Browsing Institutt for psykisk helse by Author "Olsen, Alexander"
Now showing items 1-8 of 8
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Adhd and mental health symptoms in the identification of young adults with increased risk of alcohol dependency in the general population—the hunt4 population study
Lauvsnes, Anders Dahlen Forsmo; Langaas, Mette; Olsen, Alexander; Vassileva, Jasmin; Spigset, Olav; Gråwe, Rolf Wilhelm (Peer reviewed; Journal article, 2021)Symptoms of ADHD are strongly associated with alcohol use disorders, and mental health symptoms attenuate this relationship. There is limited knowledge about how specific symptoms of inattentiveness and hyperactivity/impulsivity ... -
Associations between intelligence, everyday executive functions, and symptoms of mental health problems in children and adolescents with mild intellectual disability
Gravråkmo, Sissel; Henry, Lucy; Olsen, Alexander; Øie, Merete Glenne; Lydersen, Stian; Ingul, Jo Magne (Peer reviewed; Journal article, 2023)Background: Children and adolescents with intellectual disabilities have been found to have a higher prevalence of symptoms of mental health problems than the general population, but it is unclear whether these challenges ... -
Cognitive performance in DSWPD patients upon awakening from habitual sleep compared with forced conventional sleep
Solheim, Brandy; Olsen, Alexander; Kallestad, Håvard; Langsrud, Knut; Bjorvatn, Bjørn; Gradisar, Michael; Sand, Trond (Journal article; Peer reviewed, 2018)Difficult early morning awakening is one of the defining symptoms of delayed sleep–wake phase disorder. It is accompanied by low cognitive arousal and drowsiness resulting in difficulty concentrating and focusing attention ... -
High neuroticism is associated with reduced negative affect following sleep deprivation
Saksvik-Lehouillier, Ingvild; Langvik, Eva; Saksvik, Simen Berg; Kallestad, Håvard; Follesø, Hanna Størksen; Austad, Sigrun Borgen; Dahlberg, Johanna; Ringen, Heidi; Tanum, Tiril Kristine; Sørengaard, Torhild Anita; Karlsen, Håvard Rudi; Smedbøl, Trine; Olsen, Alexander (Peer reviewed; Journal article, 2021)The aim was to investigate how neuroticism moderates the affective consequences of personalized mild-moderate partial sleep deprivation. A total of 52 healthy subjects aged 18–35 years completed the NEO PI-3 at baseline, ... -
Intellectual Disability in Childhood and Adolescence: Social skills and the significance of everyday executive functions for adaptive behaviours and mental health
Gravråkmo, Sissel (Doctoral theses at NTNU;2024:165, Doctoral thesis, 2024)The diagnosis of intellectual disability implies that intelligence and adaptive skills are more than two standard deviations below the mean for the age group. Intellectual disability is divided into levels, where mild ... -
Mild to moderate partial sleep deprivation is associated with increased impulsivity and decreased positive affect in young adults
Saksvik-Lehouillier, Ingvild; Saksvik, Simen Berg; Dahlberg, Berit Johanna; Tanum, Tiril Kristine; Ringen, Heidi; Karlsen, Håvard Rudi; Smedbøl, Trine; Sørengaard, Torhild Anita; Stople, Mailen; Kallestad, Håvard; Olsen, Alexander (Peer reviewed; Journal article, 2020)The effects of mild–moderate partial sleep deprivation on affective and cognitive functioning were evaluated in a naturalistic home environment, mimicking short sleep typically caused by demands from work or society. A ... -
Poorer sleep health is associated with altered brain activation during cognitive control processing in healthy adults
Smevik, Hanne; Habli, Sarah; Saksvik, Simen Berg; Kliem, Elisabeth; Evensmoen, Hallvard Røe; Conde, Virginia; Petroni, Agustin; Asarnow, Robert F.; Dennis, Emily L.; Eikenes, Live; Kallestad, Håvard; Sand, Trond Halfdan; Thompson, Paul M.; Saksvik-Lehouillier, Ingvild; Håberg, Asta; Olsen, Alexander (Peer reviewed; Journal article, 2023)This study investigated how proactive and reactive cognitive control processing in the brain was associated with habitual sleep health. BOLD fMRI data were acquired from 81 healthy adults with normal sleep (41 females, age ... -
The prevalence and stability of sleep-wake disturbance and fatigue throughout the first year after mild traumatic brain injury
Saksvik, Simen Berg; Karaliute, Migle; Kallestad, Håvard; Follestad, Turid; Asarnow, Robert F.; Vik, Anne; Håberg, Asta; Skandsen, Toril; Olsen, Alexander (Peer reviewed; Journal article, 2020)In this prospective, longitudinal study, we aimed to determine the prevalence and stability of sleep-wake disturbance (SWD) and fatigue in a large representative sample of patients (Trondheim mild traumatic brain injury ...