Mindfulness meditation practice and executive functioning: Breaking down the benefit

This paper focuses on evidence for mindfulness meditation-related benefits to executive functioning, processes important for much of human volitional behaviour. Miyake et al. (2000) have shown that executive functions can be fractionated into three distinct domains including inhibition, working memory updating, and mental set shifting. Considering these separable domains, it is important to determine whether the effects of mindfulness can generalize to all three sub-functions or are specific to certain domains. To address this, the current review applied Miyake et al.’s (2000) fractionated model of executive functioning to the mindfulness literature. Empirical studies assessing the benefits of mindfulness to measures tapping the inhibition, updating, and shifting components of executive functioning were examined. Results suggest a relatively specific as opposed to general benefit resulting from mindfulness, with consistent inhibitory improvement, but more variable advantages to the updating and shifting domains. Recommendations surrounding application of mindfulness practice and future research are discussed.     

Mindfulness meditation counteracts self-control depletion

Mindfulness meditation describes a set of different mental techniques to train attention and awareness. Trait mindfulness and extended mindfulness interventions can benefit self-control. The present study investigated the short-term consequences of mindfulness meditation under conditions of limited self-control resources. Specifically, we hypothesized that a brief period of mindfulness meditation would counteract the deleterious effect that the exertion of self-control has on subsequent self-control performance. Participants who had been depleted of self-control resources by an emotion suppression task showed decrements in self-control performance as compared to participants who had not suppressed emotions. However, participants who had meditated after emotion suppression performed equally well on the subsequent self-control task as participants who had not exerted self-control previously. This finding suggests that a brief period of mindfulness meditation may serve as a quick and efficient strategy to foster self-control under conditions of low resources.     

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。     

Mindfulness meditation and relaxation training increases time sensitivity

Two experiments examined the effect of mindfulness meditation and relaxation on time perception using a temporal bisection task. In Experiment 1, the participants performed a temporal task before and after exercises of mindfulness meditation or relaxation. In Experiment 2, the procedure was similar than that used in Experiment 1, except that the participants were trained to mediate or relax every day over a period of several weeks. The results showed that mindfulness meditation exercises increased sensitivity to time and lengthened perceived time. However, this temporal improvement with meditation exercises was primarily observed in the experienced meditators. Our results also showed the experienced meditators were less anxious than the novice participants, and that the sensitivity to time increased when the level of anxiety decreased. Our results were explained by the practice of mindfulness technique that had developed individuals’ abilities in devoting more attention resources to temporal information processing.     

Mindfulness meditation and consciousness: An integrative neuroscientific perspective

Although mindfulness meditation has been practiced in the East for more than two millennia, Western scientific research and healthcare programs have only recently drawn their attention to it. Basically, the concept of mindfulness hinges on focusing on one’s own awareness at the present moment. In this review we analyze different hypotheses about the functioning and the cerebral correlates of mindfulness meditation. Since mindfulness is strictly associated with a particular state of consciousness, we also examine some of the most relevant theories that have been proposed as accounts of consciousness. Finally, we suggest that consciousness and mindfulness meditation can be integrated within a neuroscientific perspective, by identifying the brain areas which seem to play an essential role in both, namely the anterior cingulate cortex, posterior cingulate cortex, insula and thalamus.     

Mindfulness meditation and reduced emotional interference on a cognitive task

The effect of mindfulness meditation (MM) on attentional control in emotional contexts was examined. In Study 1, MM practitioners (N = 28) categorized tones presented 1 or 4 s following the onset of affective pictures. Reaction times (RTs) to tones for affective minus neutral pictures provided an index of emotional interference. Participants with more MM experience showed less interference from affective pictures and reported higher mindfulness and psychological well-being. Study 2 was a controlled, randomized experimental study in which participants (N = 82) received MM training, relaxation meditation (RM) training, or no intervention (waiting-list control; WLC). Behavioral, self-report, and psychophysiological measures were administered before and after a 7-week intervention period. Although both MM and RM resulted in smaller skin conductance responses to unpleasant pictures and increased well-being, reductions in emotional interference from unpleasant pictures were specific to MM. These findings indicate that MM attenuates prolonged reactivity to emotional stimuli.

Mindfulness meditation improves cognition: Evidence of brief mental training

Although research has found that long-term mindfulness meditation practice promotes executive functioning and the ability to sustain attention, the effects of brief mindfulness meditation training have not been fully explored. We examined whether brief meditation training affects cognition and mood when compared to an active control group. After four sessions of either meditation training or listening to a recorded book, participants with no prior meditation experience were assessed with measures of mood, verbal fluency, visual coding, and working memory. Both interventions were effective at improving mood but only brief meditation training reduced fatigue, anxiety, and increased mindfulness. Moreover, brief mindfulness training significantly improved visuo-spatial processing, working memory, and executive functioning. Our findings suggest that 4 days of meditation training can enhance the ability to sustain attention; benefits that have previously been reported with long-term meditators.     

