Browsing NTNU Open by Author "Olsen, Alexander"
Now showing items 1-20 of 75
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Accelerated Aging after Traumatic Brain Injury: An ENIGMA Multi-Cohort Mega-Analysis
Dennis, Emily L; Vervoordt, Samantha; Adamson, Maheen M; Houshang, Amiri; Bigler, Erin D; Caeyenberghs, Karen; Cole, James H; Dams-O'Connor, Kristen; Deutscher, Evelyn M; Dobryakova, Ekaterina; Genova, Helen M; Grafman, Jordan H; Håberg, Asta; Hellstrøm, Torgeir; Irimia, Andrei; Koliatsos, Vassilis E; Lindsey, Hannah M; Livny, Abigail; Menon, David K; Merkley, Tricia L; Mohamed, Abdalla Z; Mondello, Stefania; Monti, Martin M; Newcombe, Virginia FJ; Newsome, Mary R; Ponsford, Jennie; Rabinowitz, Amanda; Smevik, Hanne; Spitz, Gershon; Venkatesan, Umesh M; Westlye, Lars Tjelta; Zafonte, Ross; Thompson, Paul M; Wilde, Elisabeth A; Olsen, Alexander; Hillary, Frank G (Journal article; Peer reviewed, 2024)Objective: The long-term consequences of traumatic brain injury (TBI) on brain structure remain uncertain. Given evidence that a single significant brain injury event increases the risk of dementia, brain-age estimation ... -
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 ... -
Affective Symptoms' associations with metacognitive beliefs, self-reported and performance-measured executive function
Dale, Lars-Oskar Hallaråker (Master thesis, 2019)Executive control and metacognitive beliefs are viewed as key contributors to emotional distress and disorder in the theoretical basis for metacognitive therapy, the self-regulatory executive function model. The present ... -
Assessing the Efficacy of Metacognitive Therapy for Persistent Post-Concussion Symptoms
Paoli, Stephanie (Master thesis, 2021)Milde traumatiske hjerneskader forårsaker symptomer som hodepine, søvnforstyrrelser, kognitiv dysfunksjon, deprimert humør og irritabilitet. For de fleste pasienter forsvinner disse symptomene etter ~ 3 måneder, men for ... -
Associations between executive functions, intelligence and adaptive behaviour in children and adolescents with mild intellectual disability
Gravråkmo, Sissel; Olsen, Alexander; Lydersen, Stian; Øie, Merete Glenne; Henry, Lucy; Ingul, Jo Magne (Journal article; Peer reviewed, 2022) -
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 ... -
Associations between Sleep and Work-Related Cognitive and Emotional Functioning in Police Employees
Sørengaard, Torhild Anita; Olsen, Alexander; Langvik, Eva; Saksvik-Lehouillier, Ingvild (Peer reviewed; Journal article, 2021)Aim We aimed to examine the cross-sectional and longitudinal associations between sleep and work-related impaired cognitive and emotional functioning in police employees. Methods This study included 410 participants ... -
A biofeedback app for migraine: Development and usability study
Ingvaldsen, Sigrid Hegna; Tronvik, Erling Andreas; Brenner, Eiliv; Winnberg, Ingunn; Olsen, Alexander; Gravdahl, Gøril Bruvik; Stubberud, Anker (Peer reviewed; Journal article, 2021)Background: Biofeedback is effective in treating migraines. It is believed to have a beneficial effect on autonomous nervous system activity and render individuals resilient to stressors that may trigger a migraine. However, ... -
Biofeedback Treatment App for Pediatric Migraine: Development and Usability Study
Stubberud, Anker; Tronvik, Erling Andreas; Olsen, Alexander; Gravdahl, Gøril Bruvik; Linde, Mattias (Peer reviewed; Journal article, 2020)Objective The objective of this study was to develop and investigate the usability of a biofeedback treatment smartphone app for adolescent migraine sufferers. Background Biofeedback is effective in treating pediatric ... -
Burnout - Its Relationship to Stress and Individual Susceptibilities
Holberg, Caroline (Master thesis, 2019)Burnout is a clinical phenomenon characterized by the symptoms of emotional exhaustion, depersonalization towards work and clients, as well as diminished professional efficacy. It is considered a consequence of long-term ... -
Chronic immunosuppression across 12 months and high ability of acute and subacute CNS-injury biomarker concentrations to identify individuals with complicated mTBI on acute CT and MRI
