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    뉴로피드백 연구 동향과 불면증 중재 효과 : 서지계량분석과 체계적 문헌고찰 및 메타분석(2010-2025)

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    https://www.riss.kr/link?id=T17368439

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    부가정보

    다국어 초록 (Multilingual Abstract) kakao i 다국어 번역

    Insomnia is a prevalent and burdensome sleep disorder characterized by persistent difficulties initiating or maintaining sleep, accompanied by impaired daytime functioning. Beyond subjective sleep complaints, insomnia is associated with fatigue, reduced cognitive performance, emotional dysregulation, and elevated risks of psychiatric disorders and cardiometabolic conditions. The public health impact is substantial because insomnia is linked to decreased quality of life and productivity loss at the population level. Current evidence-based care emphasizes non-pharmacological management, particularly cognitive behavioral therapy for insomnia (CBT-I), which is widely recognized as an effective first-line approach. However, real-world implementation remains constrained by limited accessibility, the need for trained providers, and the sustained engagement required from patients. Pharmacological treatments can be effective in the short term, but concerns persist regarding tolerance, dependence, and adverse effects with prolonged use. These limitations have increased interest in complementary and non-invasive interventions that may support self-regulation of sleep-related neurophysiological processes.
    The purpose of this study was to integrate a bibliometric analysis of global neurofeedback research with a meta-analysis of randomized controlled trials to quantify the clinical effects of neurofeedback for insomnia. Neurofeedback is a brain-based training technique in which individuals receive real-time feedback on neural activity and learn to modulate targeted patterns through repeated practice. In the context of insomnia, neurofeedback has been proposed as a potential intervention for addressing cortical hyperarousal and maladaptive neurophysiological regulation by reinforcing sleep-conducive rhythms (e.g., sensorimotor rhythm or alpha activity) and/or downregulating excessive high-frequency activation. Despite growing clinical and academic attention, the field has faced two persistent challenges: (1) an incomplete understanding of how insomnia-related research is positioned within the broader neurofeedback literature and (2) limited synthesis of randomized evidence regarding the magnitude and consistency of treatment effects, particularly across subjective and objective sleep outcomes. This study addresses these gaps through a mixed-methods design that integrates macro-level mapping of the research landscape with a quantitative evaluation of clinical trial outcomes.
    A bibliometric analysis was conducted using records retrieved from PubMed and Web of Science Core Collection from January 2010 to October 2025. A total of 2,090 records were identified (PubMed n=450; Web of Science n=1,640). After de-duplication, 1,838 unique publications were included for analysis. To examine sleep- and insomnia-focused research in greater depth, a three-stage filtering procedure was applied to extract a sleep-focused subcorpus of 487 articles, representing 26.5% of the full corpus. Bibliometric indicators were used to evaluate publication growth, country and institutional productivity, and international collaboration patterns. Thematic structures were examined using keyword co-occurrence analysis and Latent Dirichlet Allocation topic modeling to identify major research clusters and to characterize the consolidation and differentiation of insomnia-related themes within the neurofeedback knowledge structure.
    In parallel, a systematic review and meta-analysis of randomized controlled trials (RCTs) was performed in accordance with PRISMA 2020 guidelines. RCTs evaluating neurofeedback interventions among adults with insomnia were included. Eight trials met eligibility criteria (total N=320; intervention n=179; control n=141), encompassing diverse protocol types, including sensorimotor rhythm, alpha, infra-low frequency, and real-time functional magnetic resonance imaging-based neurofeedback. Risk of bias was assessed using the Cochrane Risk of Bias 2.0 tool. Outcomes were categorized into subjective sleep measures, assessed using the Insomnia Severity Index (ISI) and the Pittsburgh Sleep Quality Index (PSQI), and objective sleep duration, assessed using total sleep time (TST). Hedges’ g was calculated as the standardized effect size, and random-effects models were applied to account for between-study heterogeneity. Subgroup analyses examined moderation by control condition and protocol type. Exploratory meta-regressions evaluated dose-related indicators, including total number of sessions, session duration, weekly frequency, and cumulative training hours.
