1 1191 119 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 2 1590 17 MEDITATION AND YOGA CAN MODULATE BRAIN MECHANISMS THAT AFFECT BEHAVIOR AND ANXIETY-A MODERN SCIENTIFIC PERSPECTIVE. MEDITATION AND YOGA TECHNIQUES ARE RECEIVING INCREASED ATTENTION THROUGHOUT THE WORLD, DUE TO THE ACCUMULATION OF EVIDENCE BASED RESEARCH THAT PROVES THE DIRECT AND INDIRECT BENEFITS OF SUCH PRACTICES. BASED ON STUDIES CONDUCTED SO FAR, IT HAS BEEN FOUND THAT THE PRACTICE OF MEDITATION TRIGGERS NEUROTRANSMITTERS THAT MODULATE PSYCHOLOGICAL DISORDERS SUCH AS ANXIETY. THIS PAPER WILL REVIEW THE PSYCHOLOGICAL EFFECTS OF THE PRACTICE OF MEDITATION, THE ROLE OF NEUROTRANSMITTERS, AND STUDIES USING EEG AND FMRI. 2015 3 2849 18 YOGA, MEDITATION, AND IMAGERY: CLINICAL APPLICATIONS. HATHA YOGA AND MEDITATION AS ADJUNCTIVE THERAPIES FOR PROMOTING AND MAINTAINING WELLNESS OFFER AN EXCELLENT EXAMPLE OF THE MIND-BODY CONNECTION AT WORK. HATHA YOGA CREATES BALANCE, PHYSICALLY AND EMOTIONALLY, BY USING POSTURES, OR ASANAS, COMBINED WITH BREATHING TECHNIQUES, OR PRANAYAMA. MEDITATION AND GUIDED IMAGERY NOT ONLY SUPPORT THE PHYSICAL AND EMOTIONAL WORK BEING DONE BY THE POSTURES AND BREATHING, THEY OPEN THE DOOR TO SELF-ACTUALIZATION TO CREATE THE PERFECT UNION OF THE MIND, BODY, AND SPIRIT. THIS REPORT DISCUSSES THE DEFINITIONS OF HATHA YOGA, MEDITATION, AND IMAGERY AND THEIR CLINICAL APPLICATIONS. THREE CASE STUDIES FROM PRIVATE PRACTICE ARE PRESENTED. 1998 4 2888 16 YOGA: INTUITION, PREVENTIVE MEDICINE, AND TREATMENT. MIND-BODY FITNESS PROGRAMS USE A COMBINATION OF MUSCULAR ACTIVITY AND MINDFUL FOCUS ON AWARENESS OF THE SELF, BREATH, AND ENERGY TO PROMOTE HEALTH. THE ANCIENT DISCIPLINE OF YOGA INCLUDES PHYSICAL POSTURES AND BREATHING AND MEDITATION TECHNIQUES. SCIENTIFIC EVIDENCE EXISTS ABOUT THE PHYSIOLOGIC EFFECTS OF YOGA. MIND-BODY FITNESS PROGRAMS MAY OFFER THERAPEUTIC EFFECTS DIFFERENT FROM THOSE OFFERED BY TRADITIONAL BODY FITNESS PROGRAMS. 1998 5 2512 21 YOGA BREATHING, MEDITATION, AND LONGEVITY. YOGA BREATHING IS AN IMPORTANT PART OF HEALTH AND SPIRITUAL PRACTICES IN INDO-TIBETAN TRADITIONS. CONSIDERED FUNDAMENTAL FOR THE DEVELOPMENT OF PHYSICAL WELL-BEING, MEDITATION, AWARENESS, AND ENLIGHTENMENT, IT IS BOTH A FORM OF MEDITATION IN ITSELF AND A PREPARATION FOR DEEP MEDITATION. YOGA BREATHING (PRANAYAMA) CAN RAPIDLY BRING THE MIND TO THE PRESENT MOMENT AND REDUCE STRESS. IN THIS PAPER, WE REVIEW