集中和分散注意对多感觉整合中听觉主导效应的影响

听觉主导效应是指多感觉通道信息整合过程中,听觉通道中的信息得到优先加工,从而主导其他感觉通道的信息。研究采用经典的声音诱发闪光错觉的范式,通过两个实验操纵了注意资源的分配方式以及实验任务难度,考察了主动注意听觉通道的声音刺激对声音诱发闪光错觉产生的影响,以及任务难度对声音诱发闪光错觉的影响。结果发现:(1)裂变错觉会受到注意资源分配程度的影响,但是融合错觉则不然;(2)任务难度既不会影响裂变错觉,也不会影响融合错觉。说明了分散注意能够影响听觉主导效应中的裂变错觉,并且这种主导效应与任务难度无关。     

身体拥有感错觉对疼痛的影响及其作用机制

身体拥有感错觉以多通道的感官整合为基础,包括视觉-触觉、视觉-本体感觉、触觉-本体感觉、视觉-内感受的整合等。来自实验室急性痛以及慢性痛的大量结果表明拥有感错觉可产生镇痛作用。身体部位尺寸大小、肢体透明度等相关影响因素也逐渐得到揭示。拥有感错觉影响疼痛的机制与身体表征的改变有关,该过程可能涉及“身体网络”与“疼痛网络”间的连接,其中后顶叶皮层可能有重要作用。未来研究应更为深入地探索拥有感错觉范式以考察不同因素对疼痛的影响;在现有多感官整合的范式中重视内感受的作用;考察拥有感错觉改变疼痛的认知神经机制;区分急、慢性痛条件下以及不同慢性痛类型中拥有感错觉对疼痛的不同影响。     

The destruction of time in pathological narcissism

This paper describes the characteristics of subjective time (in contrast to objective time), with particular reference to a specific form of pathological experience and relation to the passage of time in patients with narcissistic personality undergoing psychoanalytic treatment. The clinical manifestations and technical approach to this pathology of time experience are outlined in the context of illustrative clinical vignettes.     

Spatial limits on referred touch to an alien limb may reflect boundaries of visuo-tactile peripersonal space surrounding the hand

In this study, the spatial limits of referred touch to a rubber hand were investigated. Participants rated the strength of the perceived illusion when the rubber hand was placed in one of six different spatial positions (at a distance of 17.5-67.5cm horizontal from the participant's own hand). The results revealed a significant nonlinear relationship in the strength of the illusion, with the strongest ratings given when the two hands were closest; decaying significantly after a distance of 30cm. The time taken to elicit the illusion followed a similar trend. These results may reflect the response properties of bimodal visuo-tactile cells encoding peripersonal space around the hand.     

“旁观者清”还是“旁观者不清”？ ——偏向知觉的非对称性研究

心理学家近年来开始重视人们对社会认知偏向的知觉的研究。文章回顾了心理学对偏向以及对偏向知觉的研究历史,重点介绍了“偏向盲点”与“内省错觉”两种偏向知觉的实验,分析了偏向知觉的相关理论解释,并提出偏向知觉研究是社会知觉研究的一个新领域     

Sustained perceptual invisibility of solid shapes following contour adaptation to partial outlines

Contour adaptation (CA) is a recently described paradigm that renders otherwise salient visual stimuli temporarily perceptually invisible. Here we investigate whether this illusion can be exploited to study visual awareness. We found that CA can induce seconds of sustained invisibility following similarly long periods of uninterrupted adaptation. Furthermore, even fragmented adaptors are capable of producing CA, with the strength of CA increasing monotonically as the adaptors encompass a greater fraction of the stimulus outline. However, different types of adaptor patterns, such as distinctive shapes or illusory contours, produce equivalent levels of CA suggesting that the main determinants of CA are low-level stimulus characteristics, with minimal modulation by higher-order visual processes. Taken together, our results indicate that CA has desirable properties for studying visual awareness, including the production of prolonged periods of perceptual dissociation from stimulation as well as parametric dependencies of that dissociation on a host of stimulus parameters.     

Is there an ‘end of history illusion’ for life satisfaction? Evidence from a three-wave longitudinal study

According to the ‘end of history illusion’ (EOHI) individuals underestimate the amount of future change they will experience. Using results from a three-wave longitudinal study of American adults (N = 2390, mean age = 55.31 years, 56% female), we examined ratings of recollected past (10 years prior), current, and anticipated future (10 years later) life satisfaction at Wave 2, as well as current life satisfaction at Wave 1 (nine years earlier) and at Wave 3 (nine years later). Younger adults typically underestimated their past and overestimate their future LS, whereas older adults tended to underestimate their future LS. Contrary to the EOHI, most individuals either were accurate or anticipated too much change into the future, rather than too little.     

情绪和控制幻觉对投资者羊群行为的影响

本研究采用双因素被试间实验具体考察了特定情绪和控制幻觉对于个体投资者羊群行为的影响,结果发现存在显著的主效应和交互作用。愉悦情绪与投资者的追涨羊群行为呈正向关系,恐惧情绪与跟跌羊群行为呈正向关系;控制幻觉与投资者的追涨羊群行为呈正向关系,与跟跌羊群行为呈负向关系;高控制幻觉的投资者在愉悦情绪下倾向于乐观追涨,而低控制幻觉的投资者在恐惧情绪下倾向于悲观跟跌。     

‘Eppur si move’: The Association Between Electrophysiological and Psychophysical Signatures of Perceived Movement Illusions

Vibration applied to muscle tendons induces an illusory perception of movement by activating spindle receptors and Ia afferent fibers. While neural structures supporting such illusions are quite defined, functional and psychophysical correlates of their perception have not been deeply investigated. The authors aimed at exploring subjective perception of illusory movements thanks to a repeated-stimulation multimodal approach. The integrated analysis of electroencephalography, source data (standardized low-resolution brain electromagnetic tomography–sLORETA), and psychophysical evaluation pointed at the activation of a frontoparietal sensorimotor network, with prefrontal-medial regions mainly involved in supporting the awareness for illusory movements. Further, illusions showed consistency in terms of presence, vividness, and duration. Finally, superior parietal structures seemed to play an important role in self-attribution of agency and ownership during such experiences.     

The second me: Seeing the real body during humanoid robot embodiment produces an illusion of bi-location

Whole-body embodiment studies have shown that synchronized multi-sensory cues can trick a healthy human mind to perceive self-location outside the bodily borders, producing an illusion that resembles an out-of-body experience (OBE). But can a healthy mind also perceive the sense of self in more than one body at the same time? To answer this question, we created a novel artificial reduplication of one’s body using a humanoid robot embodiment system. We first enabled individuals to embody the humanoid robot by providing them with audio-visual feedback and control of the robot head movements and walk, and then explored the self-location and self-identification perceived by them when they observed themselves through the embodied robot. Our results reveal that, when individuals are exposed to the humanoid body reduplication, they experience an illusion that strongly resembles heautoscopy, suggesting that a healthy human mind is able to bi-locate in two different bodies simultaneously.