Mindfulness meditation is associated with decreases in partner negative affect in daily life

To date, very little research has examined the extrapersonal effects of mindfulness meditation practice. In this study, we investigated whether individual meditation practice exerted an influence on friends or romantic partners. Thirty-five dyads completed an 8-week single-subject protocol using an A-B-A-B design to compare non-meditation phases with meditation phases. One member of each pair was randomly assigned to meditate daily for 15 min during the B-phases of the study; the other dyad member did not meditate in either the A or B phases. Daily diaries for each participant assessed negative affect, positive affect, and facets of mindfulness. For participants in the intermittent meditation condition, meditation was associated with decreased negative affect, increased positive affect, and higher scores on the mindfulness facets of observing, describing, and nonreactivity to inner experience. Results further demonstrated that the negative affect of non-meditating partners decreased during the weeks that their partner meditated and was lower on days that their partner meditated. We did not find similar results for positive affect or mindfulness at the group level. Exploratory analyses suggested that the extrapersonal effects of meditation days on a partner's negative affect might be stronger in romantic couples. This study indicates that 15 min of daily meditation in novice meditators can decrease the negative affect of relationship partners.     

Mindfulness and mind wandering: The protective effects of brief meditation in anxious individuals

Mind wandering can be costly, especially when we are engaged in attentionally demanding tasks. Preliminary studies suggest that mindfulness can be a promising antidote for mind wandering, albeit the evidence is mixed. To better understand the exact impact of mindfulness on mind wandering, we had a sample of highly anxious undergraduate students complete a sustained-attention task during which off-task thoughts including mind wandering were assessed. Participants were randomly assigned to a meditation or control condition, after which the sustained-attention task was repeated. In general, our results indicate that mindfulness training may only have protective effects on mind wandering for anxious individuals. Meditation prevented the increase of mind wandering over time and ameliorated performance disruption during off-task episodes. In addition, we found that the meditation intervention appeared to promote a switch of attentional focus from the internal to present-moment external world, suggesting important implications for treating worrying in anxious populations.     

Context of practice,practice of context: A psychotherapeutic meditation

Intended as an essay on the perennial topic of the relation between theory and practice, which will not be all theory and no practice, this paper draws on contemporary philosphy of science and clinical theory to catalyze the reader's own further reflections on the topic by suggesting that the meanings of theories and practices are context-dependent, and so the question can never be answered in the abstract, and that the separation of theory and practice is something we can do only in theory, never in practice.     

Psychometric scores and meditation practice: A literature review

The relationship between certain personality scores and meditation practice is reviewed. Overall, there is no compelling evidence that practice significantly changes psychometric scores. However, practice does appear to be associated with reported increases in self-actualization and, perhaps, with decreased depression. It is concluded that, although meditation practice may be rewarding in some respects, those who appear to report the most benefit are those who need intervention least in terms of psychological profile. This is because those who maintain practice tend to report relatively low levels of psychological maladjustment.     

Brief body-scan meditation practice improves somatosensory perceptual decision making

We have previously found that attention to internal somatic sensations (interoceptive attention) during a heart beat perception task increases the misperception of external touch on a somatic signal detection task (SSDT), during which healthy participants erroneously report feeling near-threshold vibrations presented to their fingertip in the absence of a stimulus. However, it has been suggested that mindful interoceptive attention should result in more accurate somatic perception, due to its non-evaluative and controlled nature. To investigate this possibility, 62 participants completed the SSDT before and after a period of brief body-scan mindfulness meditation training, or a control intervention (listening to a recorded story). The meditation intervention reduced tactile misperception and increased sensitivity during the SSDT. This finding suggests that the perceptual effects of interoceptive attention depend on its particular nature, and raises the possibility that body-scan meditation could reduce the misperception of physical symptoms in individuals with medically unexplained symptoms.     

The happy face of mindfulness: Mindfulness meditation is associated with perceptions of happiness as rated by outside observers

The last decade has witnessed an enormous increase in research examining the effects of mindfulness meditation. One of the basic assumptions guiding this research is that meditation ultimately makes people happier. In this article, in two studies we tested whether meditators actually look happier. To address this question, outside raters judged the happiness of meditators and non-meditators based on a 15-s video clip of their behaviour. Study 1 demonstrated that novice meditators looked happier after an intensive 9-day meditation retreat (as compared to before the retreat), while Study 2 demonstrated that experienced mindfulness meditators looked happier as compared to controls. The interpersonal implications of these findings are discussed.