DATA INDICATING HOW BREATH WORK CAN AFFECT LONGEVITY MECHANISMS IN SOME WAYS THAT OVERLAP WITH MEDITATION AND IN OTHER WAYS THAT ARE DIFFERENT FROM, BUT THAT SYNERGISTICALLY ENHANCE, THE EFFECTS OF MEDITATION. WE ALSO PROVIDE CLINICAL EVIDENCE FOR THE USE OF YOGA BREATHING IN THE TREATMENT OF DEPRESSION, ANXIETY, POST-TRAUMATIC STRESS DISORDER, AND FOR VICTIMS OF MASS DISASTERS. BY INDUCING STRESS RESILIENCE, BREATH WORK ENABLES US TO RAPIDLY AND COMPASSIONATELY RELIEVE MANY FORMS OF SUFFERING. 2009 6 1934 18 ROLE OF YOGA IN STRESS MANAGEMENT. THE STATE OF THE MIND AND THAT OF THE BODY ARE INTIMATELY RELATED. IF THE MIND IS RELAXED, THE MUSCLES IN THE BODY WILL ALSO BE RELAXED. STRESS PRODUCES A STATE OF PHYSICAL AND MENTAL TENSION. YOGA, DEVELOPED THOUSANDS OF YEARS AGO, IS RECOGNIZED AS A FORM OF MIND-BODY MEDICINE. IN YOGA, PHYSICAL POSTURES AND BREATHING EXERCISES IMPROVE MUSCLE STRENGTH, FLEXIBILITY, BLOOD CIRCULATION AND OXYGEN UPTAKE AS WELL AS HORMONE FUNCTION. IN ADDITION, THE RELAXATION INDUCED BY MEDITATION HELPS TO STABILIZE THE AUTONOMIC NERVOUS SYSTEM WITH A TENDENCY TOWARDS PARASYMPATHETIC DOMINANCE. PHYSIOLOGICAL BENEFITS WHICH FOLLOW, HELP YOGA PRACTITIONERS BECOME MORE RESILIENT TO STRESSFUL CONDITIONS AND REDUCE A VARIETY OF IMPORTANT RISK FACTORS FOR VARIOUS DISEASES, ESPECIALLY CARDIO-RESPIRATORY DISEASES. 2004 7 1561 20 LONGEVITY: POTENTIAL LIFE SPAN AND HEALTH SPAN ENHANCEMENT THROUGH PRACTICE OF THE BASIC YOGA MEDITATION REGIMEN. THIS CHAPTER BRIEFLY REVIEWS RECENT PSYCHOLOGICAL, PHYSIOLOGICAL, MOLECULAR BIOLOGICAL, AND ANTHROPOLOGICAL RESEARCH WHICH HAS IMPORTANT IMPLICATIONS, BOTH DIRECT AND INDIRECT, FOR THE RECOGNITION AND UNDERSTANDING OF THE POTENTIAL LIFE SPAN AND HEALTH SPAN ENHANCING EFFECTS OF THE BASIC YOGA MEDITATIONAL REGIMEN. THIS REGIMEN CONSISTS OF MEDITATION, YOGIC BREATH CONTROL PRACTICES, PHYSICAL EXERCISES (OF BOTH A POSTURAL- AND MOVEMENT-BASED, INCLUDING AEROBIC NATURE), AND DIETARY PRACTICES. WHILE EACH OF THESE COMPONENT CATEGORIES EXHIBIT VARIATIONS IN DIFFERENT SCHOOLS, LINEAGES, TRADITIONS, AND CULTURES, THE FOCUS OF THIS CHAPTER IS PRIMARILY ON BASIC FORMS OF RELAXATION MEDITATION AND BREATH CONTROL, AS WELL AS POSTURAL AND AEROBIC PHYSICAL EXERCISES (E.G., YOGIC PROSTRATION REGIMENS, SEE BELOW), AND A STANDARD FORM OF YOGIC OR ASCETIC DIET, ALL OF WHICH CONSTITUTE A BASIC FORM OF REGIMEN FOUND IN MANY IF NOT MOST CULTURES, THOUGH WITH VARIATIONS. 