2024

• Johansen, Truls Sveløkken; Matre, Martin; Løvstad, Marianne; Lund, Anne; Martinsen, Anne Catrine Trægde; Olsen, Alexander. (2024) Virtual reality as a method of cognitive training of processing speed, working memory, and sustained attention in persons with acquired brain injury: a protocol for a randomized controlled trial. Trials
  Fagartikkel
• Giri, Samita; Tronvik, Erling Andreas; Dalen, Håvard; Ellekjær, Hanne; Olsen, Alexander; Hagen, Knut. (2024) Headache disorders and risk of stroke. A register-linked HUNT study. Cephalalgia Reports
  Vitenskapelig artikkel
• Kennedy, Eamonn; Vadlamani, Shashank; Lindsey, Hannah M.; Lei, Pui-Wa; Jo-Pugh, Mary; Thompson, Paul M.. (2024) Bridging big data in the ENIGMA consortium to combine non-equivalent cognitive measures. Scientific Reports
  Vitenskapelig artikkel
• Clarke, Gerard Janez; Follestad, Turid; Skandsen, Toril; Zetterberg, Henrik; Vik, Anne; Blennow, Kaj. (2024) 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. Journal of Neuroinflammation
  Vitenskapelig artikkel
• Caeyenberghs, Karen; Imms, Phoebe; Irimia, Andrei; Monti, Martin M.; Esopenko, Carrie; de Souza, Nicola L.. (2024) ENIGMA's simple seven: Recommendations to enhance the reproducibility of resting-state fMRI in traumatic brain injury. NeuroImage: Clinical
  Vitenskapelig oversiktsartikkel/review
• Giri, Samita; Tronvik, Erling Andreas; Dalen, Håvard; Ellekjær, Hanne; Loennechen, Jan Pål; Olsen, Alexander. (2024) Migraine and risk of atrial fibrillation: A 9-year follow-up based on the Trøndelag Health Study. Cephalalgia
  Vitenskapelig artikkel
• Kennedy, Eamonn; Liebel, Spencer W.; Lindsey, Hannah M.; Vadlamani, Shashank; Lei, Pui-Wa; Adamson, Maheen M.. (2024) Verbal Learning and Memory Deficits across Neurological and Neuropsychiatric Disorders: Insights from an ENIGMA Mega Analysis. Brain Sciences
  Vitenskapelig artikkel
• Dennis, Emily L; Vervoordt, Samantha; Adamson, Maheen M; Houshang, Amiri; Bigler, Erin D; Caeyenberghs, Karen. (2024) Accelerated Aging after Traumatic Brain Injury: An ENIGMA Multi-Cohort Mega-Analysis. Annals of Neurology
  Vitenskapelig artikkel
• Howe, Emilie Isager; Andelic, Nada; Brunborg, Cathrine; Zeldovich, Marina; Helseth, Eirik; Skandsen, Toril. (2024) Frequency and predictors of headache in the first 12 months after traumatic brain injury: results from CENTER-TBI. The Journal of Headache and Pain
  Vitenskapelig artikkel
• Rauwenhoff, Johanne Catharina Charlotte; Hagen, Roger; Karaliute, Migle; Hjemdal, Odin; Kennair, Leif Edward Ottesen; Solem, Stian. (2024) Metacognitive Therapy for People Experiencing Persistent Post-Concussion Symptoms Following Mild Traumatic Brain Injury: A Preliminary Multiple Case-Series Study. Neurotrauma Reports
  Vitenskapelig artikkel

