我是谁?——人际间多感觉刺激下的识脸错觉

识脸错觉是在人际间同步多感觉刺激下将他人面孔感知为自我面孔的一种主观体验。继Tsakiris报告了识脸错觉现象之后,研究者通过选取不同的刺激呈现方式、不同的被试,重点对被试的主观体验、行为反应两个方面进行了考察,并得到了大量新的研究成果;发现年龄、性别及内部敏感性是影响识脸错觉强度的重要因素,右侧颞顶联合区、顶内沟和枕下回的神经活动与被试主观报告的错觉体验强度相关。未来识脸错觉研究应侧重于研究策略的多样化并为生物特征识别中新模态的选择提供理论支持。此外,同步多感觉刺激技术的开发与应用将会对自我新面孔认同训练具有重要意义。     

Attention and seeing objects: The identity-crowding debate

Can unattended objects by seen? Ned Block has claimed they can on the basis of “identity-crowding.” This paper summarizes the ensuing debate with particular emphasis on the role of unconscious perception. Although unconscious perception plays an important role, it cannot support conscious object-seeing in identity-crowding. Nevertheless, unconscious perception assists in making successful judgments about unseen objects. Further, compelling conceptual evidence against seeing unattended objects places the burden of proof on Block. I argue that countability is necessary for seeing objects and sufficient for attention to them; thus, no unattended objects are seen.     

Modules in spatial vision: intrinsic reasons of their functional attributes

Visual modules can be viewed as expressions of a marked analytic attitude in the study of vision. In vision psychology, this attitude is accompanied by hypotheses that characterize how visual modules are thought to operate in perceptual processes. Our thesis here is that there are what we call “intrinsic reasons” for the presence of such hypotheses in a vision theory, that is, reasons of a deductive kind, which are imposed by the partiality of the basic terms (input and output) in the definition of a module, and by peculiar characteristics of those terms. Specifically, we discuss three hypotheses of functional attributes: successive stages in the action of modules, residual indeterminacy of their effects, and the role of prior constraints. For each of the three, we indicate its occurrence in perceptual psychology, explain corresponding intrinsic reasons, and illustrate such reasons with examples.     

Bi‐ocularity,the functioning mind of the psychoanalyst

With the use of clinical material the author discusses the importance of a ‘bi‐ocular’ mode of attentiveness, one pole of which rests on the psychic process of reverie and the other on ‘analysing’. This is necessary to foster the development of a psychic space in which experiences which were ‘in the shadow’ or unrepresented, can come to the fore and be given shape first pictorially and later ideationally. This requires staying with and fostering the ambiguity of the different times and spaces without collapsing them into the clear, logical and explanatory. It requires the psychoanalyst to make space for that which is ‘other’, other than just apparently here and now, and other than just ‘you and me’, while maintaining the analytic ‘fire’ in a situation in which there is ‘no model in real life’, a place maximally geared to that which is not apparent.     

Identifying when children with visual impairment share attention: A novel protocol and the impact of visual acuity

BackgroundIn Coordinated Joint Engagement (CJE), children acknowledge that they and their social partners are paying attention to the same object. The achievement of CJE, critical for healthy development, is at risk in infants with visual impairment (VI). Research on CJE in these children is limited because investigators use a child’s gaze switch between social partner and object to index CJE. Research is needed that identifies CJE in children with VI using behaviors that do not require normal vision and that explores the relationship between CJE and visual function. This study aimed to (a) develop a protocol for identifying CJE in children with VI, and (b) explore the relationship between CJE and infants’ visual acuity (VA) and contrast sensitivity (CS), measured with Preferential Looking (PL) techniques and Visual Evoked Potential (VEP).MethodsA protocol that included 9 indices of CJE that did not require normal vision was developed to code videos of 20 infants with VI (mean age =1 year, 6 months, 27 days) and their caregivers. The percentage of CJE episodes in which each index was observed was calculated. Inter-coder reliability was measured using Cohen’s Kappa. Linear regression analysis was used to examine the relationship between the infants’ visual function and CJE.ResultsInter-rater reliability between a first coder and each of two second coders were 0.98 and 0.90 for determining whether the child participated in CJE. The following indices were observed the most (in 43–62 % of CJE): child’s body orientation to caregiver, gaze switch between caregiver and object, and vocalization to caregiver. The only significant model included VA (measured with PL) as a single predictor and explained 26.8 % of the variance in CJE.ConclusionsThe novel protocol can be used to identify CJE in children with VI with good inter-coder reliability. The data suggest that children with lower VA exhibited less CJE.     

Bio-inspired computational object classification model for object recognition

Human beings can effortlessly perceive stimuli through their sensory systems to learn, understand, recognize and act on our environment or context. Over the years, efforts have been made to enable cybernetic entities to be close to performing human perception tasks; and in general, to bring artificial intelligence closer to human intelligence.Neuroscience and other cognitive sciences provide evidence and explanations of the functioning of certain aspects of visual perception in the human brain. Visual perception is a complex process, and its has been divided into several parts. Object classification is one of those parts; it is necessary for carrying out the declarative interpretation of the environment. This article deals with the object classification problem.In this article, we propose a computational model of visual classification of objects based on neuroscience, it consists of two modular systems: a visual processing system, in charge of the extraction of characteristics; and a perception sub-system, which performs the classification of objects based on the features extracted by the visual processing system.With the results obtained, a set of aspects are analyzed using similarity and dissimilarity matrices. Also based on the neuroscientific evidence and the results obtained from this research, some aspects are suggested for consideration to improve the work in the future and bring us closer to performing the task of visual classification as humans do.     

The Church in the World: Shifting Notions of Ecclesial Identity among North American Mennonites

Abstract : At mid‐century, Harold S. Bender's “The Anabaptist Vision” provided a definition of sixteenth‐century Anabaptist tradition that clarified the self‐understanding of its contemporary Mennonite heirs and by which their faithfulness to the tradition might be judged. Critics of the vision, such as J. Lawrence Burkholder, sought reformulations of the vision's central tension between separation from and integration into “the world,” calling for greater social responsibility and for a recognition that the ambiguities of human existence extend to the church, of necessity qualifying its lived expressions of radical discipleship.     

Effects of visual information regarding allocentric processing in haptic parallelity matching

Research has revealed that haptic perception of parallelity deviates from physical reality. Large and systematic deviations have been found in haptic parallelity matching most likely due to the influence of the hand-centered egocentric reference frame. Providing information that increases the influence of allocentric processing has been shown to improve performance on haptic matching. In this study allocentric processing was stimulated by providing informative vision in haptic matching tasks that were performed using hand- and arm-centered reference frames.