2009 8 2429 25 YOGA AND PHYSICAL EXERCISE - A REVIEW AND COMPARISON. YOGA IS A MULTIFACETED SPIRITUAL TOOL WITH ENHANCED HEALTH AND WELL-BEING AS ONE OF ITS POSITIVE EFFECTS. THE COMPONENTS OF YOGA WHICH ARE VERY COMMONLY APPLIED FOR HEALTH BENEFITS ARE ASANAS (PHYSICAL POSTURES), PRANAYAMA (REGULATED BREATHING) AND MEDITATION. IN THE CONTEXT OF ASANAS, YOGA RESEMBLES MORE OF A PHYSICAL EXERCISE, WHICH MAY LEAD TO THE PERCEPTION THAT YOGA IS ANOTHER KIND OF PHYSICAL EXERCISE. THIS ARTICLE AIMS AT EXPLORING THE COMMONALITIES AND DIFFERENCES BETWEEN YOGA AND PHYSICAL EXERCISE IN TERMS OF CONCEPTS, POSSIBLE MECHANISMS AND EFFECTIVENESS FOR HEALTH BENEFITS. A NARRATIVE REVIEW IS UNDERTAKEN BASED ON TRADITIONAL AND CONTEMPORARY LITERATURE FOR YOGA, ALONG WITH SCIENTIFIC ARTICLES AVAILABLE ON YOGA AND EXERCISE INCLUDING HEAD-TO-HEAD COMPARATIVE TRIALS WITH HEALTHY VOLUNTEERS AND PATIENTS WITH VARIOUS DISEASE CONDITIONS. PHYSICAL EXERCISES AND THE PHYSICAL COMPONENTS OF YOGA PRACTICES HAVE SEVERAL SIMILARITIES, BUT ALSO IMPORTANT DIFFERENCES. EVIDENCE SUGGESTS THAT YOGA INTERVENTIONS APPEAR TO BE EQUAL AND/OR SUPERIOR TO EXERCISE IN MOST OUTCOME MEASURES. EMPHASIS ON BREATH REGULATION, MINDFULNESS DURING PRACTICE, AND IMPORTANCE GIVEN TO MAINTENANCE OF POSTURES ARE SOME OF THE ELEMENTS WHICH DIFFERENTIATE YOGA PRACTICES FROM PHYSICAL EXERCISES. 2016 9 1951 20 SCIENCE OF THE MIND: ANCIENT YOGA TEXTS AND MODERN STUDIES. THE PRACTICE OF YOGA IS GAINING IN POPULARITY WITH A WIDE RANGE OF PRACTICES. RECENT RESEARCH AND DESCRIPTIONS FROM THE ANCIENT TEXTS ARE OFTEN CONCURRENT WITH REGARD TO THE EFFECTS OF THE PRACTICE, TAKING INTO ACCOUNT EXPECTED DIFFERENCES BETWEEN MODERN SCIENTIFIC TERMS AND THOSE USED IN THE ORIGINAL TEXTS. VOLUNTARILY REGULATED YOGA BREATHING PRACTICES FORM A BRIDGE BETWEEN PHYSICAL AND MENTAL CHANGES. THE VOLUNTARILY REGULATED YOGA BREATHING HAS DISTINCT EFFECTS ON METABOLISM, THE AUTONOMIC NERVOUS SYSTEM, HIGHER BRAIN FUNCTIONS, AND MENTAL STATE. THE EFFECTS OF MEDITATION ON THE NERVOUS SYSTEM AND MENTAL STATE ARE EVEN CLEARER. 