2023

• Olsen, Alexander; Cwiek, Andrew; Dennis, Emily; Hillary, Frank G.. (2023) Moderate and Severe Traumatic Brain Injury. Sage Publications
  Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
• Keleher, Finian; Lindsey, Hannah; Kerestes, Rebecca; Amiri, Houshang; Asarnow, Robert; Babikian, Talin. (2023) Multimodal Analysis of Secondary Cerebellar Alterations After Pediatric Traumatic Brain Injury. JAMA Network Open
  Vitenskapelig artikkel
• Matre, Martin; Johansen, Truls Sveløkken; Olsen, Alexander; Tornås, Sveinung; Martinsen, Anne Catrine Trægde; Lund, Anne. (2023) A protocol for the development and validation of a virtual reality-based clinical test of social cognition. BMC Digital Health
  Fagartikkel
• Stubberud, Anker; Ingvaldsen, Sigrid Hegna; Brenner, Eiliv; Winnberg, Ingunn Grøntveit; Olsen, Alexander; Gravdahl, Gøril Bruvik. (2023) Forecasting migraine with machine learning based on mobile phone diary and wearable data. Cephalalgia
  Vitenskapelig artikkel
• Eriksen, Adrian Dybfest; Olsen, Alexander; Sigmundsson, Hermundur. (2023) Exploring the relationships between visuospatial working memory, math, letter-sound knowledge, motor competence, and gender in first grade children: A correlational study. Frontiers in Psychology
  Vitenskapelig artikkel
• Smevik, Hanne; Habli, Sarah; Saksvik, Simen Berg; Kliem, Elisabeth; Evensmoen, Hallvard Røe; Conde, Virginia. (2023) Poorer sleep health is associated with altered brain activation during cognitive control processing in healthy adults. Cerebral Cortex
  Vitenskapelig artikkel
• Gravråkmo, Sissel; Henry, Lucy; Olsen, Alexander; Øie, Merete Glenne; Lydersen, Stian; Ingul, Jo Magne. (2023) Associations between intelligence, everyday executive functions, and symptoms of mental health problems in children and adolescents with mild intellectual disability. International Journal of Developmental Disabilities (IJDD)
  Vitenskapelig artikkel

2022

• Bickart, Kevin C.; Olsen, Alexander; Dennis, Emily L.; Babikian, Talin; Hoffman, Ann N.; Snyder, Aliyah. (2022) Frontoamygdala hyperconnectivity predicts affective dysregulation in adolescent moderate-severe TBI. Frontiers in Rehabilitation Sciences
  Vitenskapelig artikkel
• Olsen, Alexander; Dennis, Emily L.; Stubberud, Jan Egil; Hovenden, Elizabeth S.; Solbakk, Anne-Kristin; Endestad, Tor. (2022) Regional brain volume prior to treatment is linked to outcome after cognitive rehabilitation in traumatic brain injury. NeuroImage: Clinical
  Vitenskapelig artikkel
• Sørengaard, Torhild Anita; Langvik, Eva ; Olsen, Alexander; Saksvik-Lehouillier, Ingvild. (2022) Predictors of insomnia symptoms in police employees: a longitudinal investigation and comparison of personality and psychosocial work factors. Cogent Psychology
  Vitenskapelig artikkel
• Kliem, Elisabeth; Labberton, Angela Susan; Barra, Mathias; Olsen, Alexander; Thommessen, Bente; Thomas, Owen Matthew Truscott. (2022) Self-reported cognitive and psychiatric symptoms at 3 months predict single-item measures of fatigue and daytime sleep 12 months after ischemic stroke. Frontiers in Neurology
  Vitenskapelig artikkel
• Gravråkmo, Sissel; Olsen, Alexander; Lydersen, Stian; Ingul, Jo Magne; Henry, Lucy; Øie, Merete Glenne. (2022) Associations between executive functions, intelligence and adaptive behaviour in children and adolescents with mild intellectual disability. Journal of Intellectual Disabilities
  Vitenskapelig artikkel
• Fure, Silje Christine Reistad; Howe, Emilie; Andelic, Nada; Brunborg, Cathrine; Olsen, Alexander; Rike, Per-Ola. (2022) Workplace Factors Associated With Return to Work After Mild-to-Moderate Traumatic Brain Injury. The journal of head trauma rehabilitation
  Vitenskapelig artikkel

