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Chhade F, Tabbal J, Paban V, Auffret M, Hassan M, Vérin M. Predicting creative behavior using resting-state electroencephalography. Commun Biol 2024; 7:790. [PMID: 38951602 PMCID: PMC11217288 DOI: 10.1038/s42003-024-06461-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 06/14/2024] [Indexed: 07/03/2024] Open
Abstract
Neuroscience research has shown that specific brain patterns can relate to creativity during multiple tasks but also at rest. Nevertheless, the electrophysiological correlates of a highly creative brain remain largely unexplored. This study aims to uncover resting-state networks related to creative behavior using high-density electroencephalography (HD-EEG) and to test whether the strength of functional connectivity within these networks could predict individual creativity in novel subjects. We acquired resting state HD-EEG data from 90 healthy participants who completed a creative behavior inventory. We then employed connectome-based predictive modeling; a machine-learning technique that predicts behavioral measures from brain connectivity features. Using a support vector regression, our results reveal functional connectivity patterns related to high and low creativity, in the gamma frequency band (30-45 Hz). In leave-one-out cross-validation, the combined model of high and low networks predicts individual creativity with very good accuracy (r = 0.36, p = 0.00045). Furthermore, the model's predictive power is established through external validation on an independent dataset (N = 41), showing a statistically significant correlation between observed and predicted creativity scores (r = 0.35, p = 0.02). These findings reveal large-scale networks that could predict creative behavior at rest, providing a crucial foundation for developing HD-EEG-network-based markers of creativity.
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Affiliation(s)
- Fatima Chhade
- CIC-IT INSERM 1414, Université de Rennes, Rennes, France.
| | - Judie Tabbal
- Institute of Clinical Neurosciences of Rennes (INCR), Rennes, France
- MINDIG, Rennes, France
| | - Véronique Paban
- CRPN, CNRS-UMR 7077, Aix Marseille Université, Marseille, France
| | - Manon Auffret
- CIC-IT INSERM 1414, Université de Rennes, Rennes, France
- France Développement Électronique, Monswiller, France
| | - Mahmoud Hassan
- MINDIG, Rennes, France
- School of Science and Engineering, Reykjavik University, Reykjavik, Iceland
| | - Marc Vérin
- CIC-IT INSERM 1414, Université de Rennes, Rennes, France
- B-CLINE, Laboratoire Interdisciplinaire pour l'Innovation et la Recherche en Santé d'Orléans (LI²RSO), Université d'Orléans, Orléans, France
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2
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Pavlovian-based neurofeedback enhances meta-awareness of mind-wandering. Neural Netw 2023; 158:239-248. [PMID: 36473291 DOI: 10.1016/j.neunet.2022.11.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 10/30/2022] [Accepted: 11/15/2022] [Indexed: 11/22/2022]
Abstract
Absorption in mind-wandering (MW) may worsen our mood and can cause psychological disorders. Researchers indicate the possibility that meta-awareness of MW prevents these mal-effects and enhances favorable consequences of MW, such as boosting creativity; thus, meta-awareness has attracted psychological and clinical attention. However, few studies have investigated the nature of meta-awareness of MW, because there has been no method to isolate and operate this ability. Therefore, we propose a new approach to manipulate the ability of meta-awareness. We used Pavlovian conditioning, tying to it an occurrence of MW and a neutral tone sound inducing the meta-awareness of MW. To perform paired presentations of the unconditioned stimulus (neutral tone) and the conditioned stimulus (perception accompanying MW), we detected participants' natural occurrence of MW via electroencephalogram and a machine-learning estimation method. The double-blinded randomized controlled trial with 37 participants found that a single 20-min conditioning session significantly increased the meta-awareness of MW as assessed by behavioral and neuroscientific measures. The core protocol of the proposed method is real-time feedback on participants' neural information, and in that sense, we can refer to it as neurofeedback. However, there are some differences from typical neurofeedback protocols, and we discuss them in this paper. Our novel classical conditioning is expected to contribute to future research on the modulation effect of meta-awareness on MW.