2013 10 1051 27 EFFECTS OF YOGA ON BRAIN WAVES AND STRUCTURAL ACTIVATION: A REVIEW. PREVIOUS RESEARCH HAS SHOWN THE VAST MENTAL AND PHYSICAL HEALTH BENEFITS ASSOCIATED WITH YOGA. YOGA PRACTICE CAN BE DIVIDED INTO SUBCATEGORIES THAT INCLUDE POSTURE-HOLDING EXERCISE (ASANA), BREATHING (PRANAYAMA, KRIYA), AND MEDITATION (SAHAJ) PRACTICE. STUDIES MEASURING MENTAL HEALTH OUTCOMES HAVE SHOWN DECREASES IN ANXIETY, AND INCREASES IN COGNITIVE PERFORMANCE AFTER YOGA INTERVENTIONS. SIMILAR STUDIES HAVE ALSO SHOWN COGNITIVE ADVANTAGES AMONGST YOGA PRACTITIONERS VERSUS NON-PRACTITIONERS. THE MENTAL HEALTH AND COGNITIVE BENEFITS OF YOGA ARE EVIDENT, BUT THE PHYSIOLOGICAL AND STRUCTURAL CHANGES IN THE BRAIN THAT LEAD TO THIS REMAIN A TOPIC THAT LACKS CONSENSUS. THEREFORE, THE PURPOSE OF THIS STUDY WAS TO EXAMINE AND REVIEW EXISTING LITERATURE ON THE EFFECTS OF YOGA ON BRAIN WAVES AND STRUCTURAL CHANGES AND ACTIVATION. AFTER A NARROWED SEARCH THROUGH A SET OF SPECIFIC INCLUSION AND EXCLUSION CRITERIA, 15 ARTICLES WERE USED IN THIS REVIEW. IT WAS CONCLUDED THAT BREATHING, MEDITATION, AND POSTURE-BASED YOGA INCREASED OVERALL BRAIN WAVE ACTIVITY. INCREASES IN GRAYGRAY MATTER ALONG WITH INCREASES IN AMYGDALA AND FRONTAL CORTEX ACTIVATION WERE EVIDENT AFTER A YOGA INTERVENTION. YOGA PRACTICE MAY BE AN EFFECTIVE ADJUNCTIVE TREATMENT FOR A CLINICAL AND HEALTHY AGING POPULATION. FURTHER RESEARCH CAN EXAMINE THE EFFECTS OF SPECIFIC BRANCHES OF YOGA ON A DESIGNATED CLINICAL POPULATION. 2015 11 1587 15 MEDICAL YOGA THERAPY. MEDICAL YOGA IS DEFINED AS THE USE OF YOGA PRACTICES FOR THE PREVENTION AND TREATMENT OF MEDICAL CONDITIONS. BEYOND THE PHYSICAL ELEMENTS OF YOGA, WHICH ARE IMPORTANT AND EFFECTIVE FOR STRENGTHENING THE BODY, MEDICAL YOGA ALSO INCORPORATES APPROPRIATE BREATHING TECHNIQUES, MINDFULNESS, AND MEDITATION IN ORDER TO ACHIEVE THE MAXIMUM BENEFITS. MULTIPLE STUDIES HAVE SHOWN THAT YOGA CAN POSITIVELY IMPACT THE BODY IN MANY WAYS, INCLUDING HELPING TO REGULATE BLOOD GLUCOSE LEVELS, IMPROVE MUSCULOSKELETAL AILMENTS AND KEEPING THE CARDIOVASCULAR SYSTEM IN TUNE. IT ALSO HAS BEEN SHOWN TO HAVE IMPORTANT PSYCHOLOGICAL BENEFITS, AS THE PRACTICE OF YOGA CAN HELP TO INCREASE MENTAL ENERGY AND POSITIVE FEELINGS, AND DECREASE NEGATIVE FEELINGS OF AGGRESSIVENESS, DEPRESSION AND ANXIETY. 2017 12 1266 16 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 13 1972 29 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 14 406 28 BIOLOGICAL MARKERS FOR THE EFFECTS OF YOGA AS A COMPLEMENTARY AND ALTERNATIVE MEDICINE. FROM THE LAST FEW DECADES, THERE ARE INCREASING INCIDENCES OF DISORDERS LIKE PREMATURE AGING, CARDIOVASCULAR DISEASE, MULTIPLE SCLEROSIS, FIBROMYALGIA, AND ALZHEIMER'S DISEASE IN ADDITION TO MEDICATION, RESEARCHERS