2021

• Saksvik, Simen Berg; Smevik, Hanne; Stenberg, Jonas; Follestad, Turid; Vik, Anne; Håberg, Asta. (2021) Poor sleep quality is associated with greater negative consequences for cognitive control function and psychological health after mild traumatic brain injury than after orthopedic injury. Neuropsychology
  Vitenskapelig artikkel
• Lauvsnes, Anders Dahlen Forsmo; Langaas, Mette; Olsen, Alexander; Vassileva, Jasmin; Spigset, Olav; Gråwe, Rolf Wilhelm. (2021) 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. International Journal of Environmental Research and Public Health (IJERPH)
  Vitenskapelig artikkel
• Ingvaldsen, Sigrid Hegna; Tronvik, Erling Andreas; Brenner, Eiliv; Winnberg, Ingunn; Olsen, Alexander; Gravdahl, Gøril Bruvik. (2021) A biofeedback app for migraine: Development and usability study. JMIR Formative Research
  Vitenskapelig artikkel
• Follesø, Hanna Størksen; Austad, Sigrun Borgen; Olsen, Alexander; Saksvik-Lehouillier, Ingvild. (2021) The development, inter-rater agreement and performance of a hierarchical procedure for setting the rest-interval in actigraphy data. Sleep Medicine
  Vitenskapelig artikkel
• Karaliute, Migle; Saksvik, Simen Berg; Smevik, Hanne; Follestad, Turid; Einarsen, Cathrine Elisabeth; Vik, Anne. (2021) Methodology Matters: Comparing Approaches for Defining Persistent Symptoms after Mild Traumatic Brain Injury. Neurotrauma Reports
  Vitenskapelig artikkel
• Fordal, Linda; Stenberg, Jonas; Iverson, Grant L.; Saksvik, Simen Berg; Karaliute, Migle; Vik, Anne. (2021) Trajectories of Persistent Postconcussion Symptoms and Factors Associated With Symptom Reporting After Mild Traumatic Brain Injury. Archives of Physical Medicine and Rehabilitation
  Vitenskapelig artikkel
• Damanskyy, Yevhen; Olsen, Alexander; Hollup, Stig Arvid. (2021) Prior Prognostic Expectations as a Potential Predictor in Neurofeedback Training. Journal of Cognitive Enhancement
  Vitenskapelig artikkel
• Tahmasian, Masoud; Aleman, André; Andreassen, Ole; Arab, Zahra; Baillet, Marion; Benedetti, Francesco. (2021) ENIGMA-Sleep: Challenges, opportunities, and the road map. Journal of Sleep Research
  Vitenskapelig oversiktsartikkel/review
• Saksvik-Lehouillier, Ingvild; Langvik, Eva ; Saksvik, Simen Berg; Kallestad, Håvard; Follesø, Hanna Størksen; Austad, Sigrun Borgen. (2021) High neuroticism is associated with reduced negative affect following sleep deprivation. Personality and Individual Differences
  Vitenskapelig artikkel
• Fure, Silje Christine Reistad; Howe, Emilie; Spjelkavik, Øystein; Røe, Cecilie; Rike, Per-Ola; Olsen, Alexander. (2021) Post-concussion symptoms three months after mild-to-moderate TBI: characteristics of sick-listed patients referred to specialized treatment and consequences of intracranial injury. Brain Injury
  Vitenskapelig artikkel
• Fure, Silje Christine Reistad; Howe, Emilie; Andelic, Nada; Brunborg, Cathrine; Sveen, Unni; Røe, Cecilie. (2021) Cognitive and vocational rehabilitation after mild-to-moderate traumatic brain injury: A randomised controlled trial. Annals of Physical and Rehabilitation Medicine
  Vitenskapelig artikkel
• Sørengaard, Torhild Anita; Olsen, Alexander; Langvik, Eva ; Saksvik-Lehouillier, Ingvild. (2021) Associations between Sleep and Work-Related Cognitive and Emotional Functioning in Police Employees. SH@W Safety and Health at Work
  Vitenskapelig artikkel
• Kliem, Elisabeth; Gjestad, Elise Ødegård; Ryum, Truls; Olsen, Alexander; Thommessen, Bente; Indredavik, Bent. (2021) The Relationship of Psychiatric Symptoms with Performance-Based and Self-Reported Cognitive Function After Ischemic Stroke. Journal of the International Neuropsychological Society
  Vitenskapelig artikkel
• Dennis, Emily L.; Caeyenberghs, Karen; Hoskinson, Kristen R; Merkley, Tricia L; Suskauer, Stacy J; Asarnow, Robert F. (2021) White Matter Disruption in Pediatric Traumatic Brain Injury: Results From ENIGMA Pediatric Moderate to Severe Traumatic Brain Injury. Neurology
  Vitenskapelig artikkel

