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35 result(s) for "Tuominen, Jarno"
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Gyrocardiography: A New Non-invasive Monitoring Method for the Assessment of Cardiac Mechanics and the Estimation of Hemodynamic Variables
Gyrocardiography (GCG) is a new non-invasive technique for assessing heart motions by using a sensor of angular motion – gyroscope – attached to the skin of the chest. In this study, we conducted simultaneous recordings of electrocardiography (ECG), GCG, and echocardiography in a group of subjects consisting of nine healthy volunteer men. Annotation of underlying fiducial points in GCG is presented and compared to opening and closing points of heart valves measured by a pulse wave Doppler. Comparison between GCG and synchronized tissue Doppler imaging (TDI) data shows that the GCG signal is also capable of providing temporal information on the systolic and early diastolic peak velocities of the myocardium. Furthermore, time intervals from the ECG Q-wave to the maximum of the integrated GCG (angular displacement) signal and maximal myocardial strain curves obtained by 3D speckle tracking are correlated. We see GCG as a promising mechanical cardiac monitoring tool that enables quantification of beat-by-beat dynamics of systolic time intervals (STI) related to hemodynamic variables and myocardial contractility.
Connection between the COVID-19 pandemic, war trauma reminders, perceived stress, loneliness, and PTSD in Bosnia and Herzegovina
In order to gain a better understanding of what happens during the COVID-19 pandemic to those who were previously traumatized, this study investigated perceived stress and severity of PTSD symptoms during the COVID-19 pandemic in people who experienced the 1992-1995 war in Bosnia and Herzegovina. It was also examined how reminders of past trauma and loneliness instigated by the COVID-19 crisis relate to current stress and PTSD symptoms. The sample consisted of 123 participants (74.8% women). Participants responded to assessments of sociodemographic characteristics, exposure to COVID-related information, concerns over disease, severity of exposure to war, frequency and intensity of war trauma reminders, loneliness, stress, and severity of PTSD symptoms. Data was collected as part of the COVIDiSTRESS Global Survey. Results showed that in a population previously exposed to the effects of war, severity of PTSD symptoms was positively related to perceived stress, and loneliness during the pandemic significantly mediated this relationship. Intensity of exposure to war trauma reminders was associated with higher levels of PTSD symptom severity. Higher severity of PTSD symptoms was related to forced displacement during the war. Moreover, higher stress was related to increased concerns over disease. To conclude, those exposed to war may be more affected by the global COVID-19 pandemic and preventive measures that accompany it, while loneliness mediates the effects of PTSD and perceived stress in this population.
Psychological distress and loneliness among European university students during the COVID-19 pandemic: a European survey
Background The COVID-19 pandemic and various consequent isolation, quarantine and curfew measures to curb the spread of the virus caused an increase in anxiety, depression, and loneliness among university students. The aim of this study was to assess the association between psychological distress and loneliness among university students in Europe during the COVID-19 pandemic. Methods This cross-sectional study was part of the COVIDiSTRESS global survey conducted during the first wave of COVID-19 pandemic in 2020. We evaluated for psychological stress and loneliness among university students in Europe ( n  = 11 231) using the Perceived Stress Scale (PSS-10) and the Loneliness Scale (SLON-3). The associations between the students’ psychological stress levels, loneliness, and perceived helplessness were analysed using chi-square test, ANOVA, t-test, and regression models. Results In total, 9737 university students (69.9% female) between 18 and 34 years (mean: 25.3 years from 13 European countries were included in the analyses. Most (89.6%) of the university students experienced moderate stress levels, with women reporting significantly more stress than men ( p  < 0.001). Differences in stress levels were also associated with geographic region, marital status, and age. Higher levels of psychological stress were associated with the students’ loneliness levels; loneliness accounted for 12.9% of the variance in stress. Perceived helplessness was associated with loneliness and gender and country of residence. Conclusions Majority of the university students in Europe experienced increased level of stress and loneliness during the first wave of COVID-19. Perceived helplessness was significantly associated with stress and correlated with gender, various loneliness factors and country of origin.
Decisions under uncertainty are more messy than they seem
Conviction Narrative Theory (CNT) is conceptually so multifaceted as to make critical evaluation difficult. It also omits one course of action: Active engagement with the world. Parsing the developmental and mechanistic processes within CNT would allow for a rigorous research programme to put the account under test. I propose a unifying account based on active inference.
