing many humanities programs across the country and offers this assignment as a way of engaging with those issues within the classroom. See as well, published in this issue of the journal, three short companion essays by Sarah L. Schwarz, Jonathan R. Herman, and Harshita Mruthinti Kamath, each of which analyzes this pedagogical strategy for their particular teaching contexts.     

社会排斥的心理行为特征及其脑机制

社会排斥损害个体基本的归属需要, 对个体的心理和生理会造成严重影响。根据需要威胁时间模型, 社会排斥后的心理和行为特征可以分为三个阶段。社交媒体的发展使社会排斥出现了新的心理和行为特征。近年来功能性磁共振成像研究发现, 突显网络和默认网络等网络中的一些核心脑区都参与了社会排斥各阶段的情绪和认知加工过程。未来研究应以需要威胁时间模型为基础, 以脑网络方法为手段, 探索社会排斥神经机制, 预测排斥后的心理和行为反应模式。     

Unique contribution of semantic representations to immediate memory: an individual-differences approach

Studies have reported dissociations between the contributions of semantic and phonological representations to immediate remembering, found through experimental manipulations as well as specific clinical cases. Also, some studies based on the analysis of individual differences reported that a semantic cued recall task has a variance unshared with the immediate memory tasks which tap the contribution of phonological representations. However, another study suggested that cued recall performance could reflect a wider ability to cluster information by category. Furthermore, no studies of individual differences have investigated the unique semantic contribution in the visual domain. Therefore, the present study used specific immediate recognition memory tasks that have been used to investigate the semantic contribution in the verbal and visual domains. The results demonstrate the unshared variance that reflects the semantic contribution in both the verbal and the visual domain, and some commonality in these variances across the domains.     

Visualising intimacies: The circulation of digital images in the Trinidadian context

This article examines images circulated through mobile media to emphasise the emotion work invested into familial relationships that are defined by place. Drawing on ethnographic fieldwork conducted in Trinidad, the article contributes a cross-cultural perspective to literature in digital visual communication and digital media in family relationships that has typically focused on peer-to-peer relationships between youth or that has focused on nuclear households in predominantly Western contexts. The consequences of uses of digital media platforms are strongly intertwined with the category of relationship (mother and daughter, or couples for example), their cultural inflections, relationship hierarchies and the life-stages of individuals. Digital visual communication functions to navigate, maintain and acknowledge relationships that varies across different platforms. The more public uses of images over Facebook to the more private circulation of images over WhatsApp provide examples that illustrate positive aspects of intimacy through constant contact as well as ambivalent feelings of obligation to reciprocate communication compelled by the availability afforded by mobile media. This article advances the understanding of the relationship between emotions, intimacy and mobile media by revealing how norms, ideals and expectations of familyhood and digital practices that are often essentialised are context-driven and specific.     

Teaching Islam in contemporary America: Digital ethnography and the affective challenges of Islamic studies pedagogy

In this article we address the affective dimensions and challenges of teaching about Islam and Islamic studies in the current American political and cultural environment and make two related arguments. First, we explain how the impact of certain kinds of digital media in the past few years has heightened the association of Islam with violence in the minds of many Americans, leading to a classroom affective environment characterized by the “posttraumatic” experience of knowledge about Islam. Second, we argue that the pedagogical use of digital media as a tool for ethnographic and empathic engagement with individual Muslim lives can help meet this particular teaching challenge. We show how the pedagogical employment of digital ethnography can turn the affective power of digital media into a positive learning tool, and model its responsible social and intellectual use.     