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3
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Yoshida K, Sawamura D, Yagi M, Nakashima Y, Saito R, Yamamura N, Ogasawara K, Sakai S. Detecting inattentiveness caused by mind-wandering during a driving task: A behavioral study. APPLIED ERGONOMICS 2023; 106:103892. [PMID: 36191405 DOI: 10.1016/j.apergo.2022.103892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 07/24/2022] [Accepted: 08/28/2022] [Indexed: 06/16/2023]
Abstract
This study aims to investigate whether behavioral variability and participants' self-ratings can be used to detect mind-wandering while driving and to examine their effects on braking performance during a driving task. We created a novel driving task and added a sustained attention response task (SART). We examined the effects of mind-wandering on braking performance and whether mind-wandering could be detected from SART response variability. The within-subjects results showed that self-reports of inattentiveness during driving correlated significantly with SART response variability. Multiple regression analysis with brake reaction time as the dependent variable revealed a significant relationship between self-reports of inattentiveness and mind-wandering. However, there were no other consistent linear associations between mind-wandering and SART response variability. Our results not only suggest that inattentiveness to driving caused by mind-wandering impairs braking performance but also emphasize the importance and difficulty of detecting this state from behavioral data alone.
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Affiliation(s)
- Kazuki Yoshida
- Faculty of Health Sciences, Hokkaido University, N12-W5, Kitaku, Sapporo, 060-0812, Japan.
| | - Daisuke Sawamura
- Faculty of Health Sciences, Hokkaido University, N12-W5, Kitaku, Sapporo, 060-0812, Japan
| | - Mikio Yagi
- Panasonic Automotive Systems Co., Ltd., 4261, Ikonobe-cho, Tsuzuki-ku, Yokohama-shi, Kanagawa-ken, 224-8520, Japan
| | - Yu Nakashima
- Panasonic Automotive Systems Co., Ltd., 4261, Ikonobe-cho, Tsuzuki-ku, Yokohama-shi, Kanagawa-ken, 224-8520, Japan
| | - Ryuji Saito
- Graduate School of Health Sciences, Hokkaido University, N12-W5, Kitaku, Sapporo, 060-0812, Japan
| | - Nao Yamamura
- Graduate School of Health Sciences, Hokkaido University, N12-W5, Kitaku, Sapporo, 060-0812, Japan
| | - Katsuhiko Ogasawara
- Faculty of Health Sciences, Hokkaido University, N12-W5, Kitaku, Sapporo, 060-0812, Japan
| | - Shinya Sakai
- Faculty of Health Sciences, Hokkaido University, N12-W5, Kitaku, Sapporo, 060-0812, Japan
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4
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Kam JWY, Rahnuma T, Park YE, Hart CM. Electrophysiological markers of mind wandering: A systematic review. Neuroimage 2022; 258:119372. [PMID: 35700946 DOI: 10.1016/j.neuroimage.2022.119372] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 06/08/2022] [Accepted: 06/10/2022] [Indexed: 10/18/2022] Open
Abstract
The ability to mentally wander away from the external environment is a remarkable feature of the human mind. Although recent years have witnessed a surge of interest in examining mind wandering using EEG, there is no comprehensive review that summarizes and accounts for the variable findings. Accordingly, we conducted a systematic review that synthesizes evidence from EEG studies that examined the electrophysiological measures of mind wandering. Our search yielded 42 studies that met eligibility criteria. The reviewed literature converges on a reduction in the amplitude of canonical ERP components (i.e., P1, N1 and P3) as the most reliable markers of mind wandering. Spectral findings were less robust, but point towards greater activity in lower frequency bands, (i.e., delta, theta, and alpha), as well as a decrease in beta band activity, during mind wandering compared to on-task states. The variability in these findings appears to be modulated by the task context. To integrate these findings, we propose an electrophysiological account of mind wandering that explains how the brain supports this inner experience. Conclusions drawn from this work will inform future endeavours in basic science to map out electrophysiological patterns underlying mind wandering and in translational science using EEG to predict the occurrence of this phenomenon.