    The bibliometric analysis demonstrated steady growth in neurofeedback research over the study period, with a compound annual growth rate of 14.21% and publication volume exceeding 200 per year by 2024. Country-level productivity indicated that the United States, Germany, and China were leading contributors, while South Korea ranked 12th globally and third in Asia, reflecting emerging yet expanding activity. Topic modeling identified eight major research clusters, with attention-deficit/hyperactivity disorder, sleep and insomnia, emotional regulation, and brain–computer interfaces representing prominent themes. Importantly, sleep and insomnia were characterized as an increasingly distinct research domain, showing both increasing publication volume and thematic consolidation in recent years.
    Meta-analytic findings indicated significant improvements in subjective insomnia outcomes following neurofeedback. For the ISI, the pooled effect size was large (g = −1.18, 95% CI −1.70 to −0.65, p < .001). For the PSQI, a moderate effect was observed (g = −0.64, 95% CI −0.97 to −0.30, p < .001). In contrast, objective sleep duration did not significantly change (TST: g = .31, 95% CI −0.07 to 0.68, p = .107), suggesting a divergence between perceived symptom improvement and measurable changes in sleep duration. Subgroup analysis by control condition demonstrated larger effects relative to waitlist controls (g = −1.45) than to active controls (g = −0.85), with statistically significant between-group heterogeneity (Q = 4.89, p = .027). When compared specifically with sham neurofeedback controls, significant effects were maintained (g = −0.79, p = .001), suggesting that observed improvements may not be fully explained by nonspecific or placebo-related factors. Protocol-type differences were not statistically significant (Q = 3.12, p = .538), although interpretation is constrained by the limited number of trials within each protocol category. Meta-regressions did not identify significant dose–response relationships across total sessions (p = .327), session duration (p = .302), weekly frequency (p = .251), or cumulative training hours (p = .289). Sensitivity analyses supported robustness, and publication-bias assessments indicated limited evidence of systematic bias.
    Several limitations warrant consideration. The number of eligible RCTs was modest, with relatively small sample sizes, which likely reduced statistical power for moderator analyses. Reliance on self-reported outcomes and challenges in blinding participants in neurofeedback trials may contribute to measurement and expectancy effects. Limited variability in training dosage parameters across studies may have constrained detection of dose–response patterns. Additionally, insufficient long-term follow-up data prevents firm conclusions regarding durability of effects.
    In conclusion, this integrated synthesis indicates that insomnia has become a prominent and growing domain within neurofeedback research. RCT evidence suggests that neurofeedback is associated with meaningful improvements in subjective insomnia symptoms, including effects persisting against sham controls, while objective sleep duration remains unchanged. These findings support the view that neurofeedback may be positioned as a complementary, non-pharmacological intervention for perceived sleep disturbance. Future research should prioritize well-powered, multi-center trials with standardized protocols and reporting, refined sham designs, objective sleep assessments (e.g., polysomnography or high-resolution actigraphy), cost-effectiveness evaluations, and long-term follow-up across diverse clinical and cultural contexts, including Korea.
    번역하기

    Insomnia is a prevalent and burdensome sleep disorder characterized by persistent difficulties initiating or maintaining sleep, accompanied by impaired daytime functioning. Beyond subjective sleep complaints, insomnia is associated with fatigue, reduc...

    Insomnia is a prevalent and burdensome sleep disorder characterized by persistent difficulties initiating or maintaining sleep, accompanied by impaired daytime functioning. Beyond subjective sleep complaints, insomnia is associated with fatigue, reduced cognitive performance, emotional dysregulation, and elevated risks of psychiatric disorders and cardiometabolic conditions. The public health impact is substantial because insomnia is linked to decreased quality of life and productivity loss at the population level. Current evidence-based care emphasizes non-pharmacological management, particularly cognitive behavioral therapy for insomnia (CBT-I), which is widely recognized as an effective first-line approach. However, real-world implementation remains constrained by limited accessibility, the need for trained providers, and the sustained engagement required from patients. Pharmacological treatments can be effective in the short term, but concerns persist regarding tolerance, dependence, and adverse effects with prolonged use. These limitations have increased interest in complementary and non-invasive interventions that may support self-regulation of sleep-related neurophysiological processes.
    The purpose of this study was to integrate a bibliometric analysis of global neurofeedback research with a meta-analysis of randomized controlled trials to quantify the clinical effects of neurofeedback for insomnia. Neurofeedback is a brain-based training technique in which individuals receive real-time feedback on neural activity and learn to modulate targeted patterns through repeated practice. In the context of insomnia, neurofeedback has been proposed as a potential intervention for addressing cortical hyperarousal and maladaptive neurophysiological regulation by reinforcing sleep-conducive rhythms (e.g., sensorimotor rhythm or alpha activity) and/or downregulating excessive high-frequency activation. Despite growing clinical and academic attention, the field has faced two persistent challenges: (1) an incomplete understanding of how insomnia-related research is positioned within the broader neurofeedback literature and (2) limited synthesis of randomized evidence regarding the magnitude and consistency of treatment effects, particularly across subjective and objective sleep outcomes. This study addresses these gaps through a mixed-methods design that integrates macro-level mapping of the research landscape with a quantitative evaluation of clinical trial outcomes.
    A bibliometric analysis was conducted using records retrieved from PubMed and Web of Science Core Collection from January 2010 to October 2025. A total of 2,090 records were identified (PubMed n=450; Web of Science n=1,640). After de-duplication, 1,838 unique publications were included for analysis. To examine sleep- and insomnia-focused research in greater depth, a three-stage filtering procedure was applied to extract a sleep-focused subcorpus of 487 articles, representing 26.5% of the full corpus. Bibliometric indicators were used to evaluate publication growth, country and institutional productivity, and international collaboration patterns. Thematic structures were examined using keyword co-occurrence analysis and Latent Dirichlet Allocation topic modeling to identify major research clusters and to characterize the consolidation and differentiation of insomnia-related themes within the neurofeedback knowledge structure.
    In parallel, a systematic review and meta-analysis of randomized controlled trials (RCTs) was performed in accordance with PRISMA 2020 guidelines. RCTs evaluating neurofeedback interventions among adults with insomnia were included. Eight trials met eligibility criteria (total N=320; intervention n=179; control n=141), encompassing diverse protocol types, including sensorimotor rhythm, alpha, infra-low frequency, and real-time functional magnetic resonance imaging-based neurofeedback. Risk of bias was assessed using the Cochrane Risk of Bias 2.0 tool. Outcomes were categorized into subjective sleep measures, assessed using the Insomnia Severity Index (ISI) and the Pittsburgh Sleep Quality Index (PSQI), and objective sleep duration, assessed using total sleep time (TST). Hedges’ g was calculated as the standardized effect size, and random-effects models were applied to account for between-study heterogeneity. Subgroup analyses examined moderation by control condition and protocol type. Exploratory meta-regressions evaluated dose-related indicators, including total number of sessions, session duration, weekly frequency, and cumulative training hours.
    The bibliometric analysis demonstrated steady growth in neurofeedback research over the study period, with a compound annual growth rate of 14.21% and publication volume exceeding 200 per year by 2024. Country-level productivity indicated that the United States, Germany, and China were leading contributors, while South Korea ranked 12th globally and third in Asia, reflecting emerging yet expanding activity. Topic modeling identified eight major research clusters, with attention-deficit/hyperactivity disorder, sleep and insomnia, emotional regulation, and brain–computer interfaces representing prominent themes. Importantly, sleep and insomnia were characterized as an increasingly distinct research domain, showing both increasing publication volume and thematic consolidation in recent years.
