Silja MartikainenUniversity of Helsinki | HY · Cognitive Brain Research Unit
Silja Martikainen
PhD
About
24
Publications
5,139
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723
Citations
Citations since 2017
Introduction
Publications
Publications (24)
Inter-brain synchronization during social interaction has been linked with several positive phenomena, including closeness, cooperation, prosociality, and team performance. However, the temporal dynamics of inter-brain synchronization during collaboration are not yet fully understood. Furthermore, with collaboration increasingly happening online, t...
Objective:
Medical doctors' empathy is known to support patients' health status after face-to-face clinical visits. However, the role of doctors' empathy in chat-based encounters is not yet well understood. This study investigates whether patients' evaluations of doctors' empathy are associated with their health perceptions after a meeting at an o...
Already before the pandemic, digitally mediated collaborative work and communication were perceived as challenging. We investigate the attitudes towards emerging technologies and for transforming practises in workplaces. The focus lies on understanding the readiness for appropriating emotional tracking on presence and support for collaboration. The...
Augmenting online interpersonal communication with biosignals, often in the form of heart rate sharing, has shown promise in increasing affiliation, feelings of closeness, and intimacy. Increasing empathetic awareness in the professional domain and in the customer interface could benefit both customer and employee satisfaction, but heart rate shari...
Collaborative problem solving is more important than ever as the problems we try to solve become increasingly complex. Meanwhile, personal and professional communication has moved from face-to-face to computer-mediated environments, but there is little understanding on how the characteristics of these environments affect the quality of interaction...
We report how pair's empathy skills and dispositional empathy associate with their counterpart's evaluations of social closeness to the pair and subjective workload in a collaborative problem solving task completed both face-to-face and in virtual reality.
Joint improvised activity and synchrony of movement increases affiliation between people. The mirror game, where two people create joint motion in an improvised pattern, has been used to study different aspects of face-to-face collaboration and synchronization. To explore whether a similar game could be used to study computer-mediated interaction a...
Earlier puberty, especially in girls, is associated with physical and mental disorders. Prenatal glucocorticoid exposure influences the timing of puberty in animal models, but the human relevance of those findings is unknown. We studied whether voluntary consumption of licorice, which contains glycyrrhizin (a potent inhibitor of placental 11β- hydr...
Type 2 diabetes (T2D) is a global pandemic. Genome-wide association studies (GWASs) have identified >100 genetic variants associated with the disease, including a common variant in the melatonin receptor 1 b gene (MTNR1B). Here, we demonstrate increased MTNR1B expression in human islets from risk G-allele carriers, which likely leads to a reduction...
Background: Evidence regarding the associations between sleep duration and quality, and neurocognitive function in adolescents remains scanty. This study examined the associations in early adolescence between: sleep duration; efficiency; fragmentation; wake-after-sleep-onset (WASO); catch-up sleep; intelligence; memory; and executive function, incl...
Adults born preterm have higher blood pressure (BP) than those born at term. Most studies have focused on preterm birth, and few have assessed BP variability, an independent risk factor of cardiovascular disease. We studied the association of preterm birth with 24-hour ambulatory BP, measured by an oscillometric device, in 42 young adults born earl...
Unimpaired adults born preterm at very low birth weight (<1500 g) consistently have lower conditioning physical activity than those born at term. We used wrist-worn accelerometers to measure objectively physical activity in 57 very low birth weight and 47 control subjects aged 25 years. We found no difference in any physical activity measures.
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Little is known about the associations between physical activity (PA) and hypothalamic–pituitary–adrenocortical axis (HPAA) activity in adolescents. This knowledge could offer insight into the links between PA and well-being in youth. We studied whether objectively-measured PA is associated with diurnal salivary cortisol responses and morning saliv...
Background and aims Preterm birth with very low birth weight.
Methods We studied the association of preterm birth with 24-hour ambulatory BP and variabilityof BP in 42 young adults (mean age 23.2y) born early preterm (=37 weeks) in Northern Finland population. Wake and sleep period were distinguished with accelerometry in 72.4% of subjects, and for...
Information on the associations between objectively measured sleep and hypothalamic-pituitary-adrenal axis function in early adolescence is scarce. We examined associations between average sleep duration and quality (sleep efficiency and wake after sleep onset) over 8 days with actigraphs and (1) diurnal cortisol patterns and (2) cortisol reactivit...
We examined associations between pubertal maturation and sleep in early adolescence, at age 12 y, and continuity and change in actigraphy-based sleep and parent-reported sleep disorders from age 8 to 12 y. We also explored longitudinal associations between actigraph estimates of sleep and sleep disorders.
A cohort study of children born in 1998 and...
Objective
To assess the associations of sleep problems with 24-hour ambulatory blood pressure and cardiovascular reactivity in children.Methods
Sleep problems in 285 term-born, healthy 8-year-olds (mean [standard deviation] = 8.1 [0.3] years) were measured with a parent-rated Sleep Disturbance Scale for Children. Ambulatory blood pressure (n = 241)...
Context:
Children who undertake more physical activity (PA) not only have more optimal physical health but also enjoy better mental health. However, the pathways by which PA affects well-being remain unclear.
Objective:
To address this question, we examined whether objectively measured daytime PA was associated with diurnal hypothalamic-pituitar...
We studied whether physical activity, measured by wrist-worn accelerometers, is associated with mother- and teacher-rated psychiatric problems in 8-year-old children (n = 199). Higher overall physical activity and more time spent in more intense physical activity were associated with lower odds for psychiatric problems in emotional, social, and beh...
We examined temporal associations between objectively-measured physical activity (PA) during the day and in the evening, and sleep quantity and quality.
PA and sleep were measured by actigraphs for an average of one week in an epidemiological cohort study of 275 eight-year-old children.
For each one standard deviation (SD) unit of increased PA duri...
We investigated whether sleep quantity and quality were related to 24-hour ambulatory blood pressure and cardiovascular reactivity in children. We studied term-born, healthy 8.0-year olds (SD: 1.4 years) without sleep-disordered breathing (231 and 265 children provided valid data for analyses of ambulatory blood pressure and cardiovascular reactivi...
Questions
Question (1)
I want to test for a linear trend using a non-continuous predictor variable: dB levels of seven different classrooms to predict wellbeing. My data is nested since I have answers from several people within the same classroom. Otherwise I would test the linear trend using ANOVA and a contrast, but in this case is it OK to do this using mixed models with a random intercept for classroom and adding the dB level variable as a covariate instead of a factor? Or would this approach be problematic?
Projects
Projects (2)
CREDU is a multidisciplinary research project studying phenomena important to learning, such as fundamental cognitive and emotional mechanisms, the value of interaction, and the development of long term learning motivation. The project studies, for example, how different learning environments (kindergartens, school classrooms, workplaces or VR-environments) affect learning and the related background functions.