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Affiliation(s)
- J W Y Kam
- Department of Psychology, University of Calgary. 2500 University Dr. NW., Calgary, AB, T2N 1N4, Canada; Hotchkiss Brain Institute, University of Calgary. 3330 Hospital Dr. NW., Calgary, AB, T2N 4N1, Canada.
| | - T Rahnuma
- Hotchkiss Brain Institute, University of Calgary. 3330 Hospital Dr. NW., Calgary, AB, T2N 4N1, Canada
| | - Y E Park
- Department of Psychology, University of Calgary. 2500 University Dr. NW., Calgary, AB, T2N 1N4, Canada
| | - C M Hart
- Department of Psychology, University of Calgary. 2500 University Dr. NW., Calgary, AB, T2N 1N4, Canada
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5
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Dong HW, Mills C, Knight RT, Kam JWY. Detection of mind wandering using EEG: Within and across individuals. PLoS One 2021; 16:e0251490. [PMID: 33979407 PMCID: PMC8115801 DOI: 10.1371/journal.pone.0251490] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 04/27/2021] [Indexed: 11/19/2022] Open
Abstract
Mind wandering is often characterized by attention oriented away from an external task towards our internal, self-generated thoughts. This universal phenomenon has been linked to numerous disruptive functional outcomes, including performance errors and negative affect. Despite its prevalence and impact, studies to date have yet to identify robust behavioral signatures, making unobtrusive, yet reliable detection of mind wandering a difficult but important task for future applications. Here we examined whether electrophysiological measures can be used in machine learning models to accurately predict mind wandering states. We recorded scalp EEG from participants as they performed an auditory target detection task and self-reported whether they were on task or mind wandering. We successfully classified attention states both within (person-dependent) and across (person-independent) individuals using event-related potential (ERP) measures. Non-linear and linear machine learning models detected mind wandering above-chance within subjects: support vector machine (AUC = 0.715) and logistic regression (AUC = 0.635). Importantly, these models also generalized across subjects: support vector machine (AUC = 0.613) and logistic regression (AUC = 0.609), suggesting we can reliably predict a given individual's attention state based on ERP patterns observed in the group. This study is the first to demonstrate that machine learning models can generalize to "never-seen-before" individuals using electrophysiological measures, highlighting their potential for real-time prediction of covert attention states.
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Affiliation(s)
- Henry W. Dong
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, California, United States of America
| | - Caitlin Mills
- Department of Psychology, University of New Hampshire, Durham, New Hampshire, United States of America
| | - Robert T. Knight
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, California, United States of America
| | - Julia W. Y. Kam
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, California, United States of America
- Department of Psychology, University of Calgary, Calgary, Alberta, Canada
- Hotchkiss Brain Institute, Calgary, Alberta, Canada
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6
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Usui K, Kawashima I, Tomita N, Takahashi T, Kumano H. Effects of the Attention Training Technique on Brain Activity in Healthy University Students Assessed by EEG Source Imaging. Psychol Rep 2021; 125:862-881. [PMID: 33567979 DOI: 10.1177/0033294120988100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study aimed to investigate the neurocognitive effects of the Attention Training Technique (ATT) on brain activity in healthy participants. The participants included 20 university students who were asked to practice ATT as a homework assignment for 20 days. The intracerebral source localization of their electroencephalogram during rest and the ATT task, which comprised selective attention, attention switching, and divided attention conditions, was evaluated by standardized low-resolution brain electromagnetic tomography. Brain activity during rest was subtracted from that during the ATT task, and that was compared before and after the homework assignment. The results for the divided attention condition indicated significantly decreased alpha 1 frequency band power in the left orbital frontal cortex (OFC) and alpha 2 power in the right inferior temporal cortex. Further, decreased alpha 1 power in the left OFC correlated with reduced subjective difficulty during the divided attention condition. One possibility is that the brain activity changed as the effect of ATT practice, although this study cannot confirm causality. Further studies are required which include a control group that would complete similar training without the ATT task.
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Affiliation(s)
- Kaori Usui
- Graduate School of Human Sciences, Waseda University, Saitama, Japan
| | - Issaku Kawashima
- ATR Brain Information Communication Research Laboratory Group, Kyoto, Japan
| | - Nozomi Tomita
- Faculty of Human Sciences, Waseda University, Saitama, Japan
| | - Toru Takahashi
- Faculty of Human Sciences, Waseda University, Saitama, Japan
| | - Hiroaki Kumano
- Faculty of Human Sciences, Waseda University, Saitama, Japan
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7
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The metronome response task for measuring mind wandering: Replication attempt and extension of three studies by Seli et al. Atten Percept Psychophys 2020; 83:315-330. [PMID: 33000436 DOI: 10.3758/s13414-020-02131-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Science requires replicable tools to measure its intended constructs. Attention research has developed tools that have been used in mind-wandering research, but mind-wandering measures often rely on response-inhibition, which introduces speed-accuracy trade-offs that may conflate errors for mind-wandering. We sought to replicate three studies that used an improved mind-wandering measure: the Metronome Response Task (MRT). In a large (N=300) multisite sample, the primary MRT finding was replicated, showing that continuous rhythmic response time variability reliably predicted self-reported mind-wandering. Our findings also show previously undetected differences between intentional and unintentional mind-wandering. While previously reported mediators (motivation) and moderators (confidence) did not replicate, additional covariates add predictive value and additional constructs (e.g., boredom, effort) demonstrate convergent validity. The MRT is useful for inducing and measuring mind-wandering and provides an especially replicable tool. The MRT's measurement of attention could support future models of the complete cycle of sustained attention.