2020

• Thompson, Paul M.; Jahanshad, Neda; Ching, Christopher R.K.; Salminen, Lauren E.; Thomopoulos, Sophia I.; Bright, Joanna. (2020) ENIGMA and global neuroscience: A decade of large-scale studies of the brain in health and disease across more than 40 countries. Translational Psychiatry
  Vitenskapelig oversiktsartikkel/review
• Saksvik, Simen Berg; Karaliute, Migle; Kallestad, Håvard; Follestad, Turid; Asarnow, Robert F.; Vik, Anne. (2020) The prevalence and stability of sleep-wake disturbance and fatigue throughout the first year after mild traumatic brain injury. Journal of Neurotrauma
  Vitenskapelig artikkel
• Dennis, Emily L.; Caeyenberghs, Karen; Asarnow, Robert F.; Babikian, Talin; Bartnik-Olson, Brenda L.; Bigler, Erin D. (2020) Challenges and opportunities for neuroimaging in young patients with traumatic brain injury: a coordinated effort towards advancing discovery from the ENIGMA pediatric moderate/severe TBI group. Brain Imaging and Behavior
  Vitenskapelig artikkel
• Dennis, Emily L.; Baron, David; Bartnik-Olson, Brenda L.; Caeyenberghs, Karen; Esopenko, Carrie; Hillary, Frank G.. (2020) ENIGMA brain injury: Framework, challenges, and opportunities. Human Brain Mapping
  Vitenskapelig oversiktsartikkel/review
• Stubberud, Anker; Tronvik, Erling Andreas; Olsen, Alexander; Gravdahl, Gøril Bruvik; Linde, Mattias. (2020) Biofeedback Treatment App for Pediatric Migraine: Development and Usability Study. Headache
  Vitenskapelig artikkel
• Vethe, Daniel; Scott, Janine Linda; Engstrøm, Morten; Salvesen, Øyvind; Sand, Trond; Olsen, Alexander. (2020) The evening light environment in hospitals can be designed to produce less disruptive effects on the circadian system and improve sleep. Sleep
  Vitenskapelig artikkel
• Karlsen, Rune Hatlestad; Saksvik, Simen Berg; Stenberg, Jonas; Lundervold, Astri J. ; Olsen, Alexander; Rautio, Ida. (2020) Examining the Subacute Effects of Mild Traumatic Brain Injury Using a Traditional and Computerized Neuropsychological Test Battery. Journal of Neurotrauma
  Vitenskapelig artikkel
• Olsen, Alexander; Babikian, Talin; Bigler, Erin D.; Caeyenberghs, Karen; Conde, Virginia; Dams-O’Connor, Kristen. (2020) Toward a global and reproducible science for brain imaging in neurotrauma: the ENIGMA adult moderate/severe traumatic brain injury working group. Brain Imaging and Behavior
  Vitenskapelig artikkel
• Saksvik-Lehouillier, Ingvild; Saksvik, Simen Berg; Dahlberg, Berit Johanna; Tanum, Tiril Kristine; Ringen, Heidi; Karlsen, Håvard Rudi. (2020) Mild to moderate partial sleep deprivation is associated with increased impulsivity and decreased positive affect in young adults. Sleep
  Vitenskapelig artikkel
• Olsen, Alexander; Saksvik, Simen Berg; Skandsen, Toril. (2020) Hjernerystelser kan gi langvarige søvnproblemer. Aftenposten Viten
  Populærvitenskapelig artikkel
• Skandsen, Toril; Stenberg, Jonas; Follestad, Turid; Karaliute, Migle; Saksvik, Simen Berg; Einarsen, Cathrine Elisabeth. (2020) Personal factors associated with postconcussion symptoms 3 months after mild traumatic brain injury. Archives of Physical Medicine and Rehabilitation
  Vitenskapelig artikkel
• Karlsen, Rune Hatlestad; Karr, Justin E.; Saksvik, Simen Berg; Lundervold, Astri J. ; Hjemdal, Odin; Olsen, Alexander. (2020) Examining 3-month test-retest reliability and reliable change using the Cambridge Neuropsychological Test Automated Battery. Applied neuropsychology: Adult
  Vitenskapelig artikkel
• Olsen, Alexander; Babikian, Talin; Dennis, Emily L.; Ellis-Blied, Monica U.; Giza, Christopher C.; Marion, Sarah DeBoard. (2020) Functional Brain Hyperactivations Are Linked to an Electrophysiological Measure of Slow Interhemispheric Transfer Time after Pediatric Moderate/Severe Traumatic Brain Injury. Journal of Neurotrauma
  Vitenskapelig artikkel
• Stubberud, Anker; Linde, Mattias; Brenner, Eiliv; Heier, Martin; Olsen, Alexander; Aamodt, Anne Hege. (2020) Self-administered biofeedback treatment app for pediatric migraine: A randomized pilot study. Brain and Behavior
  Vitenskapelig artikkel

