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1.
Res Sq ; 2024 Mar 28.
Artículo en Inglés | MEDLINE | ID: mdl-38586010

RESUMEN

Emotional appraisals of political stimuli (e.g., videos) have been shown to drive shared neural encoding, which correspond to shared, yet divisive, interpretations of such stimuli. However, mindfulness practice may entrain a form of emotion regulation that de-automatizes social biases, possibly through alteration of such neural mechanisms. The present study combined a naturalistic neuroimaging paradigm and a randomized controlled trial to examine the effects of short-term mindfulness training (MT) (n = 35) vs structurally equivalent Cognitive Reappraisal training (CT) (n = 37) on politically-situated emotions while evaluating the mechanistic role of prefrontal cortical neural synchrony. Participants underwent functional near-infrared spectroscopy (fNIRS) recording while viewing inflammatory partisan news clips and continuously rating their momentary discrete emotions. MT participants were more likely to respond with extreme levels of anger (odds ratio = 0.12, p < .001) and disgust (odds ratio = 0.08, p < .001) relative to CT participants. Neural synchrony-based analyses suggested that participants with extreme emotion reactions exhibited greater prefrontal cortical neural synchrony, but that this pattern was less prominent in participants receiving MT relative to CT (CT > MT; channel 1 ISC = .040, p = .030).

2.
Cogn Affect Behav Neurosci ; 23(6): 1581-1597, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37880570

RESUMEN

Mindfulness can produce neuroplastic changes that support adaptive cognitive and emotional functioning. Recently interest in single-exercise mindfulness instruction has grown considerably because of the advent of mobile health technology. Accordingly, the current study sought to extend neural models of mindfulness by investigating transient states of mindfulness during single-dose exposure to focused attention meditation. Specifically, we examined the ability of a brief mindfulness induction to attenuate intimate partner aggression via adaptive changes to intrinsic functional brain networks. We employed a dual-regression approach to examine a large-scale functional network organization in 50 intimate partner dyads (total n = 100) while they received either mindfulness (n = 50) or relaxation (n = 50) instruction. Mindfulness instruction reduced coherence within the Default Mode Network and increased functional connectivity within the Frontoparietal Control and Salience Networks. Additionally, mindfulness decoupled primary visual and attention-linked networks. Yet, this induction was unable to elicit changes in subsequent intimate partner aggression, and such aggression was broadly unassociated with any of our network indices. These findings suggest that minimal doses of focused attention-based mindfulness can promote transient changes in large-scale brain networks that have uncertain implications for aggressive behavior.


Asunto(s)
Meditación , Atención Plena , Humanos , Encéfalo , Mapeo Encefálico , Meditación/psicología , Agresión , Imagen por Resonancia Magnética
3.
BMC Psychol ; 11(1): 288, 2023 Sep 25.
Artículo en Inglés | MEDLINE | ID: mdl-37749642

RESUMEN

BACKGROUND: Safety precautions and activity restrictions were common in the early, pre-vaccine phases of the COVID-19 pandemic. We hypothesized that higher levels of participation in potentially risky social and other activities would be associated with greater life satisfaction and perceived meaning in life. At the same time, prosocial COVID-preventive activities such as mask wearing should enhance life satisfaction. METHOD: We assessed the impact of COVID-preventive behaviors on psychological well-being in October 2020. A nationally representative sample of U.S. adults (n = 831) completed a demographic questionnaire, a COVID-related behaviors questionnaire, a Cantril's Ladder item, and the Multidimensional Existential Meaning Scale. Two hierarchical linear models were used to examine the potential impact of COVID-preventive behaviors on life satisfaction and meaning in life while accounting for the influence of demographic factors. RESULTS: The study revealed significant positive relationships between COVID-preventive behaviors and subjective well-being. Wearing a mask was significantly associated with higher life satisfaction, while maintaining social distancing of six feet and avoiding large groups were significantly associated with higher perceived meaning in life. Social activities including dining at restaurants and visiting friends and family were also significantly associated with higher life satisfaction and meaning in life, respectively. CONCLUSION: The study's findings support the conclusion that disease prevention measures such as social distancing and mask wearing do not reduce, and may enhance, subjective well-being during a pandemic. Utilizing the unique context of the COVID-19 pandemic to examine relationships between behavior and subjective well-being, the study also indicates that shallow or medium-depth social activities are likely to be more central to life satisfaction, whereas narrower, deeper social interactions with friends and family are more important to perceived meaning in life.