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Wamsley EJ, Summer T. Spontaneous Entry into an “Offline” State during Wakefulness: A Mechanism of Memory Consolidation? J Cogn Neurosci 2020; 32:1714-1734. [DOI: 10.1162/jocn_a_01587] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Abstract
Moments of inattention to our surroundings may be essential to optimal cognitive functioning. Here, we investigated the hypothesis that humans spontaneously switch between two opposing attentional states during wakefulness—one in which we attend to the external environment (an “online” state) and one in which we disengage from the sensory environment to focus our attention internally (an “offline” state). We created a data-driven model of this proposed alternation between “online” and “offline” attentional states in humans, on a seconds-level timescale. Participants (n = 34) completed a sustained attention to response task while undergoing simultaneous high-density EEG and pupillometry recording and intermittently reporting on their subjective experience. “Online” and “offline” attentional states were initially defined using a cluster analysis applied to multimodal measures of (1) EEG spectral power, (2) pupil diameter, (3) RT, and (4) self-reported subjective experience. We then developed a classifier that labeled trials as belonging to the online or offline cluster with >95% accuracy, without requiring subjective experience data. This allowed us to classify all 5-sec trials in this manner, despite the fact that subjective experience was probed on only a small minority of trials. We report evidence of statistically discriminable “online” and “offline” states matching the hypothesized characteristics. Furthermore, the offline state strongly predicted memory retention for one of two verbal learning tasks encoded immediately prior. Together, these observations suggest that seconds-timescale alternation between online and offline states is a fundamental feature of wakefulness and that this may serve a memory processing function.
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Sharma S, Sasidharan A, Marigowda V, Vijay M, Sharma S, Mukundan CS, Pandit L, Masthi NRR. Indian classical music with incremental variation in tempo and octave promotes better anxiety reduction and controlled mind wandering-A randomised controlled EEG study. Explore (NY) 2020; 17:115-121. [PMID: 32249198 DOI: 10.1016/j.explore.2020.02.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 01/12/2020] [Accepted: 02/20/2020] [Indexed: 11/26/2022]
Abstract
Studies have reported the benefits of music-listening in stress-reduction using musical pieces of specific scale or 'Raaga'. But the influence of lower-level musical properties (like tempo, octave, timbre, etc.) lack research backing. Carnatic music concerts use incremental modulations in tempo and octave (e.g.: 'Ragam-Tanam-Pallavi') to elevate the mood of audiences. Therefore, the current study aimed to examine the anxiolytic effect of this musical property. A randomised controlled cross-over study with 21 male undergraduate medical students was followed. 11 participants listened to 'Varying music' (VM: instrumental music with incremental variations in tempo and octave) and 10 listened to 'Stable music' (SM: instrumental music without such variations), thrice daily for 6 days, both clips recorded in Raaga-Kaapi and silence being the control intervention. Electroencephalography (EEG) and Electrocardiography (for heart rate variability or HRV) were done on all 6 days. Beck's Anxiety inventory and State-trait anxiety scale were administered on Day-1 and Day-6. A significant anxiety score reduction was seen only in VM. VM showed marked decrease in lower frequency EEG power in bilateral temporo-parieto-occipital regions compared to silence, whereas SM showed increase in higher frequencies. Relatively, VM showed more midline power reduction (i.e., lower default mode network or DMN activity) and SM showed greater left-dominant alpha/beta asymmetry (i.e., greater right brain activation). During both music interventions HRV remained stable, unlike silence intervention. We speculate that, gradual transition between lower-slower and higher-faster music portions of VM induces a 'controlled-mind wandering' state involving balanced switching between heightened mind wandering ('attention to self') and reduced mind wandering ('attention to music') states, respectively. Therefore, music-selection has remarkable influence on stress-management and warrants further research.
