Audio-visual speech perception is special

In face-to-face conversation speech is perceived by ear and eye. We studied the prerequisites of audio-visual speech perception by using perceptually ambiguous sine wave replicas of natural speech as auditory stimuli. When the subjects were not aware that the auditory stimuli were speech, they showed only negligible integration of auditory and visual stimuli. When the same subjects learned to perceive the same auditory stimuli as speech, they integrated the auditory and visual stimuli in a similar manner as natural speech. These results demonstrate the existence of a multisensory speech-specific mode of perception.     

Interfacial waves between piezoelectric and piezomagnetic half-spaces with magneto-electro-mechanical imperfect interface

Abstract

We study the propagation of shear horizontal waves between the interface of piezoelectric and piezomagnetic half-spaces with a magneto-electro-mechanical imperfect contact. Mechanical, electrical and magnetical imperfections are modelled by means of a spring, a capacitor and a inductor, respectively. A general expression for the dispersion relation not reported previously in literature is given in an explicit form, with the diverse limit cases analysed in detail. In some of these limit cases, new expressions are also obtained which predict the existence of interfacial waves. In the other cases, when already reported results exist, a comparison with them is done. Some physical interpretations are derived from the limit cases. The influence of mechanical, electrical and magnetical imperfect contacts are shown in some numerical examples.     

Feminism's Third Wave

Summary

“Third wave” feminists, raised in the wake of an established feminist movement as well as a strong anti-feminist backlash, are beginning to define their own feminist agenda. “Third wave” feminists are exploring the contradictions in their lived experience as feminists, and examining the inter section of feminism with their other identities. Young feminists' self-expression has been characterized (by feminists and non-feminists) as “self-obsessed” and “divorced from matters of public purpose” (Bellafante, 1998, p. 57 & 60). In this essay, we provide an alternative view of “third wave” expression, seeing young feminists' honesty in their struggles with various identities as a resurgence of grass roots activism; a return to “the personal.” In this essay, we call for an intergenerational dialogue between second and third wave feminists, and encourage feminist therapists to support and validate young feminists.     

Quantum Mechanics and "Song of Myself": Getting a Grip on Reality

Most recent writing linking science and literature has concerned itself with challenges to the epistemological status of scientific knowledge in an attempt to demonstrate its contingency, arguing in the more radical efforts that the structures of science are no more than useful fictions. This essay also includes an epistemological comparison between science and literature, but instead of making grand or meta–statements about the nature of knowing generally in the two fields, mine is a much narrower aim. My exploration entails two tasks. First, I provide a close–up look at a particular type of experiment, called the delayed–choice experiment, which clearly reveals the strangeness of the quantum world. In connection with this experiment, I discuss wave functions—mathematical expressions used by physicists to describe quantum behavior and predict the outcome of experiments involving quanta. Second, I look at Walt Whitman's “Song of Myself” focusing on the meaning of the “self” in the poem. My aim is to treat the object of study in each field as a “text” and to assert and demonstrate a parallel in the strategies of thought and response between physicists (“readers”) pondering the meaning and status of a wave function and poem readers pondering the meaning and status of the poem's self. In Whitman's “Song” we find an attempt to understand complex aspects of human experience that are said to transcend ordinary reality, an effort for which I believe there are parallels in the attempts of modern physicists to understand complex, nonintuitive aspects of the subatomic world. While not making the kind of broad claims eschewed above, I do suggest that this focused study has interesting implications since both the wave function and the poem's self force their respective sets of “readers” to confront questions of ultimacy—to consider, that is, epistemological and ontological issues of more than passing interest to students of science as well as those of metaphysics and theology.     

积极心理学的繁荣与演变——阴阳辩证哲理的回归

积极心理学是研究人类在适应社会生活中的积极特质、积极主观体验以及实现积极自我和成长的适应性认知和行为的科学。由Seligman(1998)兴起的积极心理学运动经过十年繁荣,在三个研究支柱的基础上增加第四个支柱积极的关系。由于积极心理学拒绝消极作为其中的范畴,Wong(2011)掀起积极心理学第二次浪潮,转向研究积极-消极的共生关系。并且,引用中国哲学思想,把阴阳之间的辩证互动原则作为积极心理学第二次浪潮的基础,研究积极和消极之间的动态平衡,以实现人类美好幸福生活和繁荣。     

Stability and Change in Cognitive Behavior Therapy: Considering the Implications of ACT and RFT

Acceptance and Commitment Therapy (ACT) and Relational Frame Theory (RFT) are part of the new wave of treatments and analyses that seem to be emerging in cognitive behavior therapy. In this article, data in support of these new approaches are provided, and evidence that ACT works through different processes than traditional CBT are presented. The integrative proposals of Ciarrochi and Robb, and Ciarrochi, Robb, and Godsell are then considered. In the long run, whether such integrations are useful is an empirical matter, but concerns are raised about the effects of focusing on the content of beliefs, and the role of logical–empirical challenges to belief. Address correspondence to Steven C. Hayes, Department of Psychology/298, University of Nevada, Reno, NV 89557-0062, USA.     

Sleep EEG changes during adolescence: An index of a fundamental brain reorganization

Delta (1–4 Hz) EEG power in non-rapid eye movement (NREM) sleep declines massively during adolescence. This observation stimulated the hypothesis that during adolescence the human brain undergoes an extensive reorganization driven by synaptic elimination. The parallel declines in synaptic density, delta wave amplitude and cortical metabolic rate during adolescence further support this model. These late brain changes probably represent the final ontogenetic manifestation of nature’s strategy for constructing nervous systems: an initial overproduction of neural elements followed by elimination. Errors in adolescent brain reorganization may cause mental illness; this could explain the typical age of onset of schizophrenia. Longitudinal studies of sleep EEG are enhancing our knowledge of adolescent brain maturation. Our longitudinal study of sleep EEG changes in adolescence showed that delta power, which may reflect frontal cortex maturation, begins its decline between ages 11 and 12 years and falls by 65% by age 17 years. In contrast, NREM theta power begins its decline much earlier. Delta and theta EEG frequencies are important to sleep theory because they behave homeostatically. Surprisingly, these brain changes are unrelated to pubertal maturation but are strongly linked to age. In addition to these (and other) maturational EEG changes, sleep schedules in adolescence change in response to a complex interaction of circadian, social and other influences. Our data demonstrate that the daytime sleepiness that emerges in adolescence is related to the decline in NREM delta as well as to altered sleep schedules. These longitudinal sleep data provide guideposts for studying cognitive and behavioral correlates of adolescent brain reorganization.     

接纳与承诺疗法的理论背景、实证研究与未来发展

接纳与承诺疗法(Acceptance and Commitment Therapy, ACT)于上世纪90年代初由美国治疗师Steven C. Hayes提出。作为基于正念技术的第三代行为治疗理论之一, 该疗法以功能情境主义为哲学基础, 立足于人类认知和语言基本性质的实证研究, 旨在通过平衡接纳与改变来提高心理灵活性。临床研究已证明其在相当广泛的临床问题上都取得了良好效果, 并在与CBT等传统疗法的对比中展现优势。ACT的临床效果和技术细节可做进一步研究, 该疗法与CBT的融合及其在临床领域之外的应用也是未来的研究方向。     

客体工作记忆任务中大脑皮层活动的记忆负荷效应

利用128导事件相关电位技术,采用延迟匹配任务的实验范式,测查了20名正常被试完成不同负荷客体任务时的皮层慢电位（slow cortical potentials,简称sp成分）,实验发现：背侧前额叶在刺激呈现后的700ms到1400ms出现记忆负荷效应,高负荷任务诱发的sp成分显著负于低负荷任务;低负荷任务诱发的sp成分在左前额区（500~1800ms）、左前额-中央区（700~1800ms）、左中央-顶叶区（1000~1400s和1800~4800ms）、右前额区（1800~4800ms）和右前额-中央区（1400~4800ms）显著负于高负荷任务,出现记忆负荷效应,但这种负荷效应在左右大脑半球所反映的心理意义可能不同