HAVE FOUND THAT YOGA, A MIND-BODY THERAPY, CAN BE USED AS AN ALTERNATIVE MEDICINE. YOGA COMBINES SPECIFIC PHYSICAL POSTURES, BREATHING TECHNIQUES, RELAXATION AND MEDITATION THAT IMPROVE MENTAL AND PHYSICAL HEALTH OF THE BODY. THE PURPOSE OF THIS REVIEW IS TO COLLATE THE RESEARCH EVIDENCES CLAIMING HEALTH BENEFITS OF PERFORMING TRADITIONAL YOGIC PRACTICES. WHAT ARE THE BIOLOGICAL AND OTHER RELIABLE INDICATORS TO SUGGEST THAT DOING ASANAS, PRANAYAMA, AND MEDITATION COULD REDUCE OR TREAT WIDE RANGE OF LIFE STYLE DISORDERS ARE DISCUSSED. IMPORTANTLY, THESE INDICATORS ARE OTHERWISE USED TO ASSESS THE SEVERITY OF DISORDERS. IN MANY OF THE STUDY IT HAS BEEN SHOWN THAT YOGA IMPROVES THE REDOX HEALTH OF BODY WHOSE IMBALANCE HAS BEEN WELL PROVEN TO CAUSE MANY HEALTH COMPLICATIONS. THE IMPACT OF YOGA ON NEURODEGENERATIVE DISEASES HAVE REVEALED THAT IT REVERSES MEMORY LOSS, REDUCE ANXIETY, DEPRESSION AND STRESS, THE BIOLOGICAL INDICATORS OF DISEASE. HOWEVER, MOST STUDIES HAVE SEVERAL LIMITATIONS AND THEREFORE FURTHER RESEARCH INTO YOGA IS NEEDED TO VALIDATE THESE FINDINGS. 2019 15 2564 27 YOGA FOR CONTROL OF EPILEPSY. YOGA IS AN AGE-OLD TRADITIONAL INDIAN PSYCHO-PHILOSOPHICAL-CULTURAL METHOD OF LEADING ONE'S LIFE, THAT ALLEVIATES STRESS, INDUCES RELAXATION AND PROVIDES MULTIPLE HEALTH BENEFITS TO THE PERSON FOLLOWING ITS SYSTEM. IT IS A METHOD OF CONTROLLING THE MIND THROUGH THE UNION OF AN INDIVIDUAL'S DORMANT ENERGY WITH THE UNIVERSAL ENERGY. COMMONLY PRACTICED YOGA METHODS ARE 'PRANAYAMA' (CONTROLLED DEEP BREATHING), 'ASANAS' (PHYSICAL POSTURES) AND 'DHYANA' (MEDITATION) ADMIXED IN VARYING PROPORTIONS WITH DIFFERING PHILOSOPHIC IDEAS. A REVIEW OF YOGA IN RELATION TO EPILEPSY ENCOMPASSES NOT ONLY SEIZURE CONTROL BUT ALSO MANY FACTORS DEALING WITH OVERALL QUALITY-OF-LIFE ISSUES (QOL). THIS PAPER REVIEWS ARTICLES RELATED TO YOGA AND EPILEPSY, SEIZURES, EEG, AUTONOMIC CHANGES, NEURO-PSYCHOLOGY, LIMBIC SYSTEM, AROUSAL, SLEEP, BRAIN PLASTICITY, MOTOR PERFORMANCE, BRAIN IMAGING STUDIES, AND REHABILITATION. THERE IS A DEARTH OF RANDOMIZED, BLINDED, CONTROLLED STUDIES RELATED TO YOGA AND SEIZURE CONTROL. A MULTI-CENTRE, CROSS-CULTURAL, PREFERABLY BLINDED (DIFFICULT FOR YOGA), WELL-RANDOMIZED CONTROLLED TRIAL, ESPECIALLY USING A SINGLE YOGIC TECHNIQUE IN A HOMOGENEOUS POPULATION SUCH AS JUVENILE MYOCLONIC EPILEPSY IS JUSTIFIED TO FIND OUT HOW YOGA AFFECTS SEIZURE CONTROL AND QOL OF THE PERSON WITH EPILEPSY. 