1 1668 150 NEUROCOGNITIVE CORRELATES OF THE EFFECTS OF YOGA MEDITATION PRACTICE ON EMOTION AND COGNITION: A PILOT STUDY. MINDFULNESS MEDITATION INVOLVES ATTENDING TO EMOTIONS WITHOUT COGNITIVE FIXATION OF EMOTIONAL EXPERIENCE. OVER TIME, THIS PRACTICE IS HELD TO PROMOTE ALTERATIONS IN TRAIT AFFECTIVITY AND ATTENTIONAL CONTROL WITH RESULTANT EFFECTS ON WELL-BEING AND COGNITION. HOWEVER, RELATIVELY LITTLE IS KNOWN REGARDING THE NEURAL SUBSTRATES OF MEDITATION EFFECTS ON EMOTION AND COGNITION. THE PRESENT STUDY INVESTIGATED THE NEUROCOGNITIVE CORRELATES OF EMOTION INTERFERENCE ON COGNITION IN YOGA PRACTITIONERS AND A MATCHED CONTROL GROUP (CG) UNDERWENT FMRI WHILE PERFORMING AN EVENT-RELATED AFFECTIVE STROOP TASK. THE TASK INCLUDES IMAGE VIEWING TRIALS AND STROOP TRIALS BRACKETED BY NEUTRAL OR NEGATIVE EMOTIONAL DISTRACTORS. DURING IMAGE VIEWING TRIALS, YOGA PRACTITIONERS EXHIBITED LESS REACTIVITY IN RIGHT DORSOLATERAL PREFRONTAL CORTEX (DLPFC) TO NEGATIVE AS COMPARED TO NEUTRAL IMAGES; WHEREAS THE CG HAD THE OPPOSITE PATTERN. A MAIN EFFECT OF VALENCE (NEGATIVE > NEUTRAL) WAS OBSERVED IN LIMBIC REGIONS (E.G., AMYGDALA), OF WHICH THE MAGNITUDE WAS INVERSELY RELATED TO DLPFC ACTIVATION. EXPLORATORY ANALYSES REVEALED THAT THE MAGNITUDE OF AMYGDALA ACTIVATION PREDICTED DECREASED SELF-REPORTED POSITIVE AFFECT IN THE CG, BUT NOT AMONG YOGA PRACTITIONERS. DURING STROOP TRIALS, YOGA PRACTITIONERS HAD GREATER ACTIVATION IN VENTROLATERAL PREFRONTAL CORTEX (VLPFC) DURING STROOP TRIALS WHEN NEGATIVE, COMPARED TO NEUTRAL, EMOTIONAL DISTRACTOR WERE PRESENTED; THE CG EXHIBITED THE OPPOSITE PATTERN. TAKEN TOGETHER, THESE DATA SUGGEST THAT THOUGH YOGA PRACTITIONERS EXHIBIT LIMBIC REACTIVITY TO NEGATIVE EMOTIONAL STIMULI, SUCH REACTIVITY DOES NOT HAVE DOWNSTREAM EFFECTS ON LATER MOOD STATE. THIS UNCOUPLING OF VIEWING NEGATIVE EMOTIONAL IMAGES AND AFFECT AMONG YOGA PRACTITIONERS MAY BE OCCASIONED BY THEIR SELECTIVE IMPLEMENTATION OF FRONTAL EXECUTIVE-DEPENDENT STRATEGIES TO REDUCE EMOTIONAL INTERFERENCE DURING COMPETING COGNITIVE DEMANDS AND NOT DURING EMOTIONAL PROCESSING PER SE. 2012 2 1452 42 INFLUENCE OF LONG-TERM SAHAJA YOGA MEDITATION PRACTICE ON EMOTIONAL PROCESSING IN THE BRAIN: AN ERP STUDY. DESPITE GROWING INTEREST IN MEDITATION AS A TOOL FOR ALTERNATIVE THERAPY OF STRESS-RELATED AND PSYCHOSOMATIC DISEASES, BRAIN MECHANISMS OF BENEFICIAL INFLUENCES OF MEDITATION PRACTICE ON HEALTH AND QUALITY OF LIFE ARE STILL UNCLEAR. WE PROPOSE THAT THE KEY POINT IS A PERSISTENT CHANGE IN EMOTIONAL FUNCTIONING, SPECIFICALLY THE MODULATION OF THE EARLY APPRAISAL OF MOTIVATIONAL SIGNIFICANCE OF EVENTS. THE MAIN AIM WAS TO STUDY THE EFFECTS OF LONG-TERM MEDITATION PRACTICE ON EVENT-RELATED BRAIN POTENTIALS (ERPS) DURING AFFECTIVE PICTURE VIEWING. ERPS WERE RECORDED IN 20 LONG-TERM SAHAJA YOGA MEDITATORS AND 20 CONTROL SUBJECTS WITHOUT PRIOR EXPERIENCE IN MEDITATION. THE MEDITATORS' MID-LATENCY (140-400MS) ERPS WERE ATTENUATED FOR BOTH POSITIVE AND NEGATIVE PICTURES (I.E. THERE WERE NO AROUSAL-RELATED INCREASES IN ERP POSITIVITY) AND THIS EFFECT WAS MORE PROMINENT OVER THE RIGHT HEMISPHERE. HOWEVER, WE FOUND NO DIFFERENCES IN THE LONG LATENCY (400-800MS) RESPONSES TO EMOTIONAL IMAGES, ASSOCIATED WITH MEDITATION PRACTICE. IN ADDITION WE FOUND STRONGER ERP NEGATIVITY IN THE TIME WINDOW 200-300MS FOR MEDITATORS COMPARED TO THE CONTROLS, REGARDLESS OF PICTURE VALENCE. WE ASSUME THAT LONG-TERM MEDITATION PRACTICE ENHANCES FRONTAL TOP-DOWN CONTROL OVER FAST AUTOMATIC SALIENCE DETECTION, BASED ON AMYGDALA FUNCTIONS. 2014 3 1286 40 GRAY MATTER AND FUNCTIONAL CONNECTIVITY IN ANTERIOR CINGULATE CORTEX ARE ASSOCIATED WITH THE STATE OF MENTAL SILENCE DURING SAHAJA YOGA MEDITATION. SOME MEDITATION TECHNIQUES TEACH THE PRACTITIONER TO ACHIEVE THE STATE OF MENTAL SILENCE. THE AIM OF THIS STUDY WAS TO INVESTIGATE BRAIN REGIONS THAT ARE ASSOCIATED WITH THEIR VOLUME AND FUNCTIONAL CONNECTIVITY (FC) WITH THE DEPTH OF MENTAL SILENCE IN LONG-TERM PRACTITIONERS OF SAHAJA YOGA MEDITATION. TWENTY-THREE LONG-TERM PRACTITIONERS OF THIS MEDITATION WERE SCANNED USING MAGNETIC RESONANCE IMAGING. IN ORDER TO IDENTIFY THE NEURAL CORRELATES OF THE DEPTH OF MENTAL SILENCE, WE TESTED WHICH GRAY MATTER VOLUMES (GMV) WERE CORRELATED WITH THE DEPTH OF