Asunto(s)
COVID-19 , Adulto , Humanos , COVID-19/epidemiología , COVID-19/prevención & control , Pandemias/prevención & control , Conducta Social , Existencialismo , Amigos
4.
Sci Rep ; 12(1): 12260, 2022 07 18.
Artículo en Inglés | MEDLINE | ID: mdl-35851275

RESUMEN

This meta-analysis sought to expand upon neurobiological models of mindfulness through investigation of inherent brain network connectivity outcomes, indexed via resting state functional connectivity (rsFC). We conducted a systematic review and meta-analysis of rsFC as an outcome of mindfulness training (MT) relative to control, with the hypothesis that MT would increase cross-network connectivity between nodes of the Default Mode Network (DMN), Salience Network (SN), and Frontoparietal Control Network (FPCN) as a mechanism of internally-oriented attentional control. Texts were identified from the databases: MEDLINE/PubMed, ERIC, PSYCINFO, ProQuest, Scopus, and Web of Sciences; and were screened for inclusion based on experimental/quasi-experimental trial design and use of mindfulness-based training interventions. RsFC effects were extracted from twelve studies (mindfulness n = 226; control n = 204). Voxel-based meta-analysis revealed significantly greater rsFC (MT > control) between the left middle cingulate (Hedge's g = .234, p = 0.0288, I2 = 15.87), located within the SN, and the posterior cingulate cortex, a focal hub of the DMN. Egger's test for publication bias was nonsignificant, bias = 2.17, p = 0.162. In support of our hypothesis, results suggest that MT targets internetwork (SN-DMN) connectivity implicated in the flexible control of internally-oriented attention.


Asunto(s)
Atención Plena , Encéfalo/diagnóstico por imagen , Mapeo Encefálico/métodos , Red en Modo Predeterminado , Imagen por Resonancia Magnética/métodos , Atención Plena/métodos
5.
Psychophysiology ; 59(7): e14024, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-35182393

RESUMEN

Commonly conducted mindfulness-based trainings such as Mindfulness-based Stress Reduction (MBSR) and Mindfulness-based Cognitive Therapy (MBCT) highlight training in two key forms of meditation: focused attention (FA) and open monitoring (OM). Largely unknown is what each of these mindfulness practices contributes to emotional and other important training outcomes. This dismantling trial compared the effects of structurally equivalent trainings in MBCT, FA, and OM on neural and subjective markers of emotional reactivity and regulation among community adults, with the aim to better understand which forms of training represent active ingredients in mindfulness trainings. Participants with varying levels of depressive symptoms were randomized to one of the three trainings. Before and after each 8-week training, N = 89 participants completed a modified version of the Emotional Reactivity and Regulation Task while electroencephalographic (EEG) and self-reported emotional responses to negative, positive, and neutral photographic images were collected. Examination of EEG-based frontal alpha band asymmetry during passive viewing (reactivity) and active regulation phases of the task showed that FA and MBCT trainings produced significant leftward hemispheric shifts in frontal alpha asymmetry, commonly associated with a shift toward approach-based positive affect. Self-reported emotional responses to negative images corroborated these results, suggesting salutary changes in both emotional reactivity and regulation. OM training had limited beneficial effects, restricted to the subjective outcomes. The findings suggest that MBCT may derive its greatest benefit from training in FA rather than OM. Discussion highlights the potential value of FA training for emotional health.


Asunto(s)
Terapia Cognitivo-Conductual , Meditación , Atención Plena , Adulto , Atención , Terapia Cognitivo-Conductual/métodos , Emociones/fisiología , Humanos , Meditación/métodos , Meditación/psicología , Atención Plena/métodos
6.
Front Psychol ; 12: 730972, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34880805