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Affiliation(s)
- Sushma Sharma
- Kempegowda Institute of Medical Sciences (KIMS), Bengaluru, Karnataka, India
| | - Arun Sasidharan
- Axxonet Brain Research Laboratory (ABRL), Axxonet System Technologies Pvt. Ltd., Bengaluru, Karnataka, India.
| | - Vrinda Marigowda
- Axxonet Brain Research Laboratory (ABRL), Axxonet System Technologies Pvt. Ltd., Bengaluru, Karnataka, India
| | - Mohini Vijay
- Axxonet Brain Research Laboratory (ABRL), Axxonet System Technologies Pvt. Ltd., Bengaluru, Karnataka, India
| | - Sumit Sharma
- Axxonet Brain Research Laboratory (ABRL), Axxonet System Technologies Pvt. Ltd., Bengaluru, Karnataka, India
| | - Chetan Satyajit Mukundan
- Axxonet Brain Research Laboratory (ABRL), Axxonet System Technologies Pvt. Ltd., Bengaluru, Karnataka, India
| | - Lakshmi Pandit
- Kempegowda Institute of Medical Sciences (KIMS), Bengaluru, Karnataka, India
| | - N R Ramesh Masthi
- Kempegowda Institute of Medical Sciences (KIMS), Bengaluru, Karnataka, India
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Iglesias-Parro S, Soriano MF, Prieto M, Rodríguez I, Aznarte JI, Ibáñez-Molina AJ. Introspective and Neurophysiological Measures of Mind Wandering in Schizophrenia. Sci Rep 2020; 10:4833. [PMID: 32179815 PMCID: PMC7076020 DOI: 10.1038/s41598-020-61843-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 03/04/2020] [Indexed: 01/26/2023] Open
Abstract
Patients with schizophrenia have often been considered to be “in their own world”. However, this casual observation has not been proven by scientific evidence so far. This can be explained because scientific research has usually addressed cognition related to the processing of external stimuli, but only recently have efforts been made to explain thoughts, images and feelings not directly related to the external environment. This internally directed cognition has been called mind wandering. In this paper, we have explored mind wandering in schizophrenia under the hypothesis that a predominance of mind wandering would be a core dysfunction in this disorder. To this end, we collected verbal reports and measured electrophysiological signals from patients with schizophrenia spectrum disorders and matched healthy controls while they were presented with segments of films. The results showed that mind wandering was more frequent in patients than in controls. This higher frequency of mind wandering did not correlate with deficits in attentional, memory or executive functioning. In addition, mind wandering in patients was characterized by a different pattern of Electroencephalography (EEG) complexity in patients than in controls, leading to the suggestion that mind wandering in schizophrenia could be of a different nature. These findings could have relevant implications for the conceptualization of this severe mental disorder.
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Affiliation(s)
| | - M F Soriano
- Mental Health Unit, St. Agustín Universitary Hospital, Linares, Jaén, Spain
| | - M Prieto
- Psychology Department, University of Jaén, Jaén, Spain
| | - I Rodríguez
- Psychology Department, University of Jaén, Jaén, Spain
| | - J I Aznarte
- Mental Health Unit, St. Agustín Universitary Hospital, Linares, Jaén, Spain
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Takahashi T, Kikai T, Sugiyama F, Kawashima I, Kuroda A, Usui K, Maeda W, Uchida T, Guan S, Oguchi M, Kumano H. Changes in Mind-Wandering and Cognitive Fusion Through Mindfulness Group Therapy for Depression and Anxiety. J Cogn Psychother 2020. [DOI: 10.1891/jcpsy-d-19-00015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The mechanisms of efficacy in mindfulness-based interventions for depression and anxiety are not fully understood. To clarify these mechanisms, we tested the hypotheses that mind-wandering, daydreaming, cognitive fusion, and experiential avoidance will decrease through mindfulness group therapy, and this decrease will correlate with improvements in depression and anxiety. Participants self-reported depression and/or anxiety (N = 28) took part in an 8-week mindfulness group therapy program. They were assessed using self-report scales at pre- and post-intervention, and at 2-month follow-up. Results indicated that depression and trait-anxiety decreased between pre- and post-intervention with moderate effect sizes, which were maintained at follow-up. Mind-wandering and cognitive fusion also decreased between pre- and post-intervention with small to moderate effect sizes, and maintained at follow-up. The decreases in mind-wandering and cognitive fusion moderately correlated with improvements in depression and anxiety, suggesting that decreases in mind-wandering and cognitive fusion might underlie efficacious mechanisms of mindfulness group therapy.