2001 16 2254 32 THE ORIGIN AND CLINICAL RELEVANCE OF YOGA NIDRA. YOGA NIDRA, ALSO KNOWN AS 'YOGIC SLEEP', IS A SIMPLIFIED FORM OF AN ANCIENT TANTRIC RELAXATION TECHNIQUE. THE MOST GENERAL DESCRIPTION OF THE PRACTICE IS THAT IT COMBINES GUIDED MENTAL IMAGERY WITH A SPECIFIC YOGA POSTURE CALLED SHAVASANA (OR "CORPSE POSE"). THE GOAL OF YOGA NIDRA IS TO PROMOTE A PROFOUND STATE OF RELAXATION, WHICH DIFFERS FROM SLEEP INASMUCH AS THERE IS STILL AN AWARENESS OF ONE'S SURROUNDINGS. WHILE SEVERAL COMPONENTS OF THE PRACTICE HAVE BEEN KNOWN SINCE ANCIENT TIMES, IT WAS NOT UNTIL THE 1960S THAT AN UPDATED AND SYSTEMATIZED SYSTEM OF PRACTICE WAS INTRODUCED TO THE PUBLIC THROUGH THE WRITINGS OF SWAMI SATYANANDA SARASWATI. UNLIKE OTHER SCHOOLS OF YOGA, WHICH EMPHASIZE CONCENTRATION OR CONTEMPLATION, YOGA NIDRA'S GOAL IS COMPLETE RELAXATION. AS SUCH, ITS ADVOCATES CLAIM THAT IT IS SUITABLE FOR ALL INDIVIDUALS, FROM BEGINNERS TO ADVANCED PRACTITIONERS OF YOGA. THE CALM INNER STILLNESS INDUCED BY YOGA NIDRA IS CLAIMED BY PRACTITIONERS TO BE AN EFFECTIVE STRESS MANAGEMENT TOOL AS WELL AS A MEANS FOR ATTAINING GREATER RECEPTIVITY TO PERSONAL RESOLUTIONS. THESE RESOLUTIONS CAN RANGE FROM THE GOAL OF ACHIEVING SELF-TRANSFORMATION, ENHANCING CREATIVITY, OR IMPROVING ONE'S LEARNING ABILITY. ADDITIONALLY, YOGA NIDRA IS CLAIMED TO PROMOTE BENEFICIAL CHANGES IN PHYSIOLOGICAL AND MENTAL HEALTH. THE FOLLOWING NARRATIVE REVIEW SUMMARIZES THE BASIC STEPS USED TO ACHIEVE THE FINAL STATE OF YOGA NIDRA RELAXATION AS WELL AS SOME RECENT EXPERIMENTAL FINDINGS REGARDING ITS PHYSIOLOGICAL AND PSYCHOLOGICAL EFFECTS. STANDARD RESEARCH DATABASES WERE SEARCHED FOR RELEVANT ARTICLES. CLINICAL STUDIES HAVE SHOWN THAT YOGA NIDRA MEDITATION IS ASSOCIATED WITH POSITIVE PHYSIOLOGICAL CHANGES, INCLUDING IMPROVEMENTS IN SEVERAL HEMATOLOGICAL VARIABLES, RED BLOOD CELL COUNTS, BLOOD GLUCOSE LEVELS, AND HORMONAL STATUS. TWO NEUROIMAGING STUDIES HAVE SHOWN THAT YOGA NIDRA PRODUCES CHANGES IN ENDOGENOUS DOPAMINE RELEASE AND CEREBRAL BLOOD FLOW, A FURTHER CONFIRMATION THAT ITS EFFECTS ON THE CNS ARE OBJECTIVELY MEASURABLE. THE PRACTICE HAS ALSO BEEN SHOWN TO REDUCE PSYCHOMETRICALLY MEASURED INDICES OF MILD DEPRESSION AND ANXIETY, ALTHOUGH THESE BENEFITS WERE NOT SHOWN IN AN EXPERIMENTAL STUDY TO EXTEND TO SEVERE DEPRESSION OR SEVERE ANXIETY. 