RESUMEN

Self-related processes (SRPs) have been theorized as key mechanisms of mindfulness-based interventions (MBIs), but the evidence supporting these theories is currently unclear. This evidence map introduces a comprehensive framework for different types of SRPs, and how they are theorized to function as mechanisms of MBIs (target identification). The evidence map then assesses SRP target engagement by mindfulness training and the relationship between target engagement and outcomes (target validation). Discussion of the measurement of SRPs is also included. The most common SRPs measured and engaged by standard MBIs represented valenced evaluations of self-concept, including rumination, self-compassion, self-efficacy, and self-esteem. Rumination showed the strongest evidence as a mechanism for depression, with other physical and mental health outcomes also supported. Self-compassion showed consistent target engagement but was inconsistently related to improved outcomes. Decentering and interoception are emerging potential mechanisms, but their construct validity and different subcomponents are still in development. While some embodied self-specifying processes are being measured in cross-sectional and meditation induction studies, very few have been assessed in MBIs. The SRPs with the strongest mechanistic support represent positive and negative evaluations of self-concept. In sum, few SRPs have been measured in MBIs, and additional research using well-validated measures is needed to clarify their role as mechanisms.

7.
Front Behav Neurosci ; 15: 689373, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34366804

RESUMEN

Reactive aggression, a hostile retaliatory response to perceived threat, has been attributed to failures in emotion regulation. Interventions for reactive aggression have largely focused on cognitive control training, which target top-down emotion regulation mechanisms to inhibit aggressive impulses. Recent theory suggests that mindfulness training (MT) improves emotion regulation via both top-down and bottom-up neural mechanisms and has thus been proposed as an alternative treatment for aggression. Using this framework, the current pilot study examined how MT impacts functional brain physiology in the regulation of reactive aggression. Participants were randomly assigned to 2 weeks of MT (n = 11) or structurally equivalent active coping training (CT) that emphasizes cognitive control (n = 12). Following training, participants underwent functional magnetic resonance imaging (fMRI) during a retaliatory aggression task, a 16-trial game in which participants could respond to provocation by choosing whether or not to retaliate in the next round. Training groups did not differ in levels of aggression displayed. However, participants assigned to MT exhibited enhanced ventromedial prefrontal cortex (vmPFC) recruitment during punishment events (i.e., the aversive consequence of losing) relative to those receiving active CT. Conversely, the active coping group demonstrated greater dorsomedial prefrontal cortex (dmPFC) activation when deciding how much to retaliate, in line with a bolstered top-down behavior monitoring function. The findings suggest that mindfulness and cognitive control training may regulate aggression via different neural circuits and at different temporal stages of the provocation-aggression cycle. Trial Registration: identification no. NCT03485807.

8.
Mindfulness (N Y) ; 12(5): 1041-1062, 2021 May.
Artículo en Inglés | MEDLINE | ID: mdl-34149957

RESUMEN

OBJECTIVES: Mindfulness-based interventions (MBIs) have been widely implemented to improve self-regulation behaviors, often by targeting emotion-related constructs to facilitate change. Yet the degree to which MBIs engage specific measures of emotion-related constructs has not been systematically examined. METHODS: Using advanced meta-analytic techniques, this review examines construct and measurement engagement in trials of adults that used standardized applications of the two most established MBIs: Mindfulness-Based Stress Reduction (MBSR) and Mindfulness-Based Cognitive Therapy (MBCT), or modified variations of these interventions that met defined criteria. RESULTS: Seventy-two studies (N=7,378) were included (MBSR k=47, MBCT k = 21, Modified k=4). MBIs led to significant improvement in emotion-related processing overall, compared to inactive controls (d=0.58; k =36), and in all constructs assessed: depression (d=0.66; k=26), anxiety (d =0.63; k=19), combined mental health (d =0.75; k=7 ) and stress (d =0.44; k=11). Reactions to pain, mood states, emotion regulation, and biological measures lacked sufficient data for analysis. MBIs did not outperform active controls in any analyses. Measurement tool and population-type did not moderate results, but MBI-type did, in that MBCT showed stronger effects than MBSR, although these effects were driven by a small number of studies. CONCLUSIONS: This review is the first to examine the full scope of emotion-related measures relevant to self-regulation, to determine which measures are most influenced by MBCT/MBSR. Compared to extant reviews, which typically focused on MBI outcomes, this work examined mechanistic processes based on measurement domains and tools. While effect sizes were similar among measurement tools, this review also includes a descriptive evaluation of measures and points of caution, providing guidance to MBI researchers and clinicians for selection of emotion-related measurement tools.