    Meta-analytic findings indicated significant improvements in subjective insomnia outcomes following neurofeedback. For the ISI, the pooled effect size was large (g = −1.18, 95% CI −1.70 to −0.65, p < .001). For the PSQI, a moderate effect was observed (g = −0.64, 95% CI −0.97 to −0.30, p < .001). In contrast, objective sleep duration did not significantly change (TST: g = .31, 95% CI −0.07 to 0.68, p = .107), suggesting a divergence between perceived symptom improvement and measurable changes in sleep duration. Subgroup analysis by control condition demonstrated larger effects relative to waitlist controls (g = −1.45) than to active controls (g = −0.85), with statistically significant between-group heterogeneity (Q = 4.89, p = .027). When compared specifically with sham neurofeedback controls, significant effects were maintained (g = −0.79, p = .001), suggesting that observed improvements may not be fully explained by nonspecific or placebo-related factors. Protocol-type differences were not statistically significant (Q = 3.12, p = .538), although interpretation is constrained by the limited number of trials within each protocol category. Meta-regressions did not identify significant dose–response relationships across total sessions (p = .327), session duration (p = .302), weekly frequency (p = .251), or cumulative training hours (p = .289). Sensitivity analyses supported robustness, and publication-bias assessments indicated limited evidence of systematic bias.
    Several limitations warrant consideration. The number of eligible RCTs was modest, with relatively small sample sizes, which likely reduced statistical power for moderator analyses. Reliance on self-reported outcomes and challenges in blinding participants in neurofeedback trials may contribute to measurement and expectancy effects. Limited variability in training dosage parameters across studies may have constrained detection of dose–response patterns. Additionally, insufficient long-term follow-up data prevents firm conclusions regarding durability of effects.
    In conclusion, this integrated synthesis indicates that insomnia has become a prominent and growing domain within neurofeedback research. RCT evidence suggests that neurofeedback is associated with meaningful improvements in subjective insomnia symptoms, including effects persisting against sham controls, while objective sleep duration remains unchanged. These findings support the view that neurofeedback may be positioned as a complementary, non-pharmacological intervention for perceived sleep disturbance. Future research should prioritize well-powered, multi-center trials with standardized protocols and reporting, refined sham designs, objective sleep assessments (e.g., polysomnography or high-resolution actigraphy), cost-effectiveness evaluations, and long-term follow-up across diverse clinical and cultural contexts, including Korea.

    더보기

    목차 (Table of Contents)

    • 목 차 ⅰ
    • 표 목 차 ⅺ
    • 그림목차 xiv
    • I. 서 론 1
    • 1. 연구의 배경 및 필요성 1
    • 목 차 ⅰ
    • 표 목 차 ⅺ
    • 그림목차 xiv
    • I. 서 론 1
    • 1. 연구의 배경 및 필요성 1
    • 1) 불면증의 보건학적 중요성 1
    • 2) 기존 불면증 치료의 한계와 비약물적 중재의 필요성 3
    • 3) 뉴로피드백의 부상과 불면증 적용 5
    • 4) 뉴로피드백 효과에 대한 논쟁과 선행 메타분석의 한계 8
    • 5) 뉴로피드백 연구 동향 파악의 필요성 10
    • 6) 계량서지분석과 메타분석의 통합 연구 필요성 12
    • 2. 연구 목적 및 연구 문제 13
    • 1) 연구 목적 13
    • 2) 연구 문제 15
    • 3) 연구 가설 17
    • 3. 연구의 의의 20
    • 1) 학술적 의의 20
    • 2) 임상적 의의 21
    • 3) 방법론적 의의 21
    • 4. 연구의 범위 및 논문의 구성 22
    • 1) 연구의 범위 22
    • 2) 논문의 구성 22
    • Ⅱ. 이론적 배경 23
    • 1. 불면증의 정의와 역학 23
    • 1) 불면증의 진단 기준 23
    • 2) 불면증의 역학 및 사회경제적 영향 24
    • 3) 위험 요인 및 공존 질환 25
    • 2. 불면증의 병태생리학적 기전 27
    • 1) 과각성 모델 27
    • 2) 신경생리학적 특성 27
    • 3) 인지적・정서적 과각성 28
    • 4) 행동적 요인과 수면 항상성 29
    • 3. 불면증의 기존 치료법과 한계 31
    • 1) 인지행동치료 31
    • 2) 약물치료 33
    • 3) 기타 비약물적 중재 34
    • (1) 마음챙김 명상 및 요가 34
    • (2) 운동 요법 34
    • (3) 이완 기법 및 바이오피드백 35
    • (4) 침술 35
    • (5) 광치료 35
    • 4. 뉴로피드백의 개념과 이론적 기반 37
    • 1) 뉴로피드백의 정의와 작동 원리 37
    • 2) 뉴로피드백의 발전 과정 38
    • 3) 뉴로피드백의 이론적 기반 39
    • 4) 뉴로피드백의 유형 40
    • (1) EEG 기반 뉴로피드백 40
    • (2) fMRI 기반 뉴로피드백 40
    • (3) 초저주파(ILF) 뉴로피드백 41
    • (4) 기타 신호 기반 접근 41
    • 5. 불면증 치료를 위한 뉴로피드백 42
    • 1) 이론적 타당성 42
    • 2) 주요 뉴로피드백 프로토콜 43
    • (1) 감각운동리듬 증강 훈련 43
    • (2) 베타파 억제 훈련 43
    • (3) 알파파 훈련 43
    • (4) 세타/알파 비율 조절 훈련 44
    • (5) 초저주파(ILF) 훈련 44
    • (6) 기능적 자기공명영상 기반(fMRI) 뉴로피드백 45
    • 3) 선행 연구 고찰 46
    • 4) 연구 공백 및 한계 48
    • 6. 계량서지분석 및 메타분석 방법론 50
    • 1) 계량서지분석 50
    • 2) 메타분석 51
    • 3) 혼합연구 설계의 타당성 54
    • Ⅲ. 연구 방법 56
    • 1. 연구 설계 개요 56
    • 1) 혼합연구 설계 56
    • 2) 연구 흐름도 58
    • (1) 문헌 검색 단계 58
    • (2) 계량서지분석 단계 59
    • (3) 메타분석 단계 59
    • (4) 통합 해석 단계 59
    • 3) 연구문제 및 가설 62
    • 4) 삼각검증 전략 66
    • 2. 계량서지분석 방법(RQ1, RQ2) 68
    • 1) 분석 대상 정의 및 데이터 수집 68
    • (1) 데이터 베이스 68
    • (2) 검색어 68
    • (3) 검색 기간 68
    • (4) 문헌 유형 69
    • (5) 선정 및 제외 기준 69
    • 2) 데이터 전처리 71
    • 3) 수면 하위코퍼스 추출 72
    • 4) 분석 도구 74
    • 5) 분석 영역 75
    • (1) 연도별 출판량, 연평균 성장률, 추세선을 분석(RQ1-1) 75
    • (2) 국가・기관별 생산성 분석(RQ1-2) 75
    • (3) 학술지 분포 분석(RQ1-3) 76
    • 6) 토픽 모델링(RQ2-1) 77
    • (1) 분석 방법 77
    • (2) 최적 토픽 수의 결정 77
    • (3) 모델 학습 파라미터 설정 78
    • (4) 시각화 분석 78
    • (5) 수면 하위코퍼스에 대한 추가 분석 절차 78
    • 7) 네트워크 분석(RQ2-2, RQ2-3) 79
    • (1) 저자 공저 네트워크 분석(RQ2-3) 79
    • (2) 키워드 동시출현 네트워크 분석(RQ2-2) 80
    • (3) 분석 도구 81
    • 3. 메타분석 방법 82
    • 1) 문헌 검색 전략 82
    • (1) 검색 데이터베이스 82
    • (2) 검색 전략(이중 검색) 82
    • (3) 검색식 83
    • (4) 검색 기간 83
    • 2) 선정 및 제외 기준(PICOS) 84
    • (1) 연구 대상(P) 84
    • (2) 중재(I) 84
    • (3) 비교군(C) 84
    • (4) 결과(O) 85
    • (5) 연구 설계(S) 85
    • (6) 제외 기준 85
    • 3) 문헌 선정 과정 86
    • (1) 1단계: 제목 및 초록 선별 86
    • (2) 2단계: 전문 검토 86
    • (3) PRISMA 흐름도 86
    • 4) 자료 추출 87
    • (1) 추출 항목 87
    • (2) 추출 과정 87
    • 5) 연구의 질 평가 88
    • (1) 평가 도구 88
    • (2) 평가 영역 88
    • (3) 판정 기준 88
    • (4) 평가 과정 88
    • 6) 통계 분석 89
    • (1) 효과크기 산출(RQ3, H1) 89
    • (2) 전체 효과크기 추정(Random-effects model) 90
    • (3) 이질성 분석 92
    • (4) 하위집단 분석(RQ4, H2, H3) 94
    • (5) 메타회귀분석(RQ5, H4) 95
    • (6) 민감도 분석 및 영향력 진단(RQ6-1, RQ6-3, H5) 96
    • (7) 출판편향 평가(RQ6-2) 98
    • (8) 통계 소프트웨어 및 패키지 99
    • 4. 윤리적 고려사항 100
    • Ⅳ. 연구 결과 101
    • 1. 계량서지분석 결과(RQ1, RQ2) 101
    • 1) 뉴로피드백 연구의 전반적 동향 (RQ1) 102
    • (1) 연도별 출판 추세 및 성장률(RQ1-1) 103
    • (2) 연평균 복합성장률(CAGR) 분석 105
    • (3) 회귀모형 적합도 비교 106
    • 2) 국가・기관 생산성 및 국제협력(RQ1-2) 107
    • (1) 국가별 생산성 107
    • (2) 권역별 분포 및 한국 위치 108
    • (3) 기관별 생산성 110
    • (4) 국제 협력 현황 112
    • 3) 학술지 구조(RQ1-3) 113
    • (1) Bradford 법칙 기반 학술지 분포(Zone 분포) 113
    • (2) 핵심 학술지(Zone 1) 분석 114
    • 4) 저자 및 키워드 네트워크 구조(RQ1-4) 115
    • (1) 저자별 출판 분포 115
    • (2) Lotka 법칙 적합 및 모수 117
    • (3) 공저 네트워크 지표 118
    • (4) 커뮤니티 구조 119
    • (5) 중심성 상위 저자 120
    • (6) 키워드 동시출현 네트워크 121
    • (7) 중심 키워드 분석 123
    • (8) 키워드 주제 분류 124
    • 5) 주요 연구 주제와 지식 구조(RQ2) 126
    • (1) 토픽 모델링 결과(RQ2-1) 126
    • (2) 토픽별 키워드 네트워크 커뮤니티 분석 130