2019

• Stenberg, Jonas; Håberg, Asta; Follestad, Turid; Olsen, Alexander; Iverson, Grant L.; Terry P., Douglas. (2019) Cognitive Reserve Moderates Cognitive Outcome After Mild Traumatic Brain Injury. Archives of Physical Medicine and Rehabilitation
  Vitenskapelig artikkel

2018

• Stubberud, Anker; Omland, Petter Moe; Tronvik, Erling Andreas; Olsen, Alexander; Sand, Trond; Linde, Mattias. (2018) Wireless Surface Electromyography and Skin Temperature Sensors for Biofeedback Treatment of Headache: Validation Study with Stationary Control Equipment. JMIR Biomedical Engineering
  Vitenskapelig artikkel
• Dennis, Emily L.; Caeyenberghs, Karen; Babikian, Talin; Olsen, Alexander; Giza, Christopher C.; Asarnow, Robert F.. (2018) ENIGMA pediatric msTBI: Preliminary results from meta-analysis of diffusion MRI. Proceedings of SPIE, the International Society for Optical Engineering
  Vitenskapelig artikkel
• Omland, Petter Moe; Tronvik, Erling Andreas; Olsen, Alexander; Sand, Trond; Linde, Mattias. (2018) Wireless Surface Electromyography and Skin Temperature Sensors for Biofeedback Treatment of Headache: Validation Study with Stationary Control Equipment. JMIR Biomedical Engineering
  Vitenskapelig artikkel
• Hollund, Ingrid Marie Husby; Olsen, Alexander; Skranes, Jon Sverre; Brubakk, Ann-Mari; Håberg, Asta; Eikenes, Live. (2018) White matter alterations and their associations with motor function in young adults born preterm with very low birth weight. NeuroImage: Clinical
  Vitenskapelig artikkel
• Grambaite, Ramune; Sundby, Jørgen; Lundervold, Astri; Solbakk, Anne-Kristin; Hessen, Erik; Olsen, Alexander. (2018) Undervisning i klinisk nevropsykologi på profesjonsstudiene i Norge. Nevropsykologi : Medlemsblad for Norsk Nevropsykologisk Forening
  Vitenskapelig oversiktsartikkel/review
• Dennis, Emily L.; Babikian, Talin; Alger, Jeffry; Rashid, Faisal; Villalon-Reina, Julio E.; Jin, Yan. (2018) Magnetic resonance spectroscopy of fiber tracts in children with traumatic brain injury: A combined MRS - Diffusion MRI study. Human Brain Mapping
  Vitenskapelig artikkel
• Solheim, Brandy; Olsen, Alexander; Kallestad, Håvard; Langsrud, Knut; Bjorvatn, Bjørn; Gradisar, Michael. (2018) Cognitive performance in DSWPD patients upon awakening from habitual sleep compared with forced conventional sleep. Journal of Sleep Research
  Vitenskapelig artikkel
• Babikian, Talin; Alger, Jeffry R.; Ellis-Blied, Monica U.; Giza, Christopher C.; Dennis, Emily; Olsen, Alexander. (2018) Whole Brain Magnetic Resonance Spectroscopic Determinants of Functional Outcomes in Pediatric Moderate/Severe Traumatic Brain Injury. Journal of Neurotrauma
  Vitenskapelig artikkel
• Stenberg, Jonas; Håberg, Asta; Olsen, Alexander; Follestad, Turid; Iverson, Grant L.; Saksvik, Simen Berg. (2018) Cognitive Reserve and the Interaction between Premorbid IQ and Mild Traumatic Brain Injury. Journal of Neurotrauma
  Sammendrag/abstract
• Stenberg, Jonas; Håberg, Asta; Olsen, Alexander; Follestad, Turid; Iverson, Grant L.; Karaliute, Migle. (2018) Neurocognitive Functioning after Mild Traumatic Brain Injury: A Prospective Study Exploring Subgroups Reporting Symptoms. Journal of Neurotrauma
  Sammendrag/abstract