9.
PLoS One ; 16(1): e0244838, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33434227

RESUMEN

OBJECTIVE: Mindfulness-based cognitive therapy (MBCT) includes a combination of focused attention (FA) and open monitoring (OM) meditation practices. The aim of this study was to assess both short- and long-term between- and within-group differences in affective disturbance among FA, OM and their combination (MBCT) in the context of a randomized controlled trial. METHOD: One hundred and four participants with mild to severe depression and anxiety were randomized into one of three 8-week interventions: MBCT (n = 32), FA (n = 36) and OM (n = 36). Outcome measures included the Inventory of Depressive Symptomatology (IDS), and the Depression Anxiety Stress Scales (DASS). Mixed effects regression models were used to assess differential treatment effects during treatment, post-treatment (8 weeks) and long-term (20 weeks). The Reliable Change Index (RCI) was used to translate statistical findings into clinically meaningful improvements or deteriorations. RESULTS: All treatments demonstrated medium to large improvements (ds = 0.42-1.65) for almost all outcomes. While all treatments were largely comparable in their effects at post-treatment (week 8), the treatments showed meaningful differences in rapidity of response and pattern of deteriorations. FA showed the fastest rate of improvement and the fewest deteriorations on stress, anxiety and depression during treatment, but a loss of treatment-related gains and lasting deteriorations in depression at week 20. OM showed the slowest rate of improvement and lost treatment-related gains for anxiety, resulting in higher anxiety in OM at week 20 than MBCT (d = 0.40) and FA (d = 0.36), though these differences did not reach statistical significance after correcting for multiple comparisons (p's = .06). MBCT and OM showed deteriorations in stress, anxiety and depression at multiple timepoints during treatment, with lasting deteriorations in stress and depression. MBCT showed the most favorable pattern for long-term treatment of depression. CONCLUSIONS: FA, OM and MBCT show different patterns of response for different dimensions of affective disturbance. TRIAL REGISTRATION: This trial is registered at (v NCT01831362); www.clinicaltrials.gov.


Asunto(s)
Trastornos de Ansiedad/terapia , Terapia Cognitivo-Conductual , Adulto , Trastornos de Ansiedad/patología , Trastorno Depresivo/patología , Trastorno Depresivo/terapia , Femenino , Humanos , Masculino , Persona de Mediana Edad , Atención Plena , Estrés Psicológico , Resultado del Tratamiento
10.
Psychosom Med ; 83(6): 655-664, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33038188

RESUMEN

OBJECTIVE: Out-of-class mindfulness meditation practice is a health behavior that is considered to be a crucial ingredient in mindfulness-based interventions (MBIs), yet participant adherence to practice recommendations is often inconsistent. Furthermore, MBIs may enhance factors that lead to greater adherence to medical regimens in other contexts. This study examined baseline factors previously found to relate to adherence to medical regimen, MBI-related changes in these baseline factors, and treatment-related factors as predictors of meditation adherence in an 8-week MBI. METHODS: Baseline traits (personality, depressive symptoms, and executive function) were entered into regression models (n = 96) to predict intervention and postintervention out-of-class meditation adherence. Trait changes and treatment-related factors were entered into models to predict postintervention meditation adherence. RESULTS: Baseline conscientiousness (ß = 0.33, p = .002), openness (ß = 0.23, p = .019), and depressive symptoms (ß = 0.19, p = .042) predicted intervention meditation adherence, whereas conscientiousness (ß = 0.21, p = .044) and depressive symptoms (ß = 0.22, p = .020) predicted postintervention meditation adherence. Although all trait variables except for agreeableness changed significantly pre-to-post intervention, these changes did not predict postintervention meditation adherence. Retreat attendance (ß = 0.38, p = .029) and instructor/group-related therapeutic factors collectively predicted postintervention meditation adherence (R2 = 0.21, p = .019). CONCLUSIONS: The identified baseline trait factors could be used to increase adherence in these interventions as a method of increasing their effectiveness. An emphasis on the MBI retreat and social factors during the intervention may be important for participant out-of-class practice postintervention.Trial Registration:ClinicalTrials.govNCT01831362.


