Medical Help-Seeking Strategies for Perinatal Women With Obstetric and Mental Health Problems and Changes in Medical Decision Making Based on Online Health Information: Path Analysis

BACKGROUND: Previous studies have revealed that most pregnant women rarely discuss informal information found on the internet with health professionals and have frequently expressed concerns for medical experts' reactions to the online information they shared, as well as the lack of time to consult the medical experts in general. To date, little information is available on the effect of individual differences in utilizing medical help-seeking strategies on their medical decisions during the perinatal period. OBJECTIVE: The objectives of this study were (1) to determine associations among perinatal women's medical help-seeking strategies, changes in medical decision making, and online health information utilization with a focus on the mediating effect of self-efficacy in perinatal health literacy on the intent to consult health professionals, and (2) to clarify these associations in perinatal women with two different medical problems: obstetric and mental health. METHODS: A total of 164 perinatal women aged 24 to 47 years (mean 34.64, SD 3.80) repeatedly completed the Problem Solving in Medicine and Online Health Information Utilization questionnaires to examine the moderating effect of two types of medical problems on their decision-making processes. To validate the hypothesized relationships in the proposed conceptual model encompassing obstetric and mental health problem-solving models, path analyses were performed. RESULTS: This study found that some perinatal women, who use an online informal medical help-seeking (OIMH) strategy, would be more likely to change their medical decisions based only on internet-based information without consulting health professionals (P<.001), compared to other women using different medical help-seeking strategies. Particularly, this concern is significantly prevalent when encountering obstetric problems during the perinatal period (obstetric problem-solving: P<.001; mental health problem-solving: P=.02). Furthermore, perinatal women with mental health issues using the OIMH strategy showed a significant difference in intent to consult health professionals based on online health information when the medical problem they had to solve was different (obstetric problem-solving: P=.94; mental health problem-solving: P=.003). CONCLUSIONS: Despite the positive mediating effects of perinatal women's enhanced health literacy on the intent to discuss personal medical issues with health professionals based on online health information, the strategy used is of fundamental importance for understanding their help-seeking and decision-making processes during the perinatal period. Beyond a short consultation to steer patients quickly and authoritatively towards an obstetric doctor's choice of action, it is recommended in this study that obstetricians attempt to provide their patients with needed context for the information found online. To fully explain this information with an open mind, they should actively develop or support information and communications technology (ICT)-based health information services.ope

Response Time as an Implicit Self-Schema Indicator for Depression Among Undergraduate Students: Preliminary Findings From a Mobile App-Based Depression Assessment

BACKGROUND: Response times to depressive symptom items in a mobile-based depression screening instrument has potential as an implicit self-schema indicator for depression but has yet to be determined; the instrument was designed to readily record depressive symptoms experienced on a daily basis. In this study, the well-validated Korean version of the Center for Epidemiologic Studies Depression Scale-Revised (K-CESD-R) was adopted. OBJECTIVE: The purpose of this study was to investigate the relationship between depression severity (ie, explicit measure: total K-CESD-R Mobile scores) and the latent trait of interest in schematic self-referent processing of depressive symptom items (ie, implicit measure: response times to items in the K-CESD-R Mobile scale). The purpose was to investigate this relationship among undergraduate students who had never been diagnosed with, but were at risk for, major depressive disorder (MDD) or comorbid MDD with other neurological or psychiatric disorders. METHODS: A total of 70 participants-36 males (51%) and 34 females (49%)-aged 19-29 years (mean 22.66, SD 2.11), were asked to complete both mobile and standard K-CESD-R assessments via their own mobile phones. The mobile K-CESD-R sessions (binary scale: yes or no) were administered on a daily basis for 2 weeks. The standard K-CESD-R assessment (5-point scale) was administered on the final day of the 2-week study period; the assessment was delivered via text message, including a link to the survey, directly to participants' mobile phones. RESULTS: A total of 5 participants were excluded from data analysis. The result of polynomial regression analysis showed that the relationship between total K-CESD-R Mobile scores and the reaction times to the depressive symptom items was better explained by a quadratic trend-F (2, 62)=21.16, P<.001, R2=.41-than by a linear trend-F (1, 63)=25.43, P<.001, R2=.29. It was further revealed that the K-CESD-R Mobile app had excellent internal consistency (Cronbach alpha=.94); at least moderate concurrent validity with other depression scales, such as the Korean version of the Quick Inventory for Depressive Symptomatology-Self Report (ρ=.38, P=.002) and the Patient Health Questionnaire-9 (ρ=.48, P<.001); a high adherence rate for all participants (65/70, 93%); and a high follow-up rate for 10 participants whose mobile or standard K-CESD-R score was 13 or greater (8/10, 80%). CONCLUSIONS: As hypothesized, based on a self-schema model for depression that represented both item and person characteristics, the inverted U-shaped relationship between the explicit and implicit self-schema measures for depression showed the potential of an organizational breakdown; this also showed the potential for a subsequent return to efficient processing of schema-consistent information along a continuum, ranging from nondepression through mild depression to severe depression. Further, it is expected that the updated K-CESD-R Mobile app can play an important role in encouraging people at risk for depression to seek professional follow-up for mental health care.ope