MENTAL SILENCE AND WHICH REGIONS THESE AREAS WERE FUNCTIONALLY CONNECTED TO UNDER A MEDITATION CONDITION. GMV IN MEDIAL PREFRONTAL CORTEX INCLUDING ROSTRAL ANTERIOR CINGULATE CORTEX WERE POSITIVELY CORRELATED WITH THE SUBJECTIVE PERCEPTION OF THE DEPTH OF MENTAL SILENCE INSIDE THE SCANNER. FURTHERMORE, THERE WAS SIGNIFICANTLY INCREASED FC BETWEEN THIS AREA AND BILATERAL ANTERIOR INSULA/PUTAMEN DURING A MEDITATION-STATE SPECIFICALLY, WHILE DECREASED CONNECTIVITY WITH THE RIGHT THALAMUS/PARAHIPPOCAMPAL GYRUS WAS PRESENT DURING THE MEDITATION-STATE AND THE RESTING-STATE. THE CAPACITY OF LONG-TERM MEDITATORS TO ESTABLISH A DURABLE STATE OF MENTAL SILENCE INSIDE AN MRI SCANNER WAS ASSOCIATED WITH LARGER GRAY MATTER VOLUME IN A MEDIAL FRONTAL REGION THAT IS CRUCIAL FOR TOP-DOWN COGNITIVE, EMOTION AND ATTENTION CONTROL. THIS IS FURTHERMORE CORROBORATED BY INCREASED FC OF THIS REGION DURING THE MEDITATION-STATE WITH BILATERAL ANTERIOR INSULA/PUTAMEN, WHICH ARE IMPORTANT FOR INTEROCEPTION, EMOTION, AND ATTENTION REGULATION. THE FINDINGS HENCE SUGGEST THAT THE DEPTH OF MENTAL SILENCE IS ASSOCIATED WITH MEDIAL FRONTO-INSULAR-STRIATAL NETWORKS THAT ARE CRUCIAL FOR TOP-DOWN ATTENTION AND EMOTIONAL CONTROL. 2018 4 1439 32 INCREASED GREY MATTER ASSOCIATED WITH LONG-TERM SAHAJA YOGA MEDITATION: A VOXEL-BASED MORPHOMETRY STUDY. OBJECTIVES: TO INVESTIGATE REGIONAL DIFFERENCES IN GREY MATTER VOLUME ASSOCIATED WITH THE PRACTICE OF SAHAJA YOGA MEDITATION. DESIGN: TWENTY THREE EXPERIENCED PRACTITIONERS OF SAHAJA YOGA MEDITATION AND TWENTY THREE NON-MEDITATORS MATCHED ON AGE, GENDER AND EDUCATION LEVEL, WERE SCANNED USING STRUCTURAL MAGNETIC RESONANCE IMAGING AND THEIR GREY MATTER VOLUME WERE COMPARED USING VOXEL-BASED MORPHOMETRY. RESULTS: GREY MATTER VOLUME WAS LARGER IN MEDITATORS RELATIVE TO NON-MEDITATORS ACROSS THE WHOLE BRAIN. IN ADDITION, GREY MATTER VOLUME WAS LARGER IN SEVERAL PREDOMINANTLY RIGHT HEMISPHERIC REGIONS: IN INSULA, VENTROMEDIAL ORBITOFRONTAL CORTEX, INFERIOR TEMPORAL AND PARIETAL CORTICES AS WELL AS IN LEFT VENTROLATERAL PREFRONTAL CORTEX AND LEFT INSULA. NO AREAS WITH LARGER GREY MATTER VOLUME WERE FOUND IN NON-MEDITATORS RELATIVE TO MEDITATORS. CONCLUSIONS: THE STUDY SHOWS THAT LONG-TERM PRACTICE OF SAHAJA YOGA MEDITATION IS ASSOCIATED WITH LARGER GREY MATTER VOLUME OVERALL, AND WITH REGIONAL ENLARGEMENT IN SEVERAL RIGHT HEMISPHERIC CORTICAL AND SUBCORTICAL BRAIN REGIONS THAT ARE ASSOCIATED WITH SUSTAINED ATTENTION, SELF-CONTROL, COMPASSION AND INTEROCEPTIVE PERCEPTION. THE INCREASED GREY MATTER VOLUME IN THESE ATTENTION AND SELF-CONTROL MEDIATING REGIONS SUGGESTS USE-DEPENDENT ENLARGEMENT WITH REGULAR PRACTICE OF THIS MEDITATION. 2016 5 1641 32 MONITORING THE NEURAL ACTIVITY OF THE STATE OF MENTAL SILENCE WHILE PRACTICING SAHAJA YOGA MEDITATION. OBJECTIVE: TO IDENTIFY THE NEURAL CORRELATES OF THE STATE OF MENTAL SILENCE AS EXPERIENCED THROUGH SAHAJA YOGA MEDITATION. DESIGN: NINETEEN EXPERIENCED MEDITATORS UNDERWENT FUNCTIONAL MAGNETIC RESONANCE IMAGING DURING THREE SHORT CONSECUTIVE MEDITATION PERIODS, CONTRASTED WITH A CONTROL RELAXATION CONDITION. RESULTS: RELATIVE TO BASELINE, AT THE BEGINNING OF THE MEDITATION SESSIONS THERE WAS A SIGNIFICANT INCREASE OF ACTIVATION IN BILATERAL INFERIOR FRONTAL AND TEMPORAL REGIONS. ACTIVATION BECAME PROGRESSIVELY MORE REDUCED WITH DEEPER MEDITATION STAGES AND IN THE LAST MEDITATION SESSION IT BECAME LOCALIZED TO THE RIGHT INFERIOR FRONTAL CORTEX/ RIGHT INSULA AND RIGHT MIDDLE/SUPERIOR TEMPORAL CORTEX. FURTHERMORE, RIGHT INFERIOR FRONTAL ACTIVATION WAS DIRECTLY ASSOCIATED WITH THE SUBJECTIVE DEPTH OF THE MENTAL SILENCE EXPERIENCE. CONCLUSIONS: MEDITATORS APPEAR TO PASS THROUGH AN INITIAL INTENSE NEURAL SELF-CONTROL PROCESS NECESSARY TO SILENCE THEIR MIND. AFTER THIS THEY EXPERIENCE RELATIVELY REDUCED BRAIN ACTIVATION CONCOMITANT WITH THE DEEPENING OF THE STATE OF MENTAL SILENCE OVER RIGHT INFERIOR FRONTAL CORTEX, PROBABLY REFLECTING AN EFFORTLESS PROCESS OF ATTENTIONAL CONTEMPLATION ASSOCIATED WITH THIS STATE. 