Asunto(s)
Meditación , Atención Plena , Función Ejecutiva , Humanos , Personalidad
11.
J Sch Psychol ; 68: 163-176, 2018 06.
Artículo en Inglés | MEDLINE | ID: mdl-29861026

RESUMEN

Mindfulness training has been used to improve emotional wellbeing in early adolescents. However, little is known about treatment outcome moderators, or individual differences that may differentially impact responses to treatment. The current study focused on gender as a potential moderator for affective outcomes in response to school-based mindfulness training. Sixth grade students (N = 100) were randomly assigned to either the six weeks of mindfulness meditation or the active control group as part of a history class curriculum. Participants in the mindfulness meditation group completed short mindfulness meditation sessions four to five times per week, in addition to didactic instruction (Asian history). The control group received matched experiential activity in addition to didactic instruction (African history) from the same teacher with no meditation component. Self-reported measures of emotional wellbeing/affect, mindfulness, and self-compassion were obtained at pre and post intervention. Meditators reported greater improvement in emotional wellbeing compared to those in the control group. Importantly, gender differences were detected, such that female meditators reported greater increases in positive affect compared to females in the control group, whereas male meditators and control males displayed equivalent gains. Uniquely among females but not males, increases in self-reported self-compassion were associated with improvements in affect. These findings support the efficacy of school-based mindfulness interventions, and interventions tailored to accommodate distinct developmental needs of female and male adolescents.


Asunto(s)
Meditación/psicología , Atención Plena , Instituciones Académicas , Caracteres Sexuales , Estrés Psicológico/terapia , Estudiantes/psicología , Adolescente , Niño , Emociones/fisiología , Femenino , Humanos , Masculino , Salud Mental , Satisfacción Personal , Estrés Psicológico/psicología
12.
Behav Res Ther ; 101: 92-107, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-29106898

RESUMEN

BACKGROUND: While mindfulness-based interventions (MBIs) employ two distinct practices, focused attention (FA) and open monitoring (OM), the integrated delivery of these practices in MBIs precludes understanding of their practice-specific effects or mechanisms of action. The purpose of this study is to isolate hypothesized active ingredients and practice-specific mechanistic target engagement by creating structurally equivalent interventions that differ only by the active ingredient (meditation practice) offered and to test whether the hypothesized components differentially engage the mechanistic targets that they are purported to engage. METHODS: Participants were intended to be representative of American meditators and had mild to severe affective disturbances. Measures of structural equivalence included participant-level (sample characteristics), treatment-level (program structure and duration, program materials, class size, attendance, homework compliance, etc.), and instructor-level variables (training, ratings and adherence/fidelity). Measures of differential validity included analysis of program materials and verification of differential mechanistic target engagement (cognitive and affective skills and beliefs about meditation acquired by participants after the 8-week training). RESULTS: The results indicate successful creation of structurally equivalent FA and OM programs that were matched on participant-level, treatment-level, and instructor-level variables. The interventions also differed as expected with respect to program materials as well as mechanistic targets engaged (skills and beliefs acquired). CONCLUSIONS: These validated 8-week FA and OM training programs can be applied in future research to assess practice-specific effects of meditation.


Asunto(s)
Síntomas Afectivos/terapia , Control de la Conducta/métodos , Terapia Cognitivo-Conductual/métodos , Atención Plena/métodos , Adulto , Femenino , Humanos , Masculino , Resultado del Tratamiento , Adulto Joven
13.
Front Psychol ; 8: 551, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28473783

RESUMEN

Objectives: While recent literature has shown that mindfulness training has positive effects on treating anxiety and depression, there has been virtually no research investigating whether effects differ across genders-despite the fact that men and women differ in clinically significant ways. The current study investigated whether college-based meditation training had different effects on negative affect for men and women. Methods: Seventy-seven university students (36 women, age = 20.7 ± 3.0 years) participated in 12-week courses with meditation training components. They completed self-report questionnaires of affect, mindfulness, and self-compassion before and after the course. Results: Compared to men, women showed greater decreases in negative affect and greater increases on scales measuring mindfulness and self-compassion. Women's improvements in negative affect were correlated to improvements in measures of both mindfulness skills and self-compassion. In contrast, men showed non-significant increases in negative affect, and changes in affect were only correlated with ability to describe emotions, not any measures of experiential or self-acceptance. Conclusion: These findings suggest that women may have more favorable responses than men to school-based mindfulness training, and that the effectiveness of mindfulness-based interventions may be maximized by gender-specific modifications.

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