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12
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Takahashi T, Sugiyama F, Kikai T, Kawashima I, Guan S, Oguchi M, Uchida T, Kumano H. Changes in depression and anxiety through mindfulness group therapy in Japan: the role of mindfulness and self-compassion as possible mediators. Biopsychosoc Med 2019; 13:4. [PMID: 30820241 PMCID: PMC6378713 DOI: 10.1186/s13030-019-0145-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 01/31/2019] [Indexed: 12/22/2022] Open
Abstract
Background Mindfulness-based interventions are increasingly being implemented worldwide for problems with depression and anxiety, and they have shown evidence of efficacy. However, few studies have examined the effects of a mindfulness-based group therapy based on standard programs for depression and anxiety until follow-up in Japan. This study addresses that gap. Furthermore, this study explored the mechanisms of action, focusing on mindfulness, mind wandering, self-compassion, and the behavioral inhibition and behavioral activation systems (BIS/BAS) as possible mediators. Methods We examined 16 people who suffered from depression and/or anxiety in an 8-week mindfulness group therapy. Measurements were conducted using questionnaires on depression and trait-anxiety (outcome variables), mindfulness, mind wandering, self-compassion, and the BIS/BAS (process variables) at pre- and post-intervention and 2-month follow-up. Changes in the outcome and process variables were tested, and the correlations among the changes in those variables were explored. Results Depression and anxiety decreased significantly, with moderate to large effect sizes, from pre- to post-intervention and follow-up. In process variables, the observing and nonreactivity facets of mindfulness significantly increased from pre- to post-intervention and follow-up. The nonjudging facet of mindfulness and self-compassion significantly increased from pre-intervention to follow-up. Other facets of mindfulness, mind wandering, and the BIS/BAS did not significantly change. Improvements in some facets of mindfulness and self-compassion and reductions in BIS were significantly correlated with decreases in depression and anxiety. Conclusions An 8-week mindfulness group therapy program may be effective for people suffering from depression and anxiety in Japan. Mindfulness and self-compassion may be important mediators of the effects of the mindfulness group therapy. Future studies should confirm these findings by using a control group. Trial registration University Hospital Medical Information Network (UMIN CTR) UMIN000022966. Registered July 1, 2016, https://upload.umin.ac.jp/cgi-open-bin/ctr/ctr_view.cgi?recptno=R000026425
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Affiliation(s)
- Toru Takahashi
- 1Graduate School of Human Sciences, Waseda University, 2-579-15, Mikajima, Tokorozawa-shi, Saitama 359-1192 Japan.,2Japan Society for The Promotion of Science, 5-3-1, Kojimachi, Chiyoda-ku, Tokyo 102-0083 Japan
| | - Fukiko Sugiyama
- 3Faculty of Human Studies, Bunkyo Gakuin University, 1196, Kamekubo, Fujimino-shi, Saitama 356-8533 Japan
| | - Tomoki Kikai
- 1Graduate School of Human Sciences, Waseda University, 2-579-15, Mikajima, Tokorozawa-shi, Saitama 359-1192 Japan
| | - Issaku Kawashima
- 4ATR Brain Information Communication Research Laboratory Group, 2-2-2, Hikaridai, Seika-cho, Soraku-gun, Kyoto 619-0288 Japan
| | - Siqing Guan
- 1Graduate School of Human Sciences, Waseda University, 2-579-15, Mikajima, Tokorozawa-shi, Saitama 359-1192 Japan
| | - Mana Oguchi
- 1Graduate School of Human Sciences, Waseda University, 2-579-15, Mikajima, Tokorozawa-shi, Saitama 359-1192 Japan
| | - Taro Uchida
- 5School of Human Sciences, Waseda University, 2-579-15, Mikajima, Tokorozawa-shi, Saitama 359-1192 Japan
| | - Hiroaki Kumano
- 6Faculty of Human Sciences, Waseda University, 2-579-15, Mikajima, Tokorozawa-shi, Saitama 359-1192 Japan
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