Cardiac monitoring of dogs via smartphone mechanocardiography: a feasibility study
Background In the context of monitoring dogs, usually, accelerometers have been used to measure the dog’s movement activity. Here, we study another application of the accelerometers (and gyroscopes)—seismocardiography (SCG) and gyrocardiography (GCG)—to monitor the dog’s heart. Together, 3-axis SCG and 3-axis GCG constitute of 6-axis mechanocardiography (MCG), which is inbuilt to most modern smartphones. Thus, the objective of this study is to assess the feasibility of using a smartphone-only solution to studying dog’s heart. Methods A clinical trial (CT) was conducted at the University Small Animal Hospital, University of Helsinki, Finland. 14 dogs (3 breeds) including 18 measurements (about one half of all) where the dog’s status was such that it was still and not panting were further selected for the heart rate (HR) analysis (each signal with a duration of 1 min). The measurement device in the CT was a custom Holter monitor including synchronized 6-axis MCG and ECG. In addition, 16 dogs (9 breeds, one mixed-breed) were measured at home settings by the dog owners themselves using Sony Xperia Android smartphone sensor to further validate the applicability of the method. Results The developed algorithm was able to select 10 good-quality signals from the 18 CT measurements, and for 7 of these, the automated algorithm was able to detect HR with deviation below or equal to 5 bpm (compared to ECG). Further visual analysis verified that, for approximately half of the dogs, the signal quality at home environment was sufficient for HR extraction at least in some signal locations, while the motion artifacts due to dog’s movements are the main challenges of the method. Conclusion With improved data analysis techniques for managing noisy measurements, the proposed approach could be useful in home use. The advantage of the method is that it can operate as a stand-alone application without requiring any extra equipment (such as smart collar or ECG patch).
Segregated brain state during hypnosis
Abstract Can the brain be shifted into a different state using a simple social cue, as tests on highly hypnotizable subjects would suggest? Demonstrating an altered global brain state is difficult. Brain activation varies greatly during wakefulness and can be voluntarily influenced. We measured the complexity of electrophysiological response to transcranial magnetic stimulation in one ‘hypnotic virtuoso’. Such a measure produces a response arguably outside the subject’s voluntary control and has been proven adequate for discriminating conscious from unconscious brain states. We show that a single-word hypnotic induction robustly shifted global neural connectivity into a state where activity remained sustained but failed to ignite strong, coherent activity in frontoparietal cortices. Changes in perturbational complexity indicate a similar move towards a more segregated state. We interpret these findings to suggest a shift in the underlying state of the brain, likely moderating subsequent hypnotic responding.
Self-Control in Responsibility Enhancement and Criminal Rehabilitation
Ethicists have for the past 20 years debated the possibility of using neurointerventions to improve intelligence and even moral capacities, and thereby create a safer society. Contributing to a recent debate concerning neurointerventions in criminal rehabilitation, Nicole Vincent and Elizabeth Shaw have separately discussed the possibility of responsibility enhancement. In their ethical analyses, enhancing a convict’s capacity responsibility may be permissible. Both Vincent and Shaw consider self-control to be one of the constituent mental capacities of capacity responsibility. In this paper, we critically examine the promise of improving convicts’ capacity responsibility by neuroenhancements of self-control to see whether the special characteristics of the inmate population make a difference in the analyses. As improving self-control by means of neurointerventions seems plausible, we then ask whether it is or could be a justified measure in court rulings. We conclude that, even if there are cases in which neurointerventions were warranted in the context of the stated goals of the criminal court, i.e., decreasing recidivism and rehabilitating the offenders to the society, due to the range of individual variability in the constitution of self-control, the prescription of specific neurointerventions of self-control falls outside the scope of legitimate court rulings.
COVIDiSTRESS diverse dataset on psychological and behavioural outcomes one year into the COVID-19 pandemic
During the onset of the COVID-19 pandemic, the COVIDiSTRESS Consortium launched an open-access global survey to understand and improve individuals’ experiences related to the crisis. A year later, we extended this line of research by launching a new survey to address the dynamic landscape of the pandemic. This survey was released with the goal of addressing diversity, equity, and inclusion by working with over 150 researchers across the globe who collected data in 48 languages and dialects across 137 countries. The resulting cleaned dataset described here includes 15,740 of over 20,000 responses. The dataset allows cross-cultural study of psychological wellbeing and behaviours a year into the pandemic. It includes measures of stress, resilience, vaccine attitudes, trust in government and scientists, compliance, and information acquisition and misperceptions regarding COVID-19. Open-access raw and cleaned datasets with computed scores are available. Just as our initial COVIDiSTRESS dataset has facilitated government policy decisions regarding health crises, this dataset can be used by researchers and policy makers to inform research, decisions, and policy.Measurement(s)demographics • social status • identity • perceived stress • loneliness • stressors • support • compliance • social norms • vaccine attitude • vaccine willingness • trust • resilience • conspiratorial thinking • anti-expert sentiment scale (AESS) • moral foundations • emotional regulationTechnology Type(s)survey