2015 6 1897 40 RESTING STATE FUNCTIONAL CONNECTIVITY ASSOCIATED WITH SAHAJA YOGA MEDITATION. NEUROSCIENCE RESEARCH HAS SHOWN THAT MEDITATION PRACTICES HAVE EFFECTS ON BRAIN STRUCTURE AND FUNCTION. HOWEVER, FEW STUDIES HAVE COMBINED INFORMATION ON THE EFFECTS ON STRUCTURE AND FUNCTION IN THE SAME SAMPLE. LONG-TERM DAILY MEDITATION PRACTICE PRODUCES REPEATED ACTIVITY OF SPECIFIC BRAIN NETWORKS OVER YEARS OF PRACTICE, WHICH MAY INDUCE LASTING STRUCTURAL AND FUNCTIONAL CONNECTIVITY (FC) CHANGES WITHIN RELEVANT CIRCUITS. THE AIM OF OUR STUDY WAS THEREFORE TO IDENTIFY DIFFERENCES IN FC DURING THE RESTING STATE BETWEEN 23 SAHAJA YOGA MEDITATION EXPERTS AND 23 HEALTHY PARTICIPANTS WITHOUT MEDITATION EXPERIENCE. SEED-BASED FC ANALYSIS WAS PERFORMED DEPARTING FROM VOXELS THAT HAD SHOWN STRUCTURAL DIFFERENCES BETWEEN THESE SAME PARTICIPANTS. THE CONTRAST OF CONNECTIVITY MAPS YIELDED THAT MEDITATORS SHOWED INCREASED FC BETWEEN THE LEFT VENTROLATERAL PREFRONTAL CORTEX AND THE RIGHT DORSOLATERAL PREFRONTAL CORTEX BUT REDUCED FC BETWEEN THE LEFT INSULA AND THE BILATERAL MID-CINGULATE AS WELL AS BETWEEN THE RIGHT ANGULAR GYRUS AND THE BILATERAL PRECUNEUS/CUNEUS CORTICES. IT THUS APPEARS THAT LONG-TERM MEDITATION PRACTICE INCREASES DIRECT FC BETWEEN VENTRAL AND DORSAL FRONTAL REGIONS WITHIN BRAIN NETWORKS RELATED TO ATTENTION AND COGNITIVE CONTROL AND DECREASES FC BETWEEN REGIONS OF THESE NETWORKS AND AREAS OF THE DEFAULT MODE NETWORK. 2021 7 361 32 ASSOCIATIONS BETWEEN ATTENTION, AFFECT AND CARDIAC ACTIVITY IN A SINGLE YOGA SESSION FOR FEMALE CANCER SURVIVORS: AN ENACTIVE NEUROPHENOMENOLOGY-BASED APPROACH. YOGA PRACTICE IS REPORTED TO LEAD TO IMPROVEMENTS IN QUALITY OF LIFE, PSYCHOLOGICAL FUNCTIONING, AND SYMPTOM INDICES IN CANCER SURVIVORS. IMPORTANTLY, MEDITATIVE STATES EXPERIENCED WITHIN YOGA PRACTICE ARE CORRELATED TO NEUROPHYSIOLOGICAL SYSTEMS THAT MODERATE BOTH FOCUS OF ATTENTION AND AFFECTIVE VALENCE. THE CURRENT STUDY USED A MIXED METHODS APPROACH BASED IN NEUROPHENOMENOLOGY TO INVESTIGATE ASSOCIATIONS BETWEEN ATTENTION, AFFECT, AND CARDIAC ACTIVITY DURING A SINGLE YOGA SESSION FOR FEMALE CANCER SURVIVORS. YOGA PRACTICE WAS ASSOCIATED WITH A LINEAR INCREASE IN ASSOCIATIVE ATTENTION AND POSITIVE AFFECTIVE VALENCE, WHILE SHIFTS IN CARDIAC ACTIVITY WERE RELATED TO THE INTENSITY OF EACH YOGA SEQUENCE. CHANGES IN ATTENTION AND AFFECT WERE PREDICTED BY CONCURRENTLY ASSESSED CARDIAC ACTIVITY. AWARENESS OF BREATHING, PHYSICAL MOVEMENT, AND INCREASED RELAXATION WERE REPORTED BY PARTICIPANTS AS POTENTIAL MECHANISMS FOR YOGA'S SALUTARY EFFECTS. WHILE YOGA PRACTICE SHARES COMMONALITIES WITH EXERCISE AND RELAXATION TRAINING, YOGA MAY SERVE PRIMARILY AS A PROMISING MEDITATIVE ATTENTION-AFFECT REGULATION TRAINING METHODOLOGY. 2014 8 2720 50 YOGA MEDITATION PRACTITIONERS EXHIBIT GREATER GRAY MATTER VOLUME AND FEWER REPORTED COGNITIVE FAILURES: RESULTS OF A PRELIMINARY VOXEL-BASED MORPHOMETRIC ANALYSIS. HATHA YOGA TECHNIQUES, INCLUDING PHYSICAL POSTURES (ASANAS), BREATHING EXERCISES (PRANAYAMA), AND MEDITATION, INVOLVE THE PRACTICE OF MINDFULNESS. IN TURN, YOGA MEDITATION PRACTICES MAY INDUCE THE STATE OF MINDFULNESS, WHICH, WHEN EVOKED RECURRENTLY THROUGH REPEATED PRACTICE, MAY ACCRUE INTO TRAIT OR DISPOSITIONAL MINDFULNESS. PUTATIVELY, THESE CHANGES MAY BE MEDIATED BY EXPERIENCE-DEPENDENT NEUROPLASTIC CHANGES. THOUGH PRIOR STUDIES HAVE IDENTIFIED DIFFERENCES IN GRAY MATTER VOLUME (GMV) BETWEEN LONG-TERM MINDFULNESS PRACTITIONERS AND CONTROLS, NO STUDIES TO DATE HAVE REPORTED ON WHETHER YOGA MEDITATION IS ASSOCIATED WITH GMV DIFFERENCES. THE PRESENT STUDY INVESTIGATED GMV DIFFERENCES BETWEEN YOGA MEDITATION PRACTITIONERS (YMP) AND A MATCHED CONTROL GROUP (CG). THE YMP GROUP EXHIBITED GREATER GM VOLUME IN FRONTAL, LIMBIC, TEMPORAL, OCCIPITAL, AND CEREBELLAR REGIONS; WHEREAS THE CG HAD NO GREATER REGIONAL GREATER GMV. IN ADDITION, THE YMP GROUP REPORTED SIGNIFICANTLY FEWER COGNITIVE FAILURES ON THE COGNITIVE FAILURES QUESTIONNAIRE (CFQ), THE MAGNITUDE OF WHICH WAS POSITIVELY CORRELATED WITH GMV IN NUMEROUS REGIONS IDENTIFIED IN THE PRIMARY ANALYSIS. LASTLY, GMV WAS POSITIVELY CORRELATED WITH THE DURATION OF YOGA PRACTICE. RESULTS FROM THIS PRELIMINARY STUDY SUGGEST THAT HATHA YOGA PRACTICE MAY BE ASSOCIATED WITH THE PROMOTION OF NEUROPLASTIC CHANGES IN EXECUTIVE BRAIN SYSTEMS, WHICH MAY CONFER THERAPEUTIC BENEFITS THAT ACCRUE WITH REPEATED PRACTICE. 