The Relationship Between the Big Five Personality Traits and the Theory of Planned Behavior in Using Mindfulness Mobile Apps: Cross-sectional Survey

Background: Mindfulness has emerged as a promising approach toward improving mental health. Interest in mindfulness mobile app services has also increased in recent years. Understanding the determinants of mindfulness behavior is essential to predict people's utilization of mindfulness mobile apps and beneficial for developing and implementing relevant intervention strategies. Nevertheless, little has been done to determine the predictors of mindfulness behavior. Objective: This study investigates the association between the Big Five personality traits and the Theory of Planned Behavior (TPB) variables in the context of using mindfulness mobile apps to explore the potential indirect effects of conscientiousness and neuroticism on people's behavioral intention for mindfulness, mediated by their attitude toward mindfulness, subjective norm about mindfulness, and perceived behavior control over mindfulness. Methods: The authors conducted an online, cross-sectional survey in December 2021. Structural equation modeling was conducted to evaluate the overall model fit and test possible linkages among conscientiousness, neuroticism, attitude toward mindfulness, subjective norm about mindfulness, perceived behavior control over mindfulness, and behavioral intention for mindfulness. Bootstrapping mediation analyses were also conducted to test the potential mediating effect in the model. Results: A total of 297 Korean participants' responses (153 males and 144 females) were analyzed. The proposed model had a good fit. Conscientiousness was correlated with attitude toward mindfulness (β=.384, P<.001), subjective norm about mindfulness (β=.249, P<.001), and perceived behavior control over mindfulness (β=.443, P<.001). Neuroticism was not correlated with attitude toward mindfulness (β=-.072, P=.28), but was correlated with subjective norm about mindfulness (β=.217, P=.003) and perceived behavior control over mindfulness (β=-.235, P<.001). Attitude toward mindfulness (β=.508, P<.001), subjective norm about mindfulness (β=.132, P=.01), and perceived behavior control over mindfulness (β=.540, P<.001) were separately correlated with behavioral intention for mindfulness. Conscientiousness was not directly correlated with behavioral intention for mindfulness (β=-.082, P=.27), whereas neuroticism was directly correlated with behavioral intention for mindfulness (β=.194, P=.001). Conscientiousness was indirectly linked with behavioral intention for mindfulness through attitude toward mindfulness (B=0.171, 95% CI 0.103-0.251) and perceived behavior control over mindfulness (B=0.198, 95% CI 0.132-0.273) but not through subjective norm about mindfulness (B=0.023, 95% CI -0.002 to 0.060). Neuroticism was indirectly linked with behavioral intention for mindfulness via perceived behavior control over mindfulness (B=-0.138, 95% CI -0.197 to -0.088) but not via subjective norm about mindfulness (B=0.021, 95% CI -0.002 to 0.059). Conclusions: The results show that the integration of the Big Five personality traits and TPB constructs is useful in predicting the use of mindfulness mobile apps. Focusing on conscientiousness and neuroticism in developing information dissemination and implementation strategies for enhancing mindfulness behavior using mobile apps may lead to the successful promotion of mindfulness mobile apps and adherence to mindfulness techniques.ope

Discrepancies of Implicit and Explicit Self-Esteem as Predictors of Attributional Bias and Paranoia

OBJECTIVE: The current study aimed to examine the association of implicit self-esteem, explicit self-esteem and their interaction with paranoia and attributional bias. The relationship of the size and the direction of the discrepancy between implicit and explicit self-esteem with paranoia and attributional bias was examined. METHODS: A total of 128 female college students participated. We administered the Implicit Association Test to assess implicit self-esteem, and the Rosenberg Self-Esteem Scale to measure explicit self-esteem. Paranoia Scale was used, and the attributional bias was assessed using the Ambiguous Intentions Hostility Questionnaire. RESULTS: Results showed that explicit but not implicit self-esteem was negatively associated with paranoia, blame bias and hostility perception bias in ambiguous situations. The interaction of implicit and explicit self-esteem was associated with hostility perception in ambiguous situations. As for the discrepancy, the size of the discrepancy between implicit and explicit self-esteem was positively associated with hostility perception in ambiguous situations. Moreover, the direction of the discrepancy was specifically relevant: damaged self-esteem (high implicit and low explicit self-esteem) was associated with increased levels of paranoia, blame bias and hostility perception in ambiguous situations. CONCLUSION: These findings provide new insights into the role of the implicit and explicit self-esteem in attributional bias and paranoia and point to damaged self-esteem as a possible vulnerability marker for illogical attribution of blaming others and perceiving hostility in social situations.ope

Development and evaluation of a mobile-optimized daily self-rating depression screening app: A preliminary study

The aims of this study were to design a mobile app that would record daily self-reported Korean version of the Center for Epidemiologic Studies Depression Scale-Revised (K-CESD-R) ratings in a "Yes" or "No" format, develop two different algorithms for converting mobile K-CESD-R scores in a binary format into scores in a 5-point response format, and determine which algorithm would be more appropriately applied to the newly developed app. Algorithm (A) was designed to improve the scoring system of the 2-week delayed retrospective recall-based original K-CESD-R scale, and algorithm (B) was designed to further refine the scoring of the 24-hour delayed prospective recall-based mobile K-CESD-R scale applied with algorithm (A). To calculate total mobile K-CESD-R scores, each algorithm applied certain cut-off criteria for a 5-point scale with different inter-point intervals, defined by the ratio of the total number of times that users responded "Yes" to each item to the number of days that users reported daily depressive symptom ratings during the 2-week study period. Twenty participants were asked to complete a K-CESD-R Mobile assessment daily for 2 weeks and an original K-CESD-R assessment delivered to their e-mail accounts at the end of the 2-week study period. There was a significant difference between original and mobile algorithm (B) scores but not between original and mobile algorithm (A) scores. Of the 20 participants, 4 scored at or above the cut-off criterion (≥13) on either the original K-CESD-R (n = 4) or the mobile K-CESD-R converted with algorithm (A) (n = 3) or algorithm (B) (n = 1). However, all participants were assessed as being below threshold for a diagnosis of a mental disorder during a clinician-administered diagnostic interview. Therefore, the K-CESD-R Mobile app using algorithm (B) could be a more potential candidate for a depression screening tool than the K-CESD-R Mobile app using algorithm (A).ope

Effect of home-based transcranial direct current stimulation (tDCS) on cognitive function in patients with mild cognitive impairment: a study protocol for a randomized, double-blind, cross-over study