2017

• Dennis, Emily L; Rashid, Faisal; Ellis, Monica U; Babikian, Talin; Vlasova, Roza M; Villalon-Reina, Julio E. (2017) Diverging white matter trajectories in children after traumatic brain injury. Neurology
  Vitenskapelig artikkel
• Bergersen, Kjersti; Halvorsen, Joar Øveraas; Tryti, Einar Aagaard; Taylor, Solveig Isabel; Olsen, Alexander. (2017) A systematic literature review of psychotherapeutic treatment of prolonged symptoms after mild traumatic brain injury. Brain Injury
  Vitenskapelig oversiktsartikkel/review
• Karaliute, Migle; Olsen, Alexander; Saksvik, Simen Berg; Einarsen, Cathrine Elisabeth; Vik, Anne; Håberg, Asta. (2017) Post-concussive symptoms the first year after mild traumatic brain injury: Preliminary results from a large prospective cohort study. Brain Injury
  Sammendrag/abstract
• Wohlwend, Martin Rainer; Olsen, Alexander; Håberg, Asta; Palmer, Helen. (2017) Exercise Intensity-Dependent Effects on Cognitive Control Function during and after Acute Treadmill Running in Young Healthy Adults. Frontiers in Psychology
  Vitenskapelig artikkel
• Olsen, Alexander; Dennis, Emily L; Evensen, Kari Anne Indredavik; Hollund, Ingrid Marie Husby; Løhaugen, Gro; Thompson, Paul M. (2017) Preterm birth leads to hyper-reactive cognitive control processing and poor white matter organization in adulthood. NeuroImage
  Vitenskapelig artikkel

2016

• Aasen, Ida Emilia Sareneva; Håberg, Asta; Olsen, Alexander; Brubakk, Ann-Mari; Evensen, Kari Anne Indredavik; Sølsnes, Anne Elisabeth. (2016) The relevance of the irrelevant: Attention and task-set adaptation in prematurely born adults. Clinical Neurophysiology
  Vitenskapelig artikkel
• Ellis, Monica U.; DeBoard Marion, Sarah; McArthur, David L.; Babikian, Talin; Giza, Christopher; Kernan, Claudia L.. (2016) The UCLA study of children with moderate-to-severe traumatic brain injury: Event-related potential measure of interhemispheric transfer time. Journal of Neurotrauma
  Vitenskapelig artikkel
• Moen, Kent Gøran; Vik, Anne; Olsen, Alexander; Skandsen, Toril; Håberg, Asta; Evensen, Kari Anne Indredavik. (2016) Traumatic axonal injury: Relationships between lesions in the early phase and diffusion tensor imaging parameters in the chronic phase of traumatic brain injury. Journal of Neuroscience Research
  Vitenskapelig artikkel
• Husby, Ingrid Marie; Stray, Kaia Mølbach-Thellefsen; Olsen, Alexander; Lydersen, Stian; Indredavik, Marit Sæbø; Brubakk, Ann-Mari. (2016) Long-term follow-up of mental health, health-related quality of life and associations with motor skills in young adults born preterm with very low birth weight. Health and Quality of Life Outcomes
  Vitenskapelig artikkel