2012 9 1472 33 INSULAR CORTEX MEDIATES INCREASED PAIN TOLERANCE IN YOGA PRACTITIONERS. YOGA, AN INCREASINGLY POPULAR DISCIPLINE AMONG WESTERNERS, IS FREQUENTLY USED TO IMPROVE PAINFUL CONDITIONS. WE INVESTIGATED POSSIBLE NEUROANATOMICAL UNDERPINNINGS OF THE BENEFICIAL EFFECTS OF YOGA USING SENSORY TESTING AND MAGNETIC RESONANCE IMAGING TECHNIQUES. NORTH AMERICAN YOGIS TOLERATED PAIN MORE THAN TWICE AS LONG AS INDIVIDUALLY MATCHED CONTROLS AND HAD MORE GRAY MATTER (GM) IN MULTIPLE BRAIN REGIONS. ACROSS SUBJECTS, INSULAR GM UNIQUELY CORRELATED WITH PAIN TOLERANCE. INSULAR GM VOLUME IN YOGIS POSITIVELY CORRELATED WITH YOGA EXPERIENCE, SUGGESTING A CAUSAL RELATIONSHIP BETWEEN YOGA AND INSULAR SIZE. YOGIS ALSO HAD INCREASED LEFT INTRAINSULAR WHITE MATTER INTEGRITY, CONSISTENT WITH A STRENGTHENED INSULAR INTEGRATION OF NOCICEPTIVE INPUT AND PARASYMPATHETIC AUTONOMIC REGULATION. YOGIS, AS OPPOSED TO CONTROLS, USED COGNITIVE STRATEGIES INVOLVING PARASYMPATHETIC ACTIVATION AND INTEROCEPTIVE AWARENESS TO TOLERATE PAIN, WHICH COULD HAVE LED TO USE-DEPENDENT HYPERTROPHY OF INSULAR CORTEX. TOGETHER, THESE FINDINGS SUGGEST THAT REGULAR AND LONG-TERM YOGA PRACTICE IMPROVES PAIN TOLERANCE IN TYPICAL NORTH AMERICANS BY TEACHING DIFFERENT WAYS TO DEAL WITH SENSORY INPUTS AND THE POTENTIAL EMOTIONAL REACTIONS ATTACHED TO THOSE INPUTS LEADING TO A CHANGE IN INSULAR BRAIN ANATOMY AND CONNECTIVITY. 2014 10 1670 28 NEUROPROTECTIVE EFFECTS OF YOGA PRACTICE: AGE-, EXPERIENCE-, AND FREQUENCY-DEPENDENT PLASTICITY. YOGA COMBINES POSTURES, BREATHING, AND MEDITATION. DESPITE REPORTED HEALTH BENEFITS, YOGA'S EFFECTS ON THE BRAIN HAVE RECEIVED LITTLE STUDY. WE USED MAGNETIC RESONANCE IMAGING TO COMPARE AGE-RELATED GRAY MATTER (GM) DECLINE IN YOGIS AND CONTROLS. WE ALSO EXAMINED THE EFFECT OF INCREASING YOGA EXPERIENCE AND WEEKLY PRACTICE ON GM VOLUME AND ASSESSED WHICH ASPECTS OF WEEKLY PRACTICE CONTRIBUTED MOST TO BRAIN SIZE. CONTROLS DISPLAYED THE WELL DOCUMENTED AGE-RELATED GLOBAL BRAIN GM DECLINE WHILE YOGIS DID NOT, SUGGESTING THAT YOGA CONTRIBUTES TO PROTECT THE BRAIN AGAINST AGE-RELATED DECLINE. YEARS OF YOGA EXPERIENCE CORRELATED MOSTLY WITH GM VOLUME DIFFERENCES IN THE LEFT HEMISPHERE (INSULA, FRONTAL OPERCULUM, AND ORBITOFRONTAL CORTEX) SUGGESTING THAT YOGA TUNES THE BRAIN TOWARD A PARASYMPATICALLY DRIVEN MODE AND POSITIVE STATES. THE NUMBER OF HOURS OF WEEKLY PRACTICE CORRELATED WITH GM VOLUME IN THE PRIMARY SOMATOSENSORY CORTEX/SUPERIOR PARIETAL LOBULE (S1/SPL), PRECUNEUS/POSTERIOR CINGULATE CORTEX (PCC), HIPPOCAMPUS, AND PRIMARY VISUAL CORTEX (V1). COMMONALITY ANALYSES INDICATED THAT THE COMBINATION OF POSTURES AND MEDITATION CONTRIBUTED THE MOST TO THE SIZE OF THE HIPPOCAMPUS, PRECUNEUS/PCC, AND S1/SPL WHILE THE COMBINATION OF MEDITATION AND BREATHING EXERCISES CONTRIBUTED THE MOST TO V1 VOLUME. YOGA'S POTENTIAL NEUROPROTECTIVE EFFECTS MAY PROVIDE A NEURAL BASIS FOR SOME OF ITS BENEFICIAL EFFECTS. 2015 11 1098 44 EFFECTS OF YOGA RESPIRATORY PRACTICE (BHASTRIKA PRANAYAMA) ON ANXIETY, AFFECT, AND BRAIN FUNCTIONAL CONNECTIVITY AND ACTIVITY: A RANDOMIZED CONTROLLED TRIAL. PRANAYAMA REFERS TO A SET OF YOGA BREATHING EXERCISES. RECENT EVIDENCE SUGGESTS THAT THE PRACTICE OF PRANAYAMA HAS POSITIVE EFFECTS ON MEASURES OF CLINICAL STRESS AND ANXIETY. THIS STUDY EXPLORED THE IMPACT OF A BHASTRIKA PRANAYAMA TRAINING PROGRAM ON EMOTION PROCESSING, ANXIETY, AND AFFECT. WE USED A RANDOMIZED CONTROLLED TRIAL DESIGN WITH THIRTY HEALTHY YOUNG ADULTS ASSESSED AT BASELINE AND AFTER 4 WEEKS OF PRANAYAMA PRACTICES. TWO FUNCTIONAL MAGNETIC RESONANCE IMAGING (MRI) PROTOCOLS WERE USED BOTH AT BASELINE AND POST-INTERVENTION: AN EMOTION TASK AS WELL AS A RESTING-STATE ACQUISITION. OUR RESULTS SUGGEST THAT PRANAYAMA SIGNIFICANTLY DECREASED STATES OF ANXIETY AND NEGATIVE AFFECT. THE PRACTICE OF PRANAYAMA ALSO MODULATED THE ACTIVITY OF BRAIN REGIONS INVOLVED IN EMOTIONAL PROCESSING, PARTICULARLY THE AMYGDALA, ANTERIOR CINGULATE, ANTERIOR INSULA, AND PREFRONTAL CORTEX. RESTING-STATE FUNCTIONAL MRI (FMRI) SHOWED SIGNIFICANTLY REDUCED FUNCTIONAL CONNECTIVITY INVOLVING THE ANTERIOR INSULA AND LATERAL PORTIONS OF THE PREFRONTAL CORTEX. CORRELATION ANALYSIS REVEALED THAT CHANGES IN CONNECTIVITY BETWEEN THE VENTROLATERAL PREFRONTAL CORTEX AND THE RIGHT ANTERIOR INSULA WERE ASSOCIATED WITH CHANGES IN ANXIETY. ALTHOUGH IT SHOULD BE NOTED THAT THESE ANALYSES WERE PRELIMINARY AND EXPLORATORY, IT PROVIDES THE FIRST EVIDENCE THAT 4 WEEKS OF B. PRANAYAMA SIGNIFICANTLY REDUCE THE LEVELS OF ANXIETY AND NEGATIVE AFFECT, AND THAT THESE CHANGES ARE ASSOCIATED WITH THE MODULATION OF ACTIVITY AND CONNECTIVITY IN BRAIN AREAS INVOLVED IN EMOTION PROCESSING, ATTENTION, AND AWARENESS. THE STUDY WAS REGISTERED AT HTTPS://WWW.ENSAIOSCLINICOS.GOV.BR/RG/RBR-2GV5C2/(RBR-2GV5C2). 