BACKGROUND: The possible effect of transcranial direct current stimulation (tDCS) in improving cognitive function is clear from studies involving pre-dementia stage mild cognitive impairment (MCI). However, the application of tDCS in actual clinical practice entails repeated hospital visits almost every day for treatment. The objective of this study is to confirm the possibility of self-application of tDCS at home by elderly patients with declined cognitive function and the significant clinical effect of tDCS administered at home. METHODS/DESIGN: This study will be conducted in 20 elderly people aged 60 to 80 years with complaints of subjective memory impairment while maintaining general functions with limited activities of daily living. This study involves a cross-over design that will include 2-week active or sham stimulation of both dorsolateral prefrontal cortexes (left, anode; right, cathode) randomly with a 2-week wash-out phase. Changes in cognitive function will be evaluated using visual recognition tasks and neuropsychological tests. In this study, tDCS will be carried out by each patient at his/her home and its safety and suitability will be evaluated. DISCUSSION: In this study, patients will apply a portable tDCS, developed for home use, for more than 2 weeks. Such studies can contribute to the use of tDCS as a realistic therapy. In addition, the utility of home-based tDCS will be confirmed by application of tDCS at home by the elderly with declined cognitive function. Furthermore, confirmation of tDCS as a significant therapeutic method can facilitate treatment of Alzheimer's dementia at an early stage, including MCI. TRIAL REGISTRATION: Clinical Research Information Service (CRIS), KCT0002721 . Registered on 9 March 2018.ope

(A) study on Tendency of Korean National Ballet in Hong

Ballet of our country was introduced by influence of new cultures at civilized time of modern dance. And then in spite of adversity of the times some dancers made steady efforts for settlement of ballet, hance ballet of today freed itself from form of beginning and accomplished a full-scale public performance with aspect of artistic activity. Through war of 6.25 and time of liberation from 1940&amp;apos;s to 1950&amp;apos;s the community of dance took a growing interest in ours, after 1970&amp;apos;s experimental works for realization of national ballet began to show. What Realization of national ballet means is not following and conservation of western dance but efforts for recognization of value of ours with these and connection value of ours with these. Realization of national ballet began to rise its head with a full-scale creative works after 1980&amp;apos;s and its representative was Hong Jung-Hee who was a pioneer of ballet of university and worked for settlement of Korean ballet. Hong Jung-Hee performed creative works from the end of 1950&amp;apos;s and established &amp;quot;Ballet Blanc&amp;quot; with fifteen times personal performance and &amp;quot;The Society for the Research of Korean Ballet&amp;quot;. She tried to strive for diversity with the triangular position of ballet through performances of the inside and outside of the country and the provincial performance. Also she got rid of differance of communities and made effors for popularization through performances for development of community. Also she actively partipated in activity of social service with performance for neglected person for example an old people&amp;apos;s home, an orphan&amp;apos;s home, a crippled child and a mentally handicapped child. She choreographed about ninty works. &amp;quot;Korea Fantasy&amp;quot;, &amp;quot;Chai-Young&amp;quot;, &amp;quot;Won-Wha&amp;quot;, &amp;quot;The Elegy&amp;quot;, &amp;quot;Deep Inside&amp;quot;, &amp;quot;Drowing of the Longevity&amp;quot; and &amp;quot;Flame of the Green&amp;quot; of them all were choreographed by basis on tendency of national ballet, and they were introduced at inside of country, USA, France and Russia. Hance they cotributed to internationalization of Korean ballet. Therefore, the purpose of this syudy examines tendency of Korean national Ballet and then suggests tendency and character for activity of Korean national creative ballet. For this research first, researcher understands background of emergence and general character of national ballet through history of Korean ballet. Second, researcher tried to understand her choreographic tendency through examination of Hong Jung-Hee&amp;apos;s life and contribution and third, researcher educes tendency of Korean national ballet through analization in aspect of thema, music, movement and costume of &amp;quot;Korea Fantasy&amp;quot; and &amp;quot;Drowing of the Longevity&amp;quot;, representative works of Hong Jung-Hi&amp;apos;s main works. As a result, the tendency and the character of national ballet are following. First, in aspect of thema, she selected our traditional tale and folktale or national history and social background as a material, hence the thema in national ballet could be easy to approach audiance&amp;apos;s emotion and could adress content of works effectively. Second, in aspectof music, she