An Analysis of Menstrual Symptoms, Menstrual Attitudes, Physical Stress and Psychological Stress According to the Menstrual Cycle Phase.

Background: Women undergo an array of menstrual symptoms, depending on the menstrual cycle period. This study aimed to gain a more objective understanding of the impact of menstruation by examining differences in menstrual symptoms, menstrual attitude, physical stress, and psychological stress across the menstrual cycle. Methods: This study was conducted from Apr to Jun 2021 in the Gyeonggi Province of Korea. Women aged ≥20 yr were divided into premenstrual (n=17), menstrual (n=8), and postmenstrual periods (n=23). Menstrual symptoms and menstrual attitudes were assessed using questionnaires. Quantitative electroencephalography was used to assess the physical stress indices (left and right), and the psychological stress indices (left and right), with brainwave parameters quantified by frequency series power spectrum analysis. Data were compared using the non-parametric tests. Results: More menstrual symptoms were experienced in the menstrual period than in the premenstrual period (Z=2.16, P=.031). Menstrual attitudes did not significantly differ among menstrual periods (Z=1.20, P=.231). Physical stress indices were high (≥10 µV) throughout the menstrual cycle and there were significant differences among the three periods (left: χ2=4.00, P=.035, right: χ2=5.78, P=.046). Psychological stress indices were >1 µV during the premenstrual and menstrual periods. Conclusion: Women experience more severe and diverse menstrual symptoms in the menstrual period than in other periods. Objective investigations are needed to inform an effective approach for addressing negative menstruation-related experiences.

Quantitative EEG (QEEG) Analysis of Emotional Interaction between Abusers and Victims in Intimate Partner Violence: A Pilot Study.

BACKGROUND: The perpetrators of intimate partner violence (IPV) and their victims have different emotional states. Abusers typically have problems associated with low self-esteem, low self-awareness, violence, anger, and communication, whereas victims experience mental distress and physical pain. The emotions surrounding IPV for both abuser and victim are key influences on their behavior and their relationship. METHODS: The objective of this pilot study was to examine emotional and psychological interactions between IPV abusers and victims using quantified electroencephalogram (QEEG). Two abuser-victim case couples and one non-abusive control couple were recruited from the Mental Image Recovery Program for domestic violence victims in Seoul, South Korea, from 7-30 June 2017. Data collection and analysis were conducted using BrainMaster and NeuroGuide. The emotional pattern characteristics between abuser and victim were examined and compared to those of the non-abusive couple. RESULTS: Emotional states and reaction patterns were different for the non-abusive and IPV couples. Strong delta, theta, and beta waves in the right frontal and left prefrontal lobes were observed in IPV case subjects. This indicated emotional conflict, anger, and a communication block or impaired communication between abuser and victim. CONCLUSIONS: Our study findings suggest brainwave control training via neurofeedback could be a possible therapy in managing emotional and communication problems related to IPV.

Correlates of the Mental Fitness of Female High School Freshmen: Focus on Multidimensional Empathy and Brain Function.

We examined the association between multidimensional empathy, brain function, and mental fitness and identified correlates of mental fitness. In total, 146 female high school freshmen from a South Korean school participated in this cross-sectional study. Data were collected from March to April 2019, using a self-report questionnaire and quantitative electro-encephalographic data (QEEG). Instruments included the Interpersonal Reactivity Index and the Mental Fitness Scale, to access multidimensional empathy and mental fitness. Prefrontal cortex brain function was assessed with the brain quotient measure from the QEEG during free time after school. Data were analyzed using descriptive statistics, Pearson's correlation coefficient, and multiple regression analysis. Mental fitness had statistically significant relationships with multidimensional empathy (r = 0.36, p < 0.001) and brain quotient (r = 0.23, p = 0.005). Demographic factors affecting mental fitness included satisfaction with school life (ß = 0.23, p = 0.001) and economic status (ß = 0.17, p = 0.024). Factors from the subscales of multidimensional empathy included perspective taking (ß = 0.26, p = 0.001), fantasy (ß = 0.22, p = 0.004), and personal distress (ß = -0.19, p = 0.010); and the brain function factor was brain quotient (ß = 0.14, p = 0.038). The explanatory power of the model was 49.4% (F = 14.44, p < 0.001). There is a need for a concrete and objective understanding of mental fitness in adolescents to develop intervention programs for freshmen with various maladaptation problems.

Meditation-based clinical study to determine the correlation of quantitative electroencephalogram (qEEG) and 24-hour EEG activity.

BACKGROUND: The heart continuously transmits information to the cerebrum during each pulse, and influences information processing such as perception, cognition, and emotion, which are processed in the cerebrum. This is the basis for the theory of oriental medicine widely used in psychiatric medicine and clinical practice, so-called Simjushinji (heart and brain) theory, that the heart controls the mind. The present study aims to analyze the correlation between heart and brain function by 24-hour active electrocardiogram and quantitative electroencephalogram (EEG) measurement under meditation. METHODS: This randomized, controlled, assessor-blinded, 2-armed, parallel, multicenter clinical trial will analyze a total of 50 subjects, including 25 each for the test group and the active control group. Subjects will be randomly allocated to the test group (performing resource mindfulness) and the control group (performing stress mindfulness) in a 1:1 ratio. The clinical trial consists of 3 stages. The first and third stages are stable states. The second stage is divided into the test and active comparator groups. Quantitative EEG (qEEG) measurements at stages 1 and 3 will be recorded for 10 minutes; measurements at stage 2 will be recorded for 20 minutes with the eyes closed. The 24-hour Holter Monitoring and heart rate variability will be evaluated at each stage. Before the beginning of stage 3, subjects will complete the questionnaires. The primary outcome will be analyzed by independent t tests of both groups. DISCUSSION: Scientific studies based on clinical epistemology are expected to serve as a basis for sustainable medical services in the field of psychiatric medicine in Korea. HRV, blood pressure index, and biometric index in qEEG, as determined by 24-hour Holter monitoring, will complement quantitative biomarkers and be useful in various fields.