2020 12 1772 32 POTENTIAL SELF-REGULATORY MECHANISMS OF YOGA FOR PSYCHOLOGICAL HEALTH. RESEARCH SUGGESTING THE BENEFICIAL EFFECTS OF YOGA ON MYRIAD ASPECTS OF PSYCHOLOGICAL HEALTH HAS PROLIFERATED IN RECENT YEARS, YET THERE IS CURRENTLY NO OVERARCHING FRAMEWORK BY WHICH TO UNDERSTAND YOGA'S POTENTIAL BENEFICIAL EFFECTS. HERE WE PROVIDE A THEORETICAL FRAMEWORK AND SYSTEMS-BASED NETWORK MODEL OF YOGA THAT FOCUSES ON INTEGRATION OF TOP-DOWN AND BOTTOM-UP FORMS OF SELF-REGULATION. WE BEGIN BY CONTEXTUALIZING YOGA IN HISTORICAL AND CONTEMPORARY SETTINGS, AND THEN DETAIL HOW SPECIFIC COMPONENTS OF YOGA PRACTICE MAY AFFECT COGNITIVE, EMOTIONAL, BEHAVIORAL, AND AUTONOMIC OUTPUT UNDER STRESS THROUGH AN EMPHASIS ON INTEROCEPTION AND BOTTOM-UP INPUT, RESULTING IN PHYSICAL AND PSYCHOLOGICAL HEALTH. THE MODEL DESCRIBES YOGA PRACTICE AS A COMPREHENSIVE SKILLSET OF SYNERGISTIC PROCESS TOOLS THAT FACILITATE BIDIRECTIONAL FEEDBACK AND INTEGRATION BETWEEN HIGH- AND LOW-LEVEL BRAIN NETWORKS, AND AFFERENT AND RE-AFFERENT INPUT FROM INTEROCEPTIVE PROCESSES (SOMATOSENSORY, VISCEROSENSORY, CHEMOSENSORY). FROM A PREDICTIVE CODING PERSPECTIVE WE PROPOSE A SHIFT TO PERCEPTUAL INFERENCE FOR STRESS MODULATION AND OPTIMAL SELF-REGULATION. WE DESCRIBE HOW THE PROCESSES THAT SUB-SERVE SELF-REGULATION BECOME MORE AUTOMATIZED AND EFFICIENT OVER TIME AND PRACTICE, REQUIRING LESS EFFORT TO INITIATE WHEN NECESSARY AND TERMINATE MORE RAPIDLY WHEN NO LONGER NEEDED. TO SUPPORT OUR PROPOSED MODEL, WE PRESENT THE AVAILABLE EVIDENCE FOR YOGA AFFECTING SELF-REGULATORY PATHWAYS, INTEGRATING EXISTING CONSTRUCTS FROM BEHAVIOR THEORY AND COGNITIVE NEUROSCIENCE WITH EMERGING YOGA AND MEDITATION RESEARCH. THIS PAPER IS INTENDED TO GUIDE FUTURE BASIC AND CLINICAL RESEARCH, SPECIFICALLY TARGETING AREAS OF DEVELOPMENT IN THE TREATMENT OF STRESS-MEDIATED PSYCHOLOGICAL DISORDERS. 2014 13 455 36 CHANGES IN NEURAL CONNECTIVITY AND MEMORY FOLLOWING A YOGA INTERVENTION FOR OLDER ADULTS: A PILOT STUDY. BACKGROUND: NO STUDY HAS EXPLORED THE EFFECT OF YOGA ON COGNITIVE DECLINE AND RESTING-STATE FUNCTIONAL CONNECTIVITY. OBJECTIVES: THIS STUDY EXPLORED THE RELATIONSHIP BETWEEN PERFORMANCE ON MEMORY TESTS AND RESTING-STATE FUNCTIONAL CONNECTIVITY BEFORE AND AFTER A YOGA INTERVENTION VERSUS ACTIVE CONTROL FOR SUBJECTS WITH MILD COGNITIVE IMPAIRMENT (MCI). METHODS: PARTICIPANTS ( >/= 55 Y) WITH MCI WERE RANDOMIZED TO RECEIVE A YOGA INTERVENTION OR ACTIVE "GOLD-STANDARD" CONTROL (I.E., MEMORY ENHANCEMENT TRAINING (MET)) FOR 12 WEEKS. RESTING-STATE FUNCTIONAL MAGNETIC RESONANCE IMAGING WAS USED TO MAP CORRELATIONS BETWEEN BRAIN NETWORKS AND MEMORY PERFORMANCE CHANGES OVER TIME. DEFAULT MODE NETWORKS (DMN), LANGUAGE AND SUPERIOR PARIETAL NETWORKS WERE CHOSEN AS NETWORKS OF INTEREST TO ANALYZE THE ASSOCIATION WITH CHANGES IN VERBAL AND VISUOSPATIAL MEMORY PERFORMANCE. RESULTS: FOURTEEN YOGA AND 11 MET PARTICIPANTS COMPLETED THE STUDY. THE YOGA GROUP DEMONSTRATED A STATISTICALLY SIGNIFICANT IMPROVEMENT IN DEPRESSION AND VISUOSPATIAL MEMORY. WE OBSERVED IMPROVED VERBAL MEMORY PERFORMANCE CORRELATED WITH INCREASED CONNECTIVITY BETWEEN THE DMN AND FRONTAL MEDIAL CORTEX, PREGENUAL ANTERIOR CINGULATE CORTEX, RIGHT MIDDLE FRONTAL CORTEX, POSTERIOR CINGULATE CORTEX, AND LEFT LATERAL OCCIPITAL CORTEX. IMPROVED VERBAL MEMORY PERFORMANCE POSITIVELY CORRELATED WITH INCREASED CONNECTIVITY BETWEEN THE LANGUAGE PROCESSING NETWORK AND THE LEFT INFERIOR FRONTAL GYRUS. IMPROVED VISUOSPATIAL MEMORY PERFORMANCE CORRELATED INVERSELY WITH CONNECTIVITY BETWEEN THE SUPERIOR PARIETAL NETWORK AND THE MEDIAL PARIETAL CORTEX. CONCLUSION: YOGA MAY BE AS EFFECTIVE AS MET IN IMPROVING FUNCTIONAL CONNECTIVITY IN RELATION TO VERBAL MEMORY PERFORMANCE. THESE FINDINGS SHOULD BE CONFIRMED IN LARGER PROSPECTIVE STUDIES. 