used music representing Korean music, not a stringed instrument but percussion instrument and oral sound, and music composed by basis on our country&amp;apos;s rhythm, Gokgeri Rhythem and rhythm of Korean music mode, hence the music in national ballet embodied Korean thing. Third, in aspect movement, she applied movement of Korean dance on motion of arm and leg, hance she pursued variety with development of characteristic motion. Forth, in aspect costumn, she depicted Korean flavor with Buddist costumn and image of Wha-Rang, also she showed Korean traditional beautiful speciality by application of curved line in Korean dress&amp;apos;s jacket and fold of Korean dress&amp;apos;s skirt. Like above, Hong Jung-hee&amp;apos;s trial of creative works settleed our special ballet, influenced Korean material, varified development of movement, and made establishment of artistic view about ours, Korean ballet in world and foundation of Korean ballet.;우리 나라에서의 발레는 20세기초 근대무용의 개화기에 신문화들의 영향으로 소개된 후 시대적인 역경에도 불구하고 발레의 정착을 위해 꾸준히 노력해 온 몇몇의 무용인들에 의해 발전되었다. 이로 인해 오늘날의 발레는 초기적 형태에서 벗어나 예술적 활동으로서의 면모를 갖추고 본격적인 공연활동을 이루고 있다. 40년대와 50년대의 해방과 함께 6.25를 거치면서 무용계에서는 우리 것에 대한 관심을 보이기 시작했고, 60년대 이후에서야 민족발레의 구현을 위한 실험작들이 선보이기 시작했다. 민족발레의 구현은 단지 서구 발레의 답습, 보전만 할 것이 아니라 이를 토대로 우리 것에 대한 가치를 인정하고 그것과 접목시켜 수용하려는 노력의 자세로서 나타난 것이다. 이것은 80년대 이후부터 본격적인 창작작업으로 발레에 대두되기 시작하였으며, 그 대표적인 인물로는 대학발레의 선구자이며 한국 발레의 정착에 뜻을 두고 작품활동을 해온 홍정희를 들 수 있다. 50년대 말부터 창작작업을 지속적으로 해온 홍정희는 15회의 개인공연을 비롯해「발레블랑」과 「한국발레연구회」를 창설하여 수많은 국내외 공연을 함으로써 발레의 정립과 함께 창작의 다양화를 추구하였으며, 특히 지역사회개발을 위한 지방공연을 통해 지역간의 낙차 해소 및 발레의 대중화를 위해 노력하였다. 또한 일찍이 사회로부터 소외당하고 있는 사람들 즉 양로원, 고아원 그리고 신체장애자들을 위해 자선 공연을 가지는 등 사회봉사활동에도 적극적으로 참여하였다. 이러한 그녀는 90여편에 가까운 창작작품을 안무하였고, 그 중에서도「코리아 환상곡」, 「처용」, 「원화」, 「아가」, 「심저」, 「장생도」, 「녹색의 불길」 등과 같은 작품은 민족발레의 성향을 토대로 안무된 작품으로 국내에서뿐만 아니라 프랑스와 미국, 소련 등에도 성공적으로 소개됨으로써 한국 발레의 위상을 국제화시키는데 크게 기여하였다. 따라서 본 연구는 홍정희의 작품활동을 통해 나타난 한국민족발레의 성향을 살펴봄으로써 한국 민족적 창작 발레의 활성화를 위한 안무적 성향 및 그 특성을 고찰, 제시하는데 목적이 있다. 이를 위해서는 먼저 한국 발레의 발전사를 살펴봄으로써 민족발레가 나타나게 된 배경과 일반적인 특성을 파악하고자 하였고, 홍정희의 생애와 업적을 통한 작품활동을 살펴봄으로써 그녀의 안무 성향을 고찰해 보았다. 그리고 홍정희의 대표작「코리아 환상곡」과 「장생도」를 주제, 음악, 움직임, 의상 측면에서 분석함으로써 한국민족발레의 성향을 추출하였다 그 결과 한국민족발레의 성향 및 그 특성은 다음과 같다. 첫째, 주제면에서는 우리의 전통적인 설화나 민화 또는 우리 민족이 겪어온 역사와 사회적 배경을 소재로 택함으로써 관객의 정서에 쉽게 접근하고 더 효과적으로 작품 내용을 전달할 수 있다는 점. 둘째, 음악면에서는 우리 문화를 대변할 수 있는 곡, 즉 현악기의 사용을 억제하고 사물의 주조를 이룬 타악기와 구음, 국악가요풍의 음율과 굿거리 장단 등의 우리 가락을 기초로 한 음악을 사용하여 보다 한국적인 것을 구체화 할 수 있었다는 점. 셋째, 움직임면에서는 팔과 다리, 어깨 등의 동작에 독특한 한국적 춤사위를 적용하고, 탈춤 등 우리나라 고유의 민속무용 동작을 응용함으로써 캐릭터적인 동작의 개발 및 다양화를 추구할 수 있었다는 점. 넷째, 의상면에서는 한국 고유의 평상복, 궁정복, 승무복 또는 화랑복 등의 개성적 이미지를 살려 한복의 저고리의 곡선과 밑동 그리고 치마의 겹침을 응용함으로써 한국 고유의 미적 특수성을 효과적으로 작품 주제에 맞게 표현하였다는 점으로 나타났다. 이상과 같이 홍정희의 다각적 창작작업을 통한 민족발레의 구현은 우리의 것을 찾고, 만들고자 하는 그녀의 선구자적 또는 개척자적인 노력과 사명감으로써 이는 우리의 독창적인 발레를 정착시켰으며 한국적 소재 및 동작 개발의 다양화에 지대한 영향을 주었다. 또한 한국 특유의 예술관 확립과 더불어 세계 속에서의 한국 발레의 위치를 구축하고 그 토대를 만들어 놓음으로써 그녀가 한국 발레에 미친 영향 및 그 예술적 가치는 높다고 할 수 있겠다.목차 = ⅲ 논문개요 = ⅵ Ⅰ. 서론 = 1 A. 연구의 필요성 및 목적 = 1 B. 연구의 내용 및 방법 = 2 C. 연구의 제한점 = 4 Ⅱ. 이론적 배경 = 5 A. 한국 발레 발전의 사적 배경 = 5 B. 민족발레의 발생 및 개념 = 19 Ⅲ. 홍정희의 생애와 업적 및 작품활동 = 27 A. 홍정희의 생애와 업적 = 27 B. 홍정희의 작품활동 = 38 1. 1958 - 1970(제1기) = 38 2. 1970 - 1980(제2기) = 39 3. 1980 - 1997(제3기) = 41 Ⅳ. 주요작품에 나타난 한국민족발레의 성향 분석 = 53 A. 코리아 환상곡 = 53 1. 주제 = 53 2. 음악과 움직임 = 55 3. 무대미술 및 의상 = 58 B. 장생도 = 62 1. 주제 = 62 2. 음악과 움직임 = 64 3. 무대미술 및 의상 = 69 Ⅴ. 결론 = 74 참고문헌 = 77 ABSTRACT = 82 부록 = 8