2022 17 1817 16 PROPOSED IDENTIFICATION OF PHYSIOLOGICAL CLASSIFICATION AND THEORETICAL MECHANISMS OF YOGASANAS. YOGA IN THE THEORETICAL AND PRACTICAL FORM IS NOW ACCEPTED ALL OVER THE WORLD, BY THE RESEARCHERS AS WELL AS BY THE GENERAL POPULATION. YOGASANA OR YOGIC POSTURES ARE ONE OF THE MAIN FOUNDATIONS OF PRACTICAL YOGA. MECHANISMS OF MEDIATION AND PRANAYAMA HAS ALREADY BEEN ESTABLISHED. IN THIS ARTICLE, THE AUTHOR IS FOR THE FIRST TIME PROPOSING PHYSIOLOGICAL CLASSIFICATION OF YOGASANA I.E. (A) STRETCH (B) CONTRACTION (C). NEUROMUSCULAR COORDINATION (D) SENSE REDUCTION (E) SPINE BRAIN ACTIVATION. IN SUPPORT OF THIS PHYSIOLOGICAL CLASSIFICATION AUTHOR HAS PROPOSED FIVE HYPOTHETICAL THEORIES I.E. (I) STRETCH RELAXATION AWARENESS (II) CONTRACTION RELAXATION AWARENESS (III) BALLASTIC CONTRACTION RELAXATION AWARENESS (IV) SENSORY MOTOR FUNCTION AWARENESS AND (V) VITAL ENERGY FLOW AWARENESS TO UNDERSTAND THE UNDERLYING MECHANISMS OF YOGASANA PRACTICE AND TO EXPLAIN ITS BENEFITS. 2021 18 2531 29 YOGA EFFECTS ON BRAIN HEALTH: A SYSTEMATIC REVIEW OF THE CURRENT LITERATURE. YOGA IS THE MOST POPULAR COMPLEMENTARY HEALTH APPROACH PRACTICED BY ADULTS IN THE UNITED STATES. IT IS AN ANCIENT MIND AND BODY PRACTICE WITH ORIGINS IN INDIAN PHILOSOPHY. YOGA COMBINES PHYSICAL POSTURES, RHYTHMIC BREATHING AND MEDITATIVE EXERCISE TO OFFER THE PRACTITIONERS A UNIQUE HOLISTIC MIND-BODY EXPERIENCE. WHILE THE HEALTH BENEFITS OF PHYSICAL EXERCISE ARE WELL ESTABLISHED, IN RECENT YEARS, THE ACTIVE ATTENTIONAL COMPONENT OF BREATHING AND MEDITATION PRACTICE HAS GARNERED INTEREST AMONG EXERCISE NEUROSCIENTISTS. AS THE SCIENTIFIC EVIDENCE FOR THE PHYSICAL AND MENTAL HEALTH BENEFITS OF YOGA CONTINUES TO GROW, THIS ARTICLE AIMS TO SUMMARIZE THE CURRENT KNOWLEDGE OF YOGA PRACTICE AND ITS DOCUMENTED POSITIVE EFFECTS FOR BRAIN STRUCTURE AND FUNCTION, AS ASSESSED WITH MRI, FMRI, AND SPECT. WE REVIEWED 11 STUDIES EXAMINING THE EFFECTS OF YOGA PRACTICE ON THE BRAIN STRUCTURES, FUNCTION AND CEREBRAL BLOOD FLOW. COLLECTIVELY, THE STUDIES DEMONSTRATE A POSITIVE EFFECT OF YOGA PRACTICE ON THE STRUCTURE AND/OR FUNCTION OF THE HIPPOCAMPUS, AMYGDALA, PREFRONTAL CORTEX, CINGULATE CORTEX AND BRAIN NETWORKS INCLUDING THE DEFAULT MODE NETWORK (DMN). THE STUDIES OFFER PROMISING EARLY EVIDENCE THAT BEHAVIORAL INTERVENTIONS LIKE YOGA MAY HOLD PROMISE TO MITIGATE AGE-RELATED AND NEURODEGENERATIVE DECLINES AS MANY OF THE REGIONS IDENTIFIED ARE KNOWN TO DEMONSTRATE SIGNIFICANT AGE-RELATED ATROPHY. 