2016 14 2714 33 YOGA LESSONS FOR CONSCIOUSNESS RESEARCH: A PARALIMBIC NETWORK BALANCING BRAIN RESOURCE ALLOCATION. CONSCIOUSNESS HAS BEEN PROPOSED TO PLAY A KEY ROLE IN SHAPING FLEXIBLE LEARNING AND AS SUCH IS THOUGHT TO CONFER AN EVOLUTIONARY ADVANTAGE. ATTENTION AND AWARENESS ARE THE PERHAPS MOST IMPORTANT UNDERLYING PROCESSES, YET THEIR PRECISE RELATIONSHIP IS PRESENTLY UNCLEAR. BOTH OF THESE PROCESSES MUST, HOWEVER, SERVE THE EVOLUTIONARY IMPERATIVES OF SURVIVAL AND PROCREATION. THEY ARE THUS INTIMATELY BOUND BY REWARD AND EMOTION TO HELP TO PRIORITIZE EFFICIENT BRAIN RESOURCE ALLOCATION IN ORDER TO PREDICT AND OPTIMIZE BEHAVIOR. HERE WE SHOW HOW THIS PROCESS IS SERVED BY A PARALIMBIC NETWORK CONSISTING PRIMARILY OF REGIONS LOCATED ON THE MIDLINE OF THE HUMAN BRAIN. USING MANY DIFFERENT TECHNIQUES, EXPERIMENTS HAVE DEMONSTRATED THAT THIS NETWORK IS EFFECTIVE AND SPECIFIC FOR SELF-AWARENESS AND CONTRIBUTES TO THE SENSE OF UNITY OF CONSCIOUSNESS BY ACTING AS A COMMON NEURAL PATH FOR A WIDE VARIETY OF CONSCIOUS EXPERIENCES. INTERESTINGLY, HEMODYNAMIC ACTIVITY IN THE NETWORK DECREASES WITH FOCUSING ON EXTERNAL STIMULI, WHICH HAS LED TO THE IDEA OF A DEFAULT MODE NETWORK. THIS NETWORK IS ONE OF MANY NETWORKS THAT WAX AND VANE AS RESOURCES ARE ALLOCATED TO ACCOMMODATE THE DIFFERENT CYCLICAL NEEDS OF THE ORGANISM PRIMARILY RELATED TO THE FUNDAMENTAL PLEASURES AFFORDED BY EVOLUTION: FOOD, SEX, AND CONSPECIFICS. HERE WE HYPOTHESIZE, HOWEVER, THAT THE PARALIMBIC NETWORK SERVES A CRUCIAL ROLE IN BALANCING AND REGULATING BRAIN RESOURCE ALLOCATION, AND DISCUSS HOW IT CAN BE THOUGHT OF AS A LINK BETWEEN CURRENT THEORIES OF SO-CALLED "DEFAULT MODE," "RESTING STATE NETWORKS," AND "GLOBAL WORKSPACE." WE SHOW HOW MAJOR DEVELOPMENTAL DISORDERS OF SELF-AWARENESS AND SELF-CONTROL CAN ARISE FROM PROBLEMS IN THE PARALIMBIC NETWORK AS DEMONSTRATED HERE BY THE EXAMPLE OF ASPERGER SYNDROME. WE CONCLUDE THAT ATTENTION, AWARENESS, AND EMOTION ARE INTEGRATED BY A PARALIMBIC NETWORK THAT HELPS TO EFFICIENTLY ALLOCATE BRAIN RESOURCES TO OPTIMIZE BEHAVIOR AND HELP SURVIVAL. 2011 15 1496 35 INTRACEREBRAL PAIN PROCESSING IN A YOGA MASTER WHO CLAIMS NOT TO FEEL PAIN DURING MEDITATION. WE RECORDED MAGNETOENCEPHALOGRAPHY (MEG) AND FUNCTIONAL MAGNETIC RESONANCE IMAGING (FMRI) FOLLOWING NOXIOUS LASER STIMULATION IN A YOGA MASTER WHO CLAIMS NOT TO FEEL PAIN WHEN MEDITATING. AS FOR BACKGROUND MEG ACTIVITY, THE POWER OF ALPHA FREQUENCY BANDS PEAKING AT AROUND 10 HZ WAS MUCH INCREASED DURING MEDITATION OVER OCCIPITAL, PARIETAL AND TEMPORAL REGIONS, WHEN COMPARED WITH THE NON-MEDITATIVE STATE, WHICH MIGHT MEAN THE SUBJECT WAS VERY RELAXED, THOUGH HE DID NOT FALL ASLEEP, DURING MEDITATION. PRIMARY PAIN-RELATED CORTICAL ACTIVITIES RECORDED FROM PRIMARY (SI) AND SECONDARY SOMATOSENSORY CORTICES (SII) BY MEG WERE VERY WEAK OR ABSENT DURING MEDITATION. AS FOR FMRI RECORDING, THERE WERE REMARKABLE CHANGES IN LEVELS OF ACTIVITY IN THE THALAMUS, SII-INSULA (MAINLY THE INSULA) AND CINGULATE CORTEX BETWEEN MEDITATION AND NON-MEDITATION. ACTIVITIES IN ALL THREE REGIONS WERE INCREASED DURING NON-MEDITATION, SIMILAR TO RESULTS IN NORMAL SUBJECTS. IN CONTRAST, ACTIVITIES IN ALL THREE REGIONS WERE WEAKER DURING MEDITATION, AND THE LEVEL WAS LOWER THAN THE BASELINE IN THE THALAMUS. RECENT NEUROIMAGING AND ELECTROPHYSIOLOGICAL STUDIES HAVE CLARIFIED THAT THE EMOTIONAL ASPECT OF PAIN PERCEPTION MAINLY INVOLVES THE INSULA AND CINGULATE CORTEX. THOUGH WE CANNOT CLEARLY EXPLAIN THIS UNUSUAL CONDITION IN THE YOGA MASTER, A CHANGE OF MULTIPLE REGIONS RELATING TO PAIN PERCEPTION COULD BE RESPONSIBLE, SINCE PAIN IS A COMPLEX SENSORY AND EMOTIONAL EXPERIENCE. 2005 16 1972 35 SHORT-TERM SAHAJA YOGA MEDITATION TRAINING MODULATES BRAIN STRUCTURE AND SPONTANEOUS ACTIVITY IN THE EXECUTIVE CONTROL NETWORK. INTRODUCTION: WHILE CROSS-SECTIONAL STUDIES HAVE SHOWN NEURAL CHANGES IN LONG-TERM MEDITATORS, THEY MIGHT BE CONFOUNDED BY SELF-SELECTION AND POTENTIAL BASELINE DIFFERENCES BETWEEN MEDITATORS AND NON MEDITATORS. PROSPECTIVE LONGITUDINAL STUDIES OF THE EFFECTS OF MEDITATION IN NAIVE SUBJECTS ARE MORE CONCLUSIVE WITH RESPECT TO CAUSAL INFERENCES, BUT RELATED EVIDENCE IS SO FAR LIMITED. METHODS: HERE, WE ASSESSED THE EFFECTS OF A 4-WEEK SAHAJA YOGA MEDITATION TRAINING ON GRAY MATTER DENSITY AND