An Improved Attack Algorithm on NTRU Using Modified Reuse Technique

Security analysis on the NTRUEncrypt public key cryptosystem is mainly based on the hardness of lattice problems in a special form of lattices, called Coppersmith-Shamir basis. In this thesis, we present our Coppersmith-Shamir basis customized lattice reduction algorithm to find a short vector which can be work as a decryption key. Since Coppersmith-Shamir basis has ideal lattice like structure in the bottom part, we applied our Simplified Reuse technique to that part and obtained the improved complexity compared to the LLL algorithm.;NTRUEncrypt라는 암호시스템에서의 안전성 분석은 쿠퍼스미스-샤미르라고 불리는 기저로 생성되는 래티스에서의 어려운 문제에 기반을 두고 있다. 이 논문에서는 쿠퍼스미스-샤미르 기저에 맞춰진 lattice basis reduction 알고리즘을 제안하였다. 이 알고리즘은 쿠퍼스미스-샤미르 기저가 밑의 절반 부분에서 아이디얼 래티스 모양을 갖는 특성을 이용하여 Simplified Reuse technique을 적용하였고, 기존에 제안된 LLL 알고리즘보다 개선된 복잡도를 얻게 되었다.1 Introduction 1 2 Lattice 3 2.1 Lattice Problems 11 2.2 Ideal Lattice 12 3 The NTRUEncrypt Cryptosystem 15 3.1 The NTRU Public Key Cryptosystem 16 3.2 Mathematical Hard Problems Underlying NTRU 19 3.3 NTRU Key Recovery Problem as a Hard Problem in Lattice 22 4 Basis Reduction Algorithms 25 4.1 LLL Algorithm 28 4.2 LLL Algorithm for Ideal Lattice 36 5 Main Results 42 5.1 Overview 42 5.2 Our Algorithm 43 5.3 Comparison with LLL 46 5.4 NTRU Key Recovery Attack with Our Algorithm 50 6 Conclusion and Further Works 54 References 55 국문초록 5

우리나라 농민의 Chlorpyrifos 노출이 피부에 미치는 위해성 평가

학위논문(석사)--서울대학교 대학원 :환경보건학과 환경위생전공,2001.Maste

Involuntary Attention Restoration During Exposure to Mobile-Based 360° Virtual Nature in Healthy Adults With Different Levels of Restorative Experience: Event-Related Potential Study

BACKGROUND: With the global trend of urbanization, there are increasing reports of a possible association between decreased exposure to nature and increased occurrence of mental disorders. New 360° virtual reality (VR) technology using smartphones and portable VR glasses can overcome spatial and temporal limitations to help people deal with mental fatigue in everyday life. OBJECTIVE: On the basis of attention restoration theory (ART), this study aimed to investigate whether the amplitude of the mismatch negativity (MMN)/P3a complex could act as an event-related potential (ERP) biomarker of involuntary attention restoration during exposure to 360° virtual nature in healthy young adults with different levels of restorative VR experience. METHODS: A total of 40 healthy adults completed prequestionnaires on demographics and simulator sickness and postquestionnaires on simulator sickness and perceived restorativeness before and after exposure to virtual nature, respectively. During the VR exposure, brain activity was measured by electroencephalography as participants were asked to conduct a 2-tone passive auditory oddball task. RESULTS: The amplitude and latency of the MMN/P3a complex were compared between individuals reporting a highly restorative experience and those reporting a less restorative experience. Although viewing a virtual nature environment, the high restorative group (N=19) exhibited significantly reduced P3a amplitudes compared with the low restorative group (N=20; t38=2.57; P=.02; d=0.59). Particularly, a moderate but significant negative correlation was found between the self-reported restorativeness scores and the P3a amplitudes at the fronto-central region (r=-.38; P=.02). However, the latency of the MMN/P3a complex did not significantly differ between the 2 groups (auditory mismatch negativity: t38=-1.47; P=.15 and P3a: t38=-0.31; P=.76). CONCLUSIONS: Considering individuals' restorative experience, the amplitude of the fronto-central MMN/P3a complex can potentially be employed as a distinct ERP component of interest in involuntary attention restoration during virtual nature experience in healthy young adults. The findings for the 360° virtual nature experience seem to be consistent with those of previous ERP studies on the effects of meditation practice. This study extends the findings of previous ART and ERP studies of real-world meditation, restoration, and mental fatigue management into the virtual world created by mobile phone-based VR glasses and 360° video content.restrictio