    • (3) 토픽별 시간적 변화 및 분포 특성(RQ2-2) 132
    • 6) 수면 하위코퍼스 분석 137
    • (1) 필터링 프로세스 개요 137
    • (2) 1단계: 핵심 수면 키워드 필터링 137
    • (3) 2단계: 인지 훈련 전용 연구 제외 138
    • (4) 3단계: 제목 및 타당화된 척도 검증 138
    • (5) 필터링 효과 139
    • (6) 하위코퍼스 기본 특성 139
    • (7) 소 결 140
    • 7) 소 결 141
    • 2. 메타분석 결과(RQ3~RQ6) 142
    • 1) 문헌 선정 결과 142
    • (1) 문헌 검색 및 선정 과정 142
    • (2) 포함된 연구의 특성 146
    • (3) 연구의 질 평가 결과 150
    • 2) 전체 효과크기(RQ3, H1 검증) 153
    • (1) 주관적 수면 지표 전체 효과(RQ3-1, RQ3-2) 153
    • (2) 객관적 수면 지표 (RQ3-3) 155
    • (3) 이질성 분석 156
    • (4) 전체 효과크기 요약 156
    • (5) 가설 검증 결과(H1) 158
    • 3) 하위집단 분석(RQ4, H2, H3 검증) 159
    • (1) 프로토콜 유형별 효과(RQ4-1, H2 검증) 161
    • (2) 대조군 유형별 효과(RQ4-2, RQ4-3, H3 검증) 163
    • (3) 결과 지표별 효과 비교(RQ4-4) 165
    • 4) 메타회귀분석(RQ5, H4 검증) 166
    • (1) 용량 지표의 조절 효과(RQ5-1, H4 검증) 166
    • (2) 표본 특성의 조절 효과(RQ5-2) 167
    • (3) 다변량 메타회귀(탐색적) 167
    • (4) 메타회귀분석 결과 해석 167
    • 5) 민감도 분석 및 영향력 진단(RQ6-1, RQ6-3, H5 검증) 168
    • (1) Leave-one-out 분석 168
    • (2) 연구의 질별 분석(RQ6-3) 170
    • (3) 영향력 진단 171
    • (4) H5 검증 결과 171
    • 6) 출판편향 평가(RQ6-2) 172
    • (1) Funnel plot 172
    • (2) Egger의 회귀 검정 175
    • (3) Trim-and-fill method 175
    • (4) Fail-safe N 175
    • (5) p-curve analysis 176
    • (6) 출판편향 종합 평가 176
    • 7) 메타분석 결과 종합 178
    • (1) 연구 질문에 대한 답변 178
    • (2) 가설 검증 결과 요약 179
    • (3) 주요 발견 요약 180
    • (4) 전체 효과크기 및 가설 검증 종합표 181
    • (5) 연구의 한계 182
    • (6) 향후 연구 제언 183
    • (7) 결 론 184
    • Ⅴ. 고 찰 185
    • 1. 연구 결과의 종합적 해석 185
    • 2. 계량서지분석과 메타분석 결과의 통합 187
    • 1) 계량서지분석과 메타분석 결과의 통합적 의미 187
    • 2) 학문적 관심과 임상 근거 간의 관계 190
    • 3. 불면증 중재 효과에 대한 해석의 정교화 191
    • 1) 주관적 수면 지표 개선의 임상적 의미 191
    • 2) 객관적 수면 지표에서 효과가 제한적으로 나타난 이유 192
    • 3) 주관적–객관적 지표 불일치의 해석과 함의 193
    • 4) 프로토콜・대조군・용량 분석에 대한 해석 194
    • (1) 프로토콜 유형별 효과 해석 194
    • (2) 대조군 유형과 특정 치료 효과의 구분 195
    • (3) 훈련 용량과 효과크기의 관계 196
    • 5) 이론적 기여 197
    • 6) 임상적 함의 199
    • 7) 방법론적 의의와 연구의 제한점 201
    • 8) 향후 연구 제언 203
    • Ⅵ. 결 론 205
    • 1. 연구의 주요 결과 요약 205
    • 1) 계량서지분석 주요 결과 205
    • 2) 메타분석 주요 결과 206
    • 2. 연구의 학술적 기여와 가설 검증 요약 207
    • 1) 학술적 기여 207
    • 2) 가설 검증 결과 요약 207
    • 3. 임상적 결론 208
    • 4. 임상 적용상의 고려 208
    • 5. 연구의 한계 209
    • 6. 향후 연구 과제와 최종 결론 209
    • 참 고 문 헌 211
    • 영 문 초 록 229
    • 감 사 의 글 234
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