SPONTANEOUS RESTING-STATE BRAIN ACTIVITY IN A GROUP OF 12 MEDITATION-NAIVE HEALTHY ADULTS. RESULTS: COMPARED WITH 30 CONTROL SUBJECTS, THE PARTICIPANTS TO MEDITATION TRAINING SHOWED INCREASED GRAY MATTER DENSITY AND CHANGES IN THE COHERENCE OF INTRINSIC BRAIN ACTIVITY IN TWO ADJACENT REGIONS OF THE RIGHT INFERIOR FRONTAL GYRUS ENCOMPASSING THE ANTERIOR COMPONENT OF THE EXECUTIVE CONTROL NETWORK. BOTH THESE MEASURES CORRELATED WITH SELF-REPORTED WELL-BEING SCORES IN THE MEDITATION GROUP. CONCLUSIONS: THE SIGNIFICANT IMPACT OF A BRIEF MEDITATION TRAINING ON BRAIN REGIONS ASSOCIATED WITH ATTENTION, SELF-CONTROL, AND SELF-AWARENESS MAY REFLECT THE ENGAGEMENT OF COGNITIVE CONTROL SKILLS IN SEARCHING FOR A STATE OF MENTAL SILENCE, A DISTINCTIVE FEATURE OF SAHAJA YOGA MEDITATION. THE MANIFOLD IMPLICATIONS OF THESE FINDINGS INVOLVE BOTH MANAGERIAL AND REHABILITATIVE SETTINGS CONCERNED WITH WELL-BEING AND EMOTIONAL STATE IN NORMAL AND PATHOLOGICAL CONDITIONS. 2019 17 1565 31 LOW AND THEN HIGH FREQUENCY OSCILLATIONS OF DISTINCT RIGHT CORTICAL NETWORKS ARE PROGRESSIVELY ENHANCED BY MEDIUM AND LONG TERM SATYANANDA YOGA MEDITATION PRACTICE. MEDITATION PROFICIENCY IS RELATED TO TRAIT-LIKE (LEARNED) EFFECTS ON BRAIN FUNCTION, DEVELOPED OVER TIME. PREVIOUS STUDIES SHOW INCREASES IN EEG POWER IN LOWER FREQUENCY BANDS (THETA, ALPHA) IN EXPERIENCED MEDITATORS IN BOTH MEDITATION STATES AND BASELINE CONDITIONS. HIGHER GAMMA BAND POWER HAS BEEN FOUND IN ADVANCED BUDDHIST MEDITATORS, YET IT IS NOT KNOWN IF THIS OCCURS IN YOGA MEDITATION PRACTICES. THIS STUDY USED ELORETA TO COMPARE DIFFERENCES IN CORTICAL SOURCE ACTIVITY UNDERLYING SCALP EEG FROM INTERMEDIATE (MEAN EXPERIENCE 4 YEARS) AND ADVANCED (MEAN EXPERIENCE 30 YEARS) AUSTRALIAN MEDITATORS FROM THE SATYANANDA YOGA TRADITION DURING A BODY-STEADINESS MEDITATION, MANTRA MEDITATION, AND NON-MEDITATION MENTAL CALCULATION CONDITION. INTERMEDIATE YOGA MEDITATORS SHOWED GREATER SOURCE ACTIVITY IN LOW FREQUENCIES (PARTICULARLY THETA AND ALPHA1) DURING MENTAL CALCULATION, BODY-STEADINESS AND MANTRA MEDITATION. A SIMILAR SPATIAL PATTERN OF SIGNIFICANT DIFFERENCES WAS FOUND IN ALL CONDITIONS BUT THE NUMBER OF SIGNIFICANT VOXELS WAS DOUBLE DURING BODY-STEADINESS AND MANTRA MEDITATION THAN IN THE NON-MEDITATION (CALCULATION) CONDITION. THESE DIFFERENCES WERE GREATEST IN RIGHT (R) SUPERIOR FRONTAL AND R PRECENTRAL GYRI AND EXTENDED BACK TO INCLUDE THE R PARIETAL AND OCCIPITAL LOBES. ADVANCED YOGA MEDITATORS SHOWED GREATER ACTIVITY IN HIGH FREQUENCIES (BETA AND ESPECIALLY GAMMA) IN ALL CONDITIONS BUT GREATLY EXPANDED DURING MEDITATION PRACTICE. ACROSS ALL CONDITIONS (MEDITATION AND NON-MEDITATION) DIFFERENCES WERE GREATEST IN THE SAME REGIONS: R INSULA, R INFERIOR FRONTAL GYRUS AND R ANTERIOR TEMPORAL LOBE. DISTINCT R CORE NETWORKS WERE IDENTIFIED IN ALPHA1 (8-10 HZ) AND GAMMA (25-42 HZ) BANDS, RESPECTIVELY. THE VOXELS RECRUITED TO THESE NETWORKS GREATLY EXPANDED DURING MEDITATION PRACTICE TO INCLUDE HOMOLOGOUS REGIONS OF THE LEFT HEMISPHERE. FUNCTIONAL INTERPRETATION PARALLELS TRADITIONALLY DESCRIBED STAGES OF DEVELOPMENT IN YOGA PROFICIENCY. 2014 18 1191 29 EVOLUTION FROM FOUR MENTAL STATES TO THE HIGHEST STATE OF CONSCIOUSNESS: A NEUROPHYSIOLOGICAL BASIS OF MEDITATION AS DEFINED IN YOGA TEXTS. THIS CHAPTER PROVIDES A THEORETICAL INTRODUCTION TO STATES OF CONSCIOUSNESS AND REVIEWS NEUROSCIENTIFIC INVESTIGATIONS OF MEDITATION. THE DIFFERENT STATES OF CONSCIOUSNESS CONSIST OF FOUR MENTAL STATES, I.E., CANCALATA (RANDOM THINKING), EKAGRATA (NON-MEDITATIVE FOCUSING), DHARNA (FOCUSED MEDITATION), AND DHYANA (MEDITATION) AS DEFINED IN YOGA TEXTS. MEDITATION IS A SELF-REGULATED MENTAL PROCESS ASSOCIATED WITH DEEP RELAXATION AND INCREASED INTERNALIZED ATTENTION. SCIENTIFIC INVESTIGATIONS ON MEDITATION REPORTED CHANGES IN ELECTROPHYSIOLOGICAL SIGNALS AND NEUROIMAGING MEASURES. BUT MOST OUTCOMES OF MEDITATION STUDIES SHOWED INCONSISTENT RESULTS, THIS MAY BE DUE TO HETEROGENEITY IN MEDITATION METHODS AND TECHNIQUES EVOLVED IN THE LAST 200 YEARS. TRADITIONALLY, THE FEATURES OF MEDITATION INCLUDE THE CAPACITY TO SUSTAIN A HEIGHTENED AWARENESS OF THOUGHTS, BEHAVIORS, EMOTIONS, AND PERCEPTIONS. GENERALLY, MEDITATION INVOLVES NON-REACTIVE EFFORTLESS MONITORING OF THE CONTENT OF EXPERIENCE FROM MOMENT TO MOMENT. FOCUSED MEDITATION PRACTICE INVOLVES AWARENESS ON A SINGLE OBJECT AND OPEN MONITORING MEDITATION IS A NON-DIRECTIVE MEDITATION INVOLVED ATTENTION IN BREATHING, MANTRA, OR SOUND. THEREFORE, RESULTS OF FEW EMPIRICAL STUDIES OF ADVANCED MEDITATORS OR BEGINNERS REMAIN TENTATIVE. THIS IS AN ATTEMPT TO COMPILE THE MEDITATION-RELATED CHANGES IN ELECTROPHYSIOLOGICAL AND NEUROIMAGING PROCESSES AMONG EXPERIENCED AND NOVICE PRACTITIONERS. 