John Axelsson
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View article: Associations between chronotype and psychiatric symptoms across the adult lifespan
Associations between chronotype and psychiatric symptoms across the adult lifespan Open
Chronotype, the individual propensity towards morningness or eveningness, is a transdiagnostic factor implicated in mental health. How chronotype covaries with distinct psychiatric symptoms across the adult lifespan remains underinvestigat…
View article: Influences of Recovery Time and Time of Day on Sleep Duration Prior Work Shifts: Analysing Diary and Actigraphy Data From 14 Studies
Influences of Recovery Time and Time of Day on Sleep Duration Prior Work Shifts: Analysing Diary and Actigraphy Data From 14 Studies Open
View article: Effects on Blood Markers for Stress, Metabolism and Inflammation in Nurses Working Quick Returns (<11h Between Shifts) – and Experimental Field Study
Effects on Blood Markers for Stress, Metabolism and Inflammation in Nurses Working Quick Returns (<11h Between Shifts) – and Experimental Field Study Open
View article: Facial cues of sickness reduce trustworthiness judgements, with stronger effects in women
Facial cues of sickness reduce trustworthiness judgements, with stronger effects in women Open
A behavioral defense against disease involves detecting sickness cues in others and responding adaptively, such as by avoiding social interactions. While studies have shown that humans can discriminate sickness cues above chance in faces a…
View article: The potential of ensemble-based automated sleep staging on single-channel EEG signal from a wearable device
The potential of ensemble-based automated sleep staging on single-channel EEG signal from a wearable device Open
Machine-learning-based sleep staging models have achieved expert-level performance on standard polysomnographic (PSG) data. However, their application to EEG recorded by wearable devices remains limited by non-conventional referencing mont…
View article: The smoke-detector principle of pathogen avoidance: A test of how the behavioral immune system gives rise to prejudice
The smoke-detector principle of pathogen avoidance: A test of how the behavioral immune system gives rise to prejudice Open
Motivations to avoid infectious disease seem to influence prejudice toward some groups, including groups not explicitly associated with infectious disease. The standard explanation for this phenomenon is based on signal detection theory an…
View article: Sleep health associations with serum metabolites in healthy adults
Sleep health associations with serum metabolites in healthy adults Open
These observations indicate that sleep timing features, midpoint and social jetlag, have a stronger relationship with morning metabolism than other sleep health dimensions. Following replication in larger samples, these compl…
View article: The motivational drives of sickness: Acute changes in self-rated motivation during experimental endotoxemia using the the Motivation Scale of Sickness (MOSSick)
The motivational drives of sickness: Acute changes in self-rated motivation during experimental endotoxemia using the the Motivation Scale of Sickness (MOSSick) Open
While altered motivation is central in sickness behaviour, previous research has mainly focused on motivation for rewards, rather than motivational changes in a broader perspective. In a larger study following a randomized within-subject p…
View article: Delusion-proneness predicts COVID-19 vaccination behavior
Delusion-proneness predicts COVID-19 vaccination behavior Open
Introduction Vaccination-related conspiracy ideation is related to reduced compliance with public health advice globally. Such beliefs have previously been linked to the delusion-proneness trait. However, it is not known how this extends t…
View article: Understanding frustration triggers and emotional responses in driving situations
Understanding frustration triggers and emotional responses in driving situations Open
Frustration is a complex emotional phenomenon subject to various triggers and manifested through multifaceted behavioral and affective responses. This study investigates the relationship between distinct frustration-inducing situations enc…
View article: The smoke-detector principle of pathogen avoidance: A test of how the behavioral immune system gives rise to prejudice (stage 1 registered report)
The smoke-detector principle of pathogen avoidance: A test of how the behavioral immune system gives rise to prejudice (stage 1 registered report) Open
Motivations to avoid infectious disease seem to influence prejudice toward some groups, including groups not explicitly associated with infectious disease. The standard explanation relies on signal detection theory and proposes that pathog…
View article: WITHDRAWN
WITHDRAWN Open
Frustration is a complex emotional phenomenon subject to various triggers and manifested through multifaceted behavioral and affective responses. This study investigates the relationship between distinct frustration-inducing situations enc…
View article: Sleep profiles of different psychiatric traits
Sleep profiles of different psychiatric traits Open
View article: Insomnia symptom severity and dynamics of arousal‐related symptoms across the day
Insomnia symptom severity and dynamics of arousal‐related symptoms across the day Open
Summary Arousal is a central component of many emotional symptoms and can contribute to insomnia. Here we assessed how the timing and fluctuating nature of arousal‐related symptoms over the course of the day relate to insomnia symptom seve…
View article: The rhythm of mental health: the relationship of chronotype with psychiatric trait dimensions and diurnal variation in psychiatric symptoms
The rhythm of mental health: the relationship of chronotype with psychiatric trait dimensions and diurnal variation in psychiatric symptoms Open
View article: Diurnal variation in anxiety and activity is influenced by chronotype and probable anxiety-related disorder status
Diurnal variation in anxiety and activity is influenced by chronotype and probable anxiety-related disorder status Open
Anxiety symptoms vary moment-to-moment within a day. One factor that may influence these variations is chronotype. Evening chronotypes prefer to engage in activities (e.g., sleep, physical and social activity) later in the day, and evening…
View article: Sleep and subjective age: protect your sleep if you want to feel young
Sleep and subjective age: protect your sleep if you want to feel young Open
The current studies examined the impact of insufficient sleep and sleepiness on the subjective experience of age. Study 1, a cross-sectional study of 429 participants (282 females (66%), 144 males, 3 other gender; age range 18–70), showed …
View article: Vaccine-induced low-grade inflammation and sleep restriction induce coordinated motivational changes that facilitate recovery: An experimental two-hit stress model
Vaccine-induced low-grade inflammation and sleep restriction induce coordinated motivational changes that facilitate recovery: An experimental two-hit stress model Open
Objective: To determine the impact of experimentally-induced low-grade inflammation and sleep loss on the motivation to engage in everyday life behaviors. We also examined how the motivational changes seen after these stressors overlap and…
View article: Is snoozing losing? Why intermittent morning alarms are used and how they affect sleep, cognition, cortisol, and mood
Is snoozing losing? Why intermittent morning alarms are used and how they affect sleep, cognition, cortisol, and mood Open
Summary Pressing the snooze button is a common way to start the day, but little is known about this behaviour. Through two studies we determined predictors and effects of snoozing. In Study 1 ( n = 1732) respondents described their waking …
View article: Human scent as a first-line defense against disease
Human scent as a first-line defense against disease Open
Individuals may have a different body odor, when they are sick compared to healthy. In the non-human animal literature, olfactory cues have been shown to predict avoidance of sick individuals. We tested whether the mere experimental activa…
View article: Validation of the sleep EEG headband ZMax
Validation of the sleep EEG headband ZMax Open
Polysomnography (PSG) is the gold standard for recording sleep. However, the standard PSG systems are bulky, expensive, and often confined to lab environments. These systems are also time-consuming in electrode placement and sleep scoring.…
View article: The walking sick: Perception of experimental sickness from biological motion
The walking sick: Perception of experimental sickness from biological motion Open
View article: 0163 Impact of cold-water hand immersion on cognitive performance and sleepiness during sleep inertia
0163 Impact of cold-water hand immersion on cognitive performance and sleepiness during sleep inertia Open
Introduction Sleep inertia is a state of impaired cognitive performance upon awakening that dissipates with time awake. Manipulation of the distal-to-proximal skin temperature gradient using cold water has been hypothesized as a potential …
View article: Lipopolysaccharide-induced changes in the kynurenine pathway and symptoms of sickness behavior in humans
Lipopolysaccharide-induced changes in the kynurenine pathway and symptoms of sickness behavior in humans Open
Metabolites of the kynurenine pathway are hypothesized to be implicated in inflammation-associated depression, but there is a lack of experimental studies in humans assessing the kinetics of kynurenine metabolites in relation to experiment…
View article: Humans can detect axillary odor cues of an acute respiratory infection in others
Humans can detect axillary odor cues of an acute respiratory infection in others Open
Background and objectives Body odor conveys information about health status to conspecifics and influences approach-avoidance behaviors in animals. Experiments that induce sickness in otherwise healthy individuals suggest that humans too c…
View article: Dataset - "<i>Humans can detect axillary odor cues of an acute respiratory infection in others"</i> published in Evolution, Medicine and Public Health (2023).
Dataset - "<i>Humans can detect axillary odor cues of an acute respiratory infection in others"</i> published in Evolution, Medicine and Public Health (2023). Open
Dataset supporting the main findings of the published paper entitled "Humans can detect axillary odor cues of an acute respiratory infection in others" published in Evolution, Medicin and Public Health (2023). Body odor samples w…
View article: Dataset - "<em>Humans can detect axillary odor cues of an acute respiratory infection in others"</em> published in Evolution, Medicin and Public Health (2023).
Dataset - "<em>Humans can detect axillary odor cues of an acute respiratory infection in others"</em> published in Evolution, Medicin and Public Health (2023). Open
Dataset supporting the main findings of the published paper entitled "Humans can detect axillary odor cues of an acute respiratory infection in others" published in Evolution, Medicin and Public Health (2023). Body odor samples w…
View article: Discriminating between sick and healthy faces based on early sickness cues: an exploratory analysis of sex differences
Discriminating between sick and healthy faces based on early sickness cues: an exploratory analysis of sex differences Open
Background and objectives It has been argued that sex and disease-related traits should influence how observers respond to sensory sickness cues. In fact, there is evidence that humans can detect sensory cues related to infection in others…
View article: Intelligence predicts better cognitive performance after normal sleep but larger vulnerability to sleep deprivation
Intelligence predicts better cognitive performance after normal sleep but larger vulnerability to sleep deprivation Open
Summary Fluid intelligence is seen as a beneficial attribute, protecting against stress and ill‐health. Whether intelligence provides resilience to the cognitive effects of insufficient sleep was tested in the current pre‐registered experi…
View article: Experimental Sleep Deprivation Results in Diminished Perceptual Stability Independently of Psychosis Proneness
Experimental Sleep Deprivation Results in Diminished Perceptual Stability Independently of Psychosis Proneness Open
Psychotic disorders as well as psychosis proneness in the general population have been associated with perceptual instability, suggesting weakened predictive processing. Sleep disturbances play a prominent role in psychosis and schizophren…