Clarke, Gerard Janez; Follestad, Turid; Skandsen, Toril; Zetterberg, Henrik; Vik, Anne; Blennow, Kaj; Olsen, Alexander; Håberg, Asta (Journal article; Peer reviewed, 2024)Background: Identifying individuals with intracranial injuries following mild traumatic brain injury (mTBI), i.e. complicated mTBI cases, is important for follow-up and prognostication. The main aims of our study were (1) ... -
Cognitive and vocational rehabilitation after mild-to-moderate traumatic brain injury: A randomised controlled trial
Fure, Silje Christine Reistad; Howe, Emilie; Andelic, Nada; Brunborg, Cathrine; Sveen, Unni; Røe, Cecilie; Rike, Per-Ola; Olsen, Alexander; Spjelkavik, Øystein; Ugelstad, Helene; Lu, Juan; Ponsford, Jennie; Twamley, Elizabeth; Hellstrøm, Torgeir (Peer reviewed; Journal article, 2021)Background Returning to work is often a primary rehabilitation goal after traumatic brain injury (TBI). However, the evidence base for treatment options regarding return to work (RTW) and stable work maintenance remains ... -
Cognitive Control Function and Moderate-to-Severe Traumatic Brain Injury: Functional and Structural Brain Correlates
Olsen, Alexander (Doctoral theses at NTNU;2014:372, Doctoral thesis, 2014)Clinical signs of traumatic brain injury (TBI) such as altered- or complete loss of consciousness, other neurological signs, and findings based on conventional neuroimaging, represents important information for initial ... -
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 ... -
Cognitive Reserve Moderates Cognitive Outcome After Mild Traumatic Brain Injury
Stenberg, Jonas; Håberg, Asta; Follestad, Turid; Olsen, Alexander; Iverson, Grant L.; Terry P., Douglas; Karlsen, Rune Hatlestad; Saksvik, Simen Berg; Karaliute, Migle; Ek, John Andre Nebb; Skandsen, Toril; Vik, Anne (Journal article; Peer reviewed, 2019)Objective To investigate whether cognitive reserve moderates differences in cognitive functioning between patients with mild traumatic brain injury (MTBI) and controls without MTBI and to examine whether patients with ... -
Cognitive Reserve Moderates Cognitive Outcome After Mild Traumatic Brain Injury
Stenberg, Jonas; Håberg, Asta; Follestad, Turid; Olsen, Alexander; Iverson, Grant L.; Terry P., Douglas; Karlsen, Rune Hatlestad; Saksvik, Simen Berg; Karaliute, Migle; Ek, John Andre Nebb; Skandsen, Toril; Vik, Anne (Peer reviewed; Journal article, 2019)Objective To investigate whether cognitive reserve moderates differences in cognitive functioning between patients with mild traumatic brain injury (MTBI) and controls without MTBI and to examine whether patients with ... -
The development, inter-rater agreement and performance of a hierarchical procedure for setting the rest-interval in actigraphy data
Follesø, Hanna Størksen; Austad, Sigrun Borgen; Olsen, Alexander; Saksvik-Lehouillier, Ingvild (Peer reviewed; Journal article, 2021)The aim of this study was to develop and empirically test a hierarchical procedure for defining rest intervals in actigraphy data. Background This is a two-part study. The aim of study 1 was to identify common practices ... -
Digital insomnia behavioral therapy for insomnia in people with chronic pain: A secondary analysis of a large scale randomized controlled trial
Orvik Wilberg, Anna (Master thesis, 2024)Digital insomnibehandling kan redusere insomni hos pasienter, men behandlingseffekt og etterlevelse varierer. Å undersøke mulige moderatorer av behandlingsutfall kan gi oss mer kunnskap om slik variasjon. Formålet med ... -
Digital Technology Biofeedback for the Prophylaxis of Pediatric Migraine
Stubberud, Anker (Doctoral theses at NTNU;2020:204, Doctoral thesis, 2020) -
Effects of Habitual Physical Activity on Positive Affect and Cognitive Control in Non-Sleep Deprived and Sleep Deprived Individuals
Høiby, Tea (Master thesis, 2020)Studier viser at høyere habituelt fysisk aktivitetsnivå er assosiert med bedre kognitive kontrollfunksjoner og høyere positiv affekt når dette undersøkes hos ikke-søvndepriverte. Samtidig er det en mangel på studier som ...