2019 19 398 26 BEYOND SCIENTIFIC MECHANISMS: SUBJECTIVE PERCEPTIONS WITH VINIYOGA MEDITATION. HEALTHCARE PROFESSIONALS AND RESEARCH SCIENTISTS GENERALLY RECOGNIZE THE POTENTIAL VALUE OF MIND-BODY PRACTICES GROUNDED IN ANCIENT WISDOM, BUT OFTEN HAVE LIMITED DIRECT EXPERIENCE WITH SUCH PRACTICES. MEDITATION PARTICIPANT SELF-REPORTS PROVIDE A WINDOW INTO SUBJECTIVE EXPERIENCES OF THREE VINIYOGA MEDITATIONS AND HOW AND WHY THOSE MEDITATIONS COULD CONTRIBUTE TO HEALTH AND WELL-BEING OUTCOMES. EACH OF THE MEDITATIONS IN THIS ANALYSIS HAD A UNIQUE STRUCTURE AND USED A DIFFERENT ASPECT OF THE OCEAN AS A MEDITATION OBJECT. YOGA PHILOSOPHY AND YOGA ANATOMY MODELS OF THE HUMAN SYSTEM ARE USED TO HELP EXPLAIN PARTICIPANTS' EXPERIENCES AND ASSOCIATED PERSONAL BENEFITS AND INSIGHTS. FOUR ASPECTS OF THE INDIVIDUAL THAT CAN INFLUENCE WHAT HAPPENS FOR THEM IN MEDITATION ARE ILLUSTRATED WITH TANGIBLE EXAMPLES: (1) WHAT IS HAPPENING IN GENERALLY IN SOMEONE'S LIFE; (2) THE STATE OF THEIR SYSTEM (MIND, BODY, BREATH) AROUND THE TIME OF THE MEDITATION; (3) REACTIONS TO THE MEDITATION STEPS AND INSTRUCTIONS; AND (4) THEIR PRIOR EXPERIENCES WITH THE OBJECT OF MEDITATION. SUMMARIES OF THE PRACTICES, AND WHY AND FOR WHOM EACH MEDITATION MIGHT BE BENEFICIAL ARE DISCUSSED. THE AUTHORS' PERSPECTIVES ARE GROUNDED IN VINIYOGA AND YOGA THERAPY. 2019 20 2676 19 YOGA IN RHEUMATIC DISEASES. YOGA IS A POPULAR ACTIVITY WHICH MAY BE WELL SUITED TO SOME INDIVIDUALS WITH SPECIFIC RHEUMATIC DISORDERS. REGULAR YOGA PRACTICE CAN INCREASE MUSCLE STRENGTH AND ENDURANCE, PROPRIOCEPTION, AND BALANCE, WITH EMPHASIS ON MOVEMENT THROUGH A FULL RANGE OF MOTION TO INCREASE FLEXIBILITY AND MOBILITY. ADDITIONAL BENEFICIAL ELEMENTS OF YOGA INCLUDE BREATHING, RELAXATION, BODY AWARENESS, AND MEDITATION, WHICH CAN REDUCE STRESS AND ANXIETY AND PROMOTE A SENSE OF CALMNESS, GENERAL WELL-BEING, AND IMPROVED QUALITY OF LIFE. YOGA ALSO ENCOURAGES A MEDITATIVE FOCUS, INCREASED BODY AWARENESS AND MINDFULNESS; SOME EVIDENCE SUGGESTS YOGA MAY HELP REDUCE INFLAMMATORY MEDIATORS INCLUDING C-REACTIVE PROTEIN AND INTERLEUKIN-6. YOGA IS BEST LEARNED UNDER THE SUPERVISION OF QUALIFIED TEACHERS WHO ARE WELL INFORMED ABOUT THE POTENTIAL MUSCULOSKELETAL NEEDS OF EACH INDIVIDUAL. HERE, WE BRIEFLY REVIEW THE LITERATURE ON YOGA FOR HEALTHY, MUSCULOSKELETAL, AND RHEUMATIC DISEASE POPULATIONS AND OFFER RECOMMENDATIONS FOR DISCUSSING WAYS TO BEGIN YOGA WITH PATIENTS. 2013