2015

• Finnanger, Torun Gangaune; Olsen, Alexander; Skandsen, Toril; Lydersen, Stian; Vik, Anne; Evensen, Kari A. Indredavik. (2015) Life after adolescent and adult moderate and severe traumatic brain injury: self-reported executive, emotional, and behavioural function 2-5 years after injury. Behavioural Neurology
  Vitenskapelig artikkel
• Brunner, Jan Ferenc; Olsen, Alexander; Aasen, Ida Emilia Sareneva; Løhaugen, Gro; Håberg, Asta; Kropotov, Yury. (2015) Neuropsychological parameters indexing executive processes are associated with independent components of ERPs. Neuropsychologia
  Vitenskapelig artikkel
• Olsen, Alexander; Brunner, Jan Ferenc; Evensen, Kari A. Indredavik; Finnanger, Torun Gangaune; Vik, Anne; Skandsen, Toril. (2015) Altered Cognitive Control Activations after Moderate-to-Severe Traumatic Brain Injury and Their Relationship to Injury Severity and Everyday-Life function. Cerebral Cortex
  Vitenskapelig artikkel
• Dennis, Emily L; Ellis, Monica U; Marion, Sarah D; Jin, Yan; Moran, Lisa; Olsen, Alexander. (2015) Callosal function in pediatric traumatic brain injury linked to disrupted white matter integrity. Journal of Neuroscience
  Vitenskapelig artikkel
• Håberg, Asta; Olsen, Alexander; Moen, Kent Gøran; Schirmer-Mikalsen, Kari; Visser, E; Finnanger, Torun Gangaune. (2015) White matter microstructure in chronic moderate-to-severe traumatic brain injury: Impact of acute-phase injury-related variables and associations with outcome measures. Journal of Neuroscience Research
  Vitenskapelig artikkel

2014

• Moen, Kine Therese; Jørgensen, Lone; Olsen, Alexander; Håberg, Asta; Skandsen, Toril; Vik, Anne. (2014) High-level mobility in chronic traumatic brain injury and its relationship with clinical variables and magnetic resonance imaging findings in the acute phase. Archives of Physical Medicine and Rehabilitation
  Vitenskapelig artikkel
• Solheim, Brandy; Langsrud, Knut; Kallestad, Håvard; Olsen, Alexander; Bjorvatn, Bjørn; Sand, Trond. (2014) Difficult morning awakening from rapid eye movement sleep and impaired cognitive function in delayed sleep phase disorder patients. Sleep Medicine
  Vitenskapelig artikkel
• Olsen, Alexander; Håberg, Asta; Landrø, Nils Inge. (2014) Cognitive control function and moderate-to-severe traumatic brain injury : functional and structural brain correlates. Doktoravhandlinger ved NTNU (372)
  Doktorgradsavhandling

2013

• Olsen, Alexander; Brunner, Jan Ferenc; Evensen, Kari A. Indredavik; de Cisneros, Benjamín Garzón Jiménez; Landrø, Nils Inge; Håberg, Asta. (2013) The Functional Topography and Temporal Dynamics of Overlapping and Distinct Brain Activations for Adaptive Task Control and Stable Task-set Maintenance during Performance of an fMRI-adapted Clinical Continuous Performance Test. Journal of Cognitive Neuroscience
  Vitenskapelig artikkel
• Brunner, Jan Ferenc; Hansen, Tor Ivar; Olsen, Alexander; Skandsen, Toril; Håberg, Asta; Kropotov, Yury. (2013) Long-term test-retest reliability of the P3 No Go wave and two independent components decomposed from the P3 No Go wave in a visual Go/NoGo task. International Journal of Psychophysiology
  Vitenskapelig artikkel
• Husby, Ingrid Marie; Skranes, Jon; Olsen, Alexander; Brubakk, Ann-Mari; Evensen, Kari A. Indredavik. (2013) Motor skills at 23 years of age in young adults born preterm with very low birth weight. Early Human Development
  Vitenskapelig artikkel

2012

• Halvorsen, Joar Øveraas; Johnson, Sverre Urnes; Olsen, Alexander; Hagen, Roger. (2012) Fokus på forskning: Psykologforeningens hovedsatsningsområde 2013–2016. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
  Leserinnlegg
• Brezova, Veronika; Olsen, Alexander; Skandsen, Toril; Vik, Anne; Håberg, Asta. (2012) Longitudinal study of grey and white matter changes from the acute to the chronic phase following moderate to severe TBI: volume changes related to duration of post-traumatic amnesia. Brain Injury
  Sammendrag/abstract

2011

• Gotaas, Gunnar; Hjemdal, Odin; Håberg, Asta; Olsen, Alexander. (2011) Depresjon blant pