Now showing items 341-360 of 830

    • Sleep in the land of the midnight sun and polar night: The Tromsø study 

      Sivertsen, Børge; Friborg, Oddgeir; Pallesen, Ståle; Vedaa, Øystein; Hopstock, Laila Arnesdatter (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-29)
      While some diseases and human behaviors fluctuate consistently with season, the extent of seasonal variations in sleep, especially at high latitudes, is less consistent. We used data from a geographic region (69º North) with extremely large seasonal differences in daylight that had the participants blinded for the current study’s hypotheses. Data were derived from the Tromsø Study (2015–2016), an ...
    • The interplay between executive control, behavioral variability and mind wandering: Insights from a high-definition transcranial direct-current stimulation study 

      Boayue, Nya Mehnwolo; Csifcsak, Gabor; Kreis, Isabel Viola; Schmidt, Carole; Finn, Iselin Caroline; Vollsund, Anna Elfrida Hovde; Mittner, Matthias (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-21)
      While the involvement of executive processes in mind wandering is largely undebated, their exact relationship is subject to an ongoing debate and rarely studied dynamically within‐subject. Several brain‐stimulation studies using transcranial direct current stimulation (tDCS) have attempted to modulate mind‐wandering propensity by stimulating the left dorsolateral prefrontal cortex (DLPFC) which is ...
    • Rapid changes in sociosexual behaviors around transition to and from behavioral estrus, in female rats housed in a seminatural environment 

      Le Moene, Olivia; Hernandez-Arteaga, Enrique; Chu, Xi; Ågmo, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-28)
      Gonadally intact female rats display sexual behaviors only during a portion of the estrus cycle. In standard experimental setups, the on- and offset of sexual behavior is gradual. However, in naturalistic settings, it is almost instantaneous. We assessed the changes in sociosexual behaviors at the beginning and end of behavioral estrus in ovariectomized females treated with ovarian hormones. Rats ...
    • Winter is coming: Wintertime mindset and wellbeing in Norway 

      Leibowitz, Kari; Vittersø, Joar (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-30)
      Previous research of the effect of winter on wellbeing has yielded contradictory findings. While there is evidence that the lack of sunlight in wintertime can lead to seasonal depression and negative emotions, many individuals are able to thrive during the winter. What might determine whether the darkness of winter leads to poor psychological outcomes? To investigate whether or not mindset contributes ...
    • Effects of dichotic listening on gait domains of healthy older adults during dual-tasking: An exploratory observational study 

      Castro-Chavira, Susana Angelica; Gorecka, Marta Maria; Vasylenko, Olena; Rodriguez-Aranda, Claudia (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-28)
      <i>Background</i> - Identification of the cognitive mechanisms behind gait changes in aging is a prime endeavor in gerontology and geriatrics. For this reason, we have implemented a new dual-task paradigm where an auditory attentional task is performed during over-ground walking. Dichotic listening assesses spontaneous attention and voluntary attention directed to right and left-ear. The uniqueness ...
    • Deliberation Decreases the Likelihood of Expressing Dominant Responses 

      Martiny-Huenger, Torsten; Bieleke, Maik; Doerflinger, Johannes T.; Stephensen, Matthew; Gollwitzer, Peter M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-11)
      Deliberation is commonly assumed to be a central characteristic of humans’ higher cognitive functions, and the responses following deliberation are attributed to mechanisms that are qualitatively different from lower-level associative or affectively driven responses. In contrast to this perspective, the current article’s aim is to draw attention to potential issues with making inferences about ...
    • Effects of gonadectomy and dihydrotestosterone on neuronal plasticity in motivation and reward related brain regions in the male rat 

      Huijgens, Patty Thalia; Snoeren, Eelke; Meisel, Robert; Mermelstein, Paul (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-06)
      Gonadal hormones affect neuronal morphology to ultimately regulate behaviour. In female rats, oestradiol mediates spine plasticity in hypothalamic and limbic brain structures, contributing to long‐lasting effects on motivated behaviour. Parallel effects of androgens in male rats have not been extensively studied. Here, we investigated the effect of both castration and androgen replacement on spine ...
    • Can accelerated transcranial direct current stimulation improve memory functions? An experimental, placebo-controlled study 

      Bystad, Martin; Storø, Benedicte Haug; Gundersen, Nina; Larsen Wiik, Ida Karine; Nordvang, Lene; Grønli, Ole; Rasmussen, Ingrid Daae; Aslaksen, Per M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-01)
      The aim of this study was to investigate whether transcranial Direct Current Stimulation (tDCS) could improve verbal memory functions in healthy old and younger participants. We hypothesized that active tDCS led to significantly improved memory function, compared to placebo tDCS. Forty healthy participants (20 old and 20 younger participants) were included in the study. We applied a novel stimulation ...
    • Post-stroke health-related quality of life at 3 and 12 months and predictors of change in a Danish and Arctic Norwegian Region 

      Heiberg, Guri Anita; Friborg, Oddgeir; Pedersen, Synne Garder; Thrane, Gyrd; Stabell, Henriette Holm; Nielsen, Jørgen Feldbæk; Anke, Audny (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-30)
      Objectives: To investigate changes in health-related quality of life between 3- and 12-months post-stroke in a north Norwegian and a Danish region that organize their rehabilitation services differently, and to identify clinically relevant predictors of change. Design: Prospective multicentre cohort study. Subjects: In total, 304 patients with first-ever stroke (male sex 59%, mean age 68.7 years) ...
    • Time trends in the effects of mindfulness-based cognitive therapy for depression: A meta-analysis 

      Thimm, Jens; Johnsen, Tom Johan (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-21)
      Recent studies suggest that the effects of cognitive therapies for depression show systematic changes over time. A meta‐analysis was conducted to explore the temporal development of the effect of mindfulness‐based cognitive therapy (MBCT) for current depression in studies that used the Beck Depression Inventory (BDI) or the Hamilton Depression Rating Scale (HDRS) as outcome measures. A systematic ...
    • Are Parents Less Responsive to Young Children When They Are on Their Phones? A Systematic Naturalistic Observation Study 

      Vanden Abeele, Mariek M. P.; Abels, Monika; Hendrickson, Andrew T. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-04)
      This study examined whether parents are less responsive to their young children (0–5) when they use a phone. We systematically observed 53 parent–child dyads in consultation bureau waiting rooms and playgrounds. Twenty-three parents used their phone at least once during the observation. Across the dyads, we observed parent and child behavior during a total of 1,038 ten-second intervals. Of these ...
    • The Role of Emotions for 4 Athletes in Nordic Combined in Ski Jumping Competitions in World Cup 

      Moen, Frode; Vitsøe, Joar; Rasdal, Vegard; Myhre, Kenneth; Sandbakk, Øyvind (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-02)
      This study looks at how emotions were associated with ski jumping competitions in world cup for four athletes representing the Norwegian national team in Nordic combined. The athletes documented their emotional experiences during competition rounds (trial-, and competition rounds) and non-competitive episodes (the period just after the competition round). The results in this study show that there ...
    • Model Gender Interacts With Expressed Emotion to Enhance Startle: Angry Male and Happy Female Faces Produce the Greatest Potentiation 

      Åsli, Ole; Øvervoll, Morten (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-09)
      Several studies have implied gender differences in startle reaction to emotional facial expressions. However, few studies have been designed to investigate the difference between responding to emotional female vs. male faces, nor gender differences in responses. The present experiment investigated startle EMG responses to a startle probe while viewing pictures of neutral, happy, angry, fearful, and ...
    • Can HRV Biofeedback Improve Short-Term Effort Recovery? Implications for Intermittent Load Sports 

