Occipital gamma activation during Vipassana meditation

Long-term Vipassana meditators sat in meditation vs. a control rest (mind-wandering) state for 21 min in a counterbalanced design with spontaneous EEG recorded. Meditation state dynamics were measured with spectral decomposition of the last 6 min of the eyes-closed silent meditation compared to control state. Meditation was associated with a decrease in frontal delta (1–4 Hz) power, especially pronounced in those participants not reporting drowsiness during meditation. Relative increase in frontal theta (4–8 Hz) power was observed during meditation, as well as significantly increased parieto-occipital gamma (35–45 Hz) power, but no other state effects were found for the theta (4–8 Hz), alpha (8–12 Hz), or beta (12–25 Hz) bands. Alpha power was sensitive to condition order, and more experienced meditators exhibited no tendency toward enhanced alpha during meditation relative to the control task. All participants tended to exhibit decreased alpha in association with reported drowsiness. Cross-experimental session occipital gamma power was the greatest in meditators with a daily practice of 10+ years, and the meditation-related gamma power increase was similarly the strongest in such advanced practitioners. The findings suggest that long-term Vipassana meditation contributes to increased occipital gamma power related to long-term meditational expertise and enhanced sensory awareness.     

Attentional processes and meditation

Visual attentional processing was examined in adult meditators and non-meditators on behavioral measures of change blindness, concentration, perspective-shifting, selective attention, and sustained inattentional blindness. Results showed that meditators (1) noticed more changes in flickering scenes and noticed them more quickly, (2) counted more accurately in a challenging concentration task, (3) identified a greater number of alternative perspectives in multiple perspectives images, and (4) showed less interference from invalid cues in a visual selective attention task, but (5) did not differ on a measure of sustained inattentional blindness. Together, results show that regular meditation is associated with more accurate, efficient, and flexible visual attentional processing across diverse tasks that have high face validity outside of the laboratory. Furthermore, effects were assessed in a context separate from actual meditation practice, suggesting that meditators’ better visual attention is not just immediate, but extends to contexts separate from meditation practice.     

冥想的安全性

大量研究表明冥想有助于身心健康的维持与幸福感的提升,但与此同时,飞速发展的研究与实践却严重忽略了对其安全性的考察。目前,我们对冥想各群体(临床人群、修行人、正念冥想指导者、普通练习者及大学生等)不良反应的表现、影响因素及发生与转化机制等都知之甚少,目前国内该领域的研究尚属空白,这是迫切需要研究者和实践者重视和严肃对待的伦理问题。国外研究表明,总体而言,冥想不良反应率为8.3%,表现在认知、感知觉、情感、躯体化、意志、自我意识与社会功能等7方面内容的不适或改变,严重的甚至出现自杀意念与行为;冥想不良反应的影响因素包括练习者、练习、关系及健康行为等4方面的内容。中国文化下本土化研究的开展以及冥想指导者胜任力等问题是未来研究的重要方向,分解设计、纵向设计与个人中心取向是重要的研究方法。     

正念禅修与成瘾行为

在矫正成瘾行为的研究中,正念禅修作为一种更为有益的尝试,受到研究者们日益广泛的关注。正念禅修指个体自觉地将注意力集中于体验其思想、情绪和身体感觉上,并以觉察、接纳和非批判的态度关注于当下体验的训练方式。目前,研究者主要就正念禅修在成瘾行为矫正中的积极作用、渴望与压力在其中所扮演的作用以及从神经机制三方面对其进行阐述,由于当前的研究大多是初步性的,未来可从研究方法学、解释机制和应用研究等方面展开进一步的探究。     

Visual sensitivity and mindfulness meditation

Practitioners of the mindfulness form of Buddhist meditation were tested for visual sensitivity before and immediately after a 3-mo. retreat during which they practiced mindfulness meditation for 16 hr. each day. A control group composed of the staff at the retreat center was similarly tested. Visual sensitivity was defined in two ways: by a detection threshold based on the duration of simple light flashes and a discrimination threshold based on the interval between successive simple light flashes. All light flashes were presented tachistoscopically and were of fixed luminance. After the retreat, practitioners could detect shorter single-light flashes and required a shorter interval to differentiate between successive flashes correctly. The control group did not change on either measure. Phenomenological reports indicate that mindfulness practice enables practitioners to become aware of some of the usually preattentive processes involved in visual detection. The results support the statements found in Buddhist texts on meditation concerning the changes in perception encountered during the practice of mindfulness.     

Consciousness,self-consciousness,and meditation

Many spiritual traditions employ certain mental techniques (meditation) which consist in inhibiting mental activity whilst nonetheless remaining fully conscious, which is supposed to lead to a realisation of one’s own true nature prior to habitual self-substantialisation. In this paper I propose that this practice can be understood as a special means of becoming aware of consciousness itself as such. To explain this claim I conduct some phenomenologically oriented considerations about the nature of consciousness qua presence and the problem of self-presence of this presence.

Attention regulation and monitoring in meditation

Meditation can be conceptualized as a family of complex emotional and attentional regulatory training regimes developed for various ends, including the cultivation of well-being and emotional balance. Among these various practices, there are two styles that are commonly studied. One style, focused attention meditation, entails the voluntary focusing of attention on a chosen object. The other style, open monitoring meditation, involves nonreactive monitoring of the content of experience from moment to moment. The potential regulatory functions of these practices on attention and emotion processes could have a long-term impact on the brain and behavior.     

Duality and nonduality in meditation research

The great variety of meditation techniques found in different contemplative traditions presents a challenge when attempting to create taxonomies based on the constructs of contemporary cognitive sciences. In the current issue of Consciousness and Cognition, Travis and Shear add ‘automatic self-transcending’ to the previously proposed categories of ‘focused attention’ and ‘open monitoring’, and suggest characteristic EEG bands as the defining criteria for each of the three categories. Accuracy of current taxonomies and potential limitations of EEG measurements as classifying criteria are discussed.     

Transcendental meditation and mirror-tracing skill.

Learning, performance and patterns of inter- and intra-individual variability of 32 experienced Transcendental Meditators were compared to those of 32 non-meditators. The data indicated that certain effects attributed to the practice of Transcendental Meditation (such as increased alertness and maintenance of attention, greater consistency and less anxiety) are not manifested in terms of learning and performance of a novel perceptual-motor skill.     

Enhanced happiness and stress alleviation upon insight meditation retreat: mindfulness,a part of traditional Buddhist meditation

This research aims to examine how traditional insight meditation in Thailand is trained and to investigate the impact of this practice on happiness and perceived stress. The fuller meaning of mindfulness and how to interweave mindfulness in daily practice is discussed. The intervention was a seven-day traditional insight meditation retreat in Thailand. The final sample included 656 participants, n?=?330 and 326 in experimental group and control group, respectively. Validated versions of happiness and perceived stress scales for Thai people were used. The magnitude of happiness and stress changes following the intervention, determined by effect sizes were used as a benchmark for interpreting the health status change between baseline and post-test. The effect sizes for happiness and perceived stress were .379 and ?.428 in the meditation group, which is much greater, compared to the effect sizes of ?.045 and ?.003, respectively, in the control group.     

圆悟克勤的禅学与美学思想

宋代时期,禅僧走向士大夫化,从而也使禅宗思想不断向艺术化、审美化方向发展.圆悟克勤开悟的著名公案,这一宗教实践,几乎成了士大夫艺术审美实践.而克勤所论述的人生的自由、解脱与超越的禅学理论,也正是深浸着宗教色彩的审美超越理论.克勤<碧岩录>在体例上,不仅创造了中国传统经学阐释学传统中所没有的一些方法,而且在其性质上体现出体验美学的某些特征.     

Conceptual models and functions of meditation in psychotherapy

Although meditation is increasingly being employed as an adjunct in psychotherapy, there has been practically no comprehensive evaluation of its usefulness in this respect. This paper seeks to address this issue through conceptual models of the meditation experience. It is concluded that meditation practice may be associated with the acquisition of some useful skills (e.g., focused attention), that practice may be physiologically relaxing, that meditation may decrease anxiety, insomnia and drug usage, while enhancing hypnotic induction and self-actualization. There is still no compelling evidence, however, that meditation practice is associated with unique state effects compared with other relaxational procedures. Those who appear to benefit most from meditation appear to be those who present with milder disorders. The clinical value of meditation, therefore, appears to be limited. Furthermore, the long-term objectives of meditation are not in general congruent with those of mainstream psychotherapy, as they go beyond therapeutic gain in the clinical sense.     

Objections and replies within the fifth meditation

Malebranche held that God acts only by general volitions and so is not constantly interfering in the world. The content of God's volitions appears to include the general laws of nature and the particular initial configuration of the created world, so that occasional or natural causes have an important explanatory role. It is clear that at the least Malebranche meant by a ‘general volition’ the willing of events which followed general laws. Steven Nadler argued that this is all we should understand by a ‘general volition’, and so we should think that general volitions are simply particular volitions which follow a general law.

I argue that this view is not the correct interpretation of Malebranche's general volitions, for it does not do justice to the theological doctrine of the Treatise, masks the genuine difference between Arnauld and Malebranche, and conflicts with what Malebranche says about practical volitions. I then argue that despite Malebranche's view of general volitions, there is still an important difference between his view and Leibniz's.     

Loving-kindness meditation increases social connectedness

The need for social connection is a fundamental human motive, and it is increasingly clear that feeling socially connected confers mental and physical health benefits. However, in many cultures, societal changes are leading to growing social distrust and alienation. Can feelings of social connection and positivity toward others be increased? Is it possible to self-generate these feelings? In this study, the authors used a brief loving-kindness meditation exercise to examine whether social connection could be created toward strangers in a controlled laboratory context. Compared with a closely matched control task, even just a few minutes of loving-kindness meditation increased feelings of social connection and positivity toward novel individuals on both explicit and implicit levels. These results suggest that this easily implemented technique may help to increase positive social emotions and decrease social isolation.