2019 19 2760 54 YOGA PRACTITIONERS UNIQUELY ACTIVATE THE SUPERIOR PARIETAL LOBULE AND SUPRAMARGINAL GYRUS DURING EMOTION REGULATION. CHRONIC STRESS CONTRIBUTES TO BOTH MENTAL AND PHYSICAL ILLNESS. A HIGH PREVALENCE AND COST OF STRESS-RELATED ILLNESSES NORTH AMERICA WARRANTS INVESTIGATION INTO ALTERNATIVE OR COMPLEMENTARY THERAPIES WHICH MAY HELP REDUCE ADVERSE REACTIONS TO STRESSFUL STIMULI. EMOTION REGULATION IS THE PROCESS OF MONITORING AND ADJUSTING EMOTIONAL RESPONSES TO ENVIRONMENTAL STIMULI AND STRESSORS. INDIVIDUALS WHO PARTICIPATE IN PHYSICAL ACTIVITY ARE LESS LIKELY TO HAVE ADVERSE RESPONSES TO POTENTIALLY STRESSFUL SITUATIONS, POTENTIALLY DUE TO ADAPTIONS IN EMOTION REGULATION. YOGA IS A FORM OF PHYSICAL ACTIVITY INVOLVING STRETCHING EXERCISES AND MEDITATION, THAT MAY LESSEN INDIVIDUALS' LEVELS OF STRESS AND ANXIETY AND IMPROVE EMOTION REGULATION. HIGH-FREQUENCY HEART RATE VARIABILITY (HF-HRV) IS CONSIDERED A MEASURE OF PARASYMPATHETIC NERVOUS SYSTEM (PNS) ACTIVITY DURING THE EMOTION REGULATION. MEASURING HRV AND BRAIN ACTIVITY USING FUNCTIONAL MAGNETIC RESONANCE IMAGING (FMRI) OFFERS A USEFUL, NONINVASIVE APPROACH TO EVALUATING "NEUROVISCERAL" COMPONENTS OF EMOTION REGULATION. WE AIMED TO DETERMINE WHETHER YOGA PRACTITIONERS (YP) EXHIBIT DIFFERENT PATTERNS OF BRAIN ACTIVATION COMPARED TO RECREATIONAL ATHLETES (RA) WITHOUT CURRENT YOGA EXPERIENCE, WHILE VIEWING EMOTIONALLY AROUSING VISUAL STIMULI. OUR SECONDARY AIM WAS TO EXAMINE POTENTIAL DIFFERENCES ACROSS GROUPS IN HRV THROUGHOUT THE PRESENTATION OF THESE STIMULI. ANALYSIS OF FMRI DATA DURING EXPOSURE TO EMOTION-EVOKING (EE) STIMULI REVEALED THAT THE YP GROUP ACTIVATED TWO UNIQUE BRAIN AREAS, NAMELY THE SUPERIOR PARIETAL LOBULE AND THE SUPRAMARGINAL GYRUS. THESE AREAS HAVE BEEN ASSOCIATED WITH ATTENTIONAL AWARENESS AND REDUCED EGOCENTRIC BIAS, PROCESSES THAT HAVE BEEN IMPLICATED IN EMOTION REGULATION BY OTHERS. THE RA GROUP ACTIVATED THE INFERIOR MIDDLE FRONTAL CORTEX, AN AREA ASSOCIATED WITH COGNITIVE REAPPRAISAL DURING EMOTION REGULATION. THE YP GROUP ALSO DEMONSTRATED A TREND TOWARDS A HIGHER RATIO OF LOW- TO HIGH-FREQUENCY HRV COMPARED TO THE RA GROUP. THE PRESENT FINDINGS SUPPORT THE PRESENCE OF EXPERIENCE-DEPENDENT NEUROVISCERAL MECHANISMS ASSOCIATED WITH EMOTION REGULATION. INDIVIDUALS WHO PRACTICE YOGA REGULATE THEIR NEUROVISCERAL RESPONSES TO POTENTIALLY STRESSFUL EXTERNAL STIMULI IN A DIFFERENT MANNER THAN RECREATIONAL ATHLETES WHO DO NOT ENGAGE IN YOGA PRACTICE. THE PRESENT STUDY HAD A SMALL SAMPLE SIZE (RA: N = 12; YP: N = 19), WHICH SHOULD BE TAKEN INTO ACCOUNT WHEN INTERPRETING THE RESULTS. 2018 20 1266 28 FLUID INTELLIGENCE AND BRAIN FUNCTIONAL ORGANIZATION IN AGING YOGA AND MEDITATION PRACTITIONERS. NUMEROUS STUDIES HAVE DOCUMENTED THE NORMAL AGE-RELATED DECLINE OF NEURAL STRUCTURE, FUNCTION, AND COGNITIVE PERFORMANCE. PRELIMINARY EVIDENCE SUGGESTS THAT MEDITATION MAY REDUCE DECLINE IN SPECIFIC COGNITIVE DOMAINS AND IN BRAIN STRUCTURE. HERE WE EXTENDED THIS RESEARCH BY INVESTIGATING THE RELATION BETWEEN AGE AND FLUID INTELLIGENCE AND RESTING STATE BRAIN FUNCTIONAL NETWORK ARCHITECTURE USING GRAPH THEORY, IN MIDDLE-AGED YOGA AND MEDITATION PRACTITIONERS, AND MATCHED CONTROLS. FLUID INTELLIGENCE DECLINED SLOWER IN YOGA PRACTITIONERS AND MEDITATORS COMBINED THAN IN CONTROLS. RESTING STATE FUNCTIONAL NETWORKS OF YOGA PRACTITIONERS AND MEDITATORS COMBINED WERE MORE INTEGRATED AND MORE RESILIENT TO DAMAGE THAN THOSE OF CONTROLS. FURTHERMORE, MINDFULNESS WAS POSITIVELY CORRELATED WITH FLUID INTELLIGENCE, RESILIENCE, AND GLOBAL NETWORK EFFICIENCY. THESE FINDINGS REVEAL THE POSSIBILITY TO INCREASE RESILIENCE AND TO SLOW THE DECLINE OF FLUID INTELLIGENCE AND BRAIN FUNCTIONAL ARCHITECTURE AND SUGGEST THAT MINDFULNESS PLAYS A MECHANISTIC ROLE IN THIS PRESERVATION. 2014