Bistable perception in normal aging: perceptual reversibility and its relation to cognition

The effects of age on the ability to resolve perceptual ambiguity are unknown, though it depends on frontoparietal attentional networks known to change with age. We presented the bistable Necker cube to 24 middle-aged and OAs (older adults; 56–78 years) and 20 YAs (younger adults; 18–24 years) under passive-viewing and volitional control conditions: Hold one cube percept and Switch between cube percepts. During passive viewing, OAs had longer dominance durations (time spent on each percept) than YAs. In the Hold condition, OAs were less able than YAs to increase dominance durations. In the Switch condition, OAs and YAs did not differ in performance. Dominance durations in either condition correlated with performance on tests of executive function mediated by the frontal lobes. Eye movements (fixation deviations) did not differ between groups. These results suggest that OAs’ reduced ability to hold a percept may arise from reduced selective attention. The lack of correlation of performance between Hold and executive-function measures suggests at least a partial segregation of underlying mechanisms.     

同龄效应的类别化-个体化模型

针对面孔认知偏好的类别化-个体化模型,探讨该模型中的知觉经验、加工方式和动机水平对本龄效应的影响。结果表明增加对异龄面孔的知觉经验、个体化加工异龄面孔及提高加工异龄面孔的动机都能有效改善对异龄面孔的再认,减少本龄效应量。这说明本龄效应遵循类别化-个体化模型,且在类别化-个体化模型中本龄效应与本族效应加工原理相仿。。     

Modernity and Postmodernity: The Characteristics of Postmodern Cultural Media

From the academic frontier of modernity and postmodernity,the author aims at exploring the fission between modernity and postmodernity and also the characteristics of postmodern cultural media from a philosophical vantage point.This paper illustrates three aspects of Western modernity:individual modernity,social modernity,and instrumental modernity,and it also clarifies the issues in modernity,starting by explaining three forms of the cultural fission:avant-garde,modernism,and postmodernism.The paper then demonstrates that the rise of postmodernity represents a new transformation and new characteristics of contemporary Westem spirit,namely,the collision and compatibility of various concepts,in which popular culture and high culture,mass culture and elite culture,fashion and games as well as noise and silence have constituted an uncanny landscape of cultural media.This eerie landscape displays the indeterminacy of language,culture,art,consciousness,and aesthetics.From the perspective of theoretical innovation,the author proposes that the postmodem cultural media always displays its commodity and instrumentality,plays and entertainment,anti-culture and anti-art,replication and fabrication logically and practically as an outcome of post-industrial society.In conclusion,three critical issues are addressed:personal spiritual belief,the development of mass culture,and aesthetic principles.The postmodem cultural media has deeply influenced traditional culture,aesthetics,and how they are evaluated,resulting in cultural conflicts and a humanistic dilemma in the world of contemporary capitalism.     

Love and the Paradoxes of Unity: Zhu Xi's Debate with Followers of Cheng Hao over "Perceptual Oneness"

At the end of the twentieth century,there was a trend in Chinese literature towards characterizing Chinese culture as the "unity of Tian (Heaven) and humanity天人合一.” Rather than arguing against such a view,I present in this paper a series of debates over the paradoxes within the concept of unity as well as various notions of love,hoping to demonstrate the depth and complexity of this seemingly simple and dogmatic dictum so that those who cite it can be alert to its potential intricacies.I will discuss three elements which threaten to render the pursuit of oneness an impossible project:(1) the relation between naming and the named,which makes any conceptual attempt to attain oneness an infinite regress,as can be seen in Zhuangzi's莊子 argument against Hui Shi's惠施 oneness;(2) the gap between contemplation and practice,as can be seen in the contrast between Zhang Zai's張載 contemplative oneness and Cheng Hao's程顥 perceptual oneness;and (3) the self-bifurcating attentive acts of the heart-mind,which render any conscious endeavor to attain oneness a self-defeating project.Unlike Cheng Hao's emphasis on the subjective experience of perceptual oneness,his followers posit its underlying metaphysical substance as qi or xing (nature) and believe that moral self-cultivation should start from a metaphysical insight into this substance.Zhu Xi 朱熹 rejects the approach of grounding ethics on metaphysics and argues that love is not based on the notion of unity in terms of qi.He sees the ultimate comprehension of unity rather as a "metaphysical promise," a goal to be attained by following the Confucian Way of selfcultivation,which starts simply from reflection and practice on things near at hand.