      Perez-Gaido, Mauro; Lalanza, Jaume F; Parrado, Eva; Capdevila, Lluis (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-05)
      As intensity and physical demands continue to rise in sport competition, faster and better recovery becomes essential. The aim of this study was to assess the effects of HRV biofeedback (HRVB) while recovering from a submaximal aerobic exercise. Ten physically-active graduate students participated in the study, which was conducted in four sessions: exercise with free-breathing recovery, first ...
    • The Cafeteria Diet: a standardized protocol and its effects on behavior 

      Lalanza, Jaume F; Snoeren, Eelke (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-10)
      Obesity is a major health risk, with junk food consumption playing a central role in weight gain, because of its high palatability and high-energy nutrients. The Cafeteria (CAF) diet model for animal experiments consists of the same tasty but unhealthy food products that people eat (e.g. hot dogs and muffins), and considers variety, novelty and secondary food features, such as smell and texture. ...
    • Probing the neural signature of mind wandering with simultaneous fMRI-EEG and pupillometry 

      Groot, Josephine Maria; Boayue, Nya Mehnwolo; Csifcsak, Gabor; Boekel, Wouter; Huster, Rene; Forstmann, Birte U; Mittner, Matthias (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-01)
      Mind wandering reflects the shift in attentional focus from task-related cognition driven by external stimuli toward self-generated and internally-oriented thought processes. Although such task-unrelated thoughts (TUTs) are pervasive and detrimental to task performance, their underlying neural mechanisms are only modestly understood. To investigate TUTs with high spatial and temporal precision, we ...
    • Amyloid plaques and symptoms of depression links to medical help-seeking due to subjective cognitive decline 

      Espenes, Ragna; Kirsebom, Bjørn-Eivind; Eriksson, Cecilia Magdalena; Waterloo, Knut K; Hessen, Erik; Johnsen, Stein Harald; Selnes, Per; Fladby, Tormod (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-02)
      <i>Background:</i> Subjective cognitive decline (SCD) is associated with an increased risk of Alzheimer’s disease (AD). However, patients reporting SCD to their general practitioner are not always referred to a memory clinic.<p> <p><i>Objective:</i> To investigate whether prior history of medical help-seeking is associated with AD biomarker abnormality, worse cognitive performance, and/or depressive ...
    • Cerebral cortical thickness and surface area in adolescent anorexia nervosa: Separate and joint analyses with a permutation-based nonparametric method 

      Myrvang, Anna Dahl; Vangberg, Torgil Riise; Stedal, Kristin; Rø, Øyvind; Endestad, Tor; Rosenvinge, Jan H; Aslaksen, Per M (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-17)
      <i>Objective</i> - Reduction in cerebral volume is often found in underweight patients with anorexia nervosa (AN), but few studies have investigated other morphological measures. Cortical thickness (CTh) and surface area (CSA), often used to produce the measure of cortical volume, are developmentally distinct measures that may be differentially affected in AN, particularly in the developing brain. ...
    • Does she comfort the victim whilst he punishes the perpetrator? No gender differences in anonymous economic games across 11 nations. 

      Dorrough, Angela R.; Olsson, Maria; Froehlich, Laura; Gloeckner, Andreas; Martiny, Sarah E. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-26)
      Social role theory posits that occupational gender roles give rise to gender differences in behavior, such that men and women engage in qualitatively different prosocial behaviors. Therefore, we expected that women who observed an unfair situation (involving a victim and a perpetrator) would respond by demonstrating communal prosocial behavior (by compensating the victim), whereas men would respond ...
    • Sleep problems and worrying precede psychotic symptoms during an online intervention for psychosis 

      Lüdtke, Thies; Pfuhl, Gerit; Moritz, Steffen; Ruegg, Nina; Berger, Thomas; Westermann, Stefan (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-10)
      <p><i>Objective - </i>Experience sampling assessments (multiple assessments per day for approximately one week) indicate that positive symptoms fluctuate over time in psychosis. Precursors, such as sleep problems or worrying, predict these fluctuations. To date, it remains unclear whether the same precursors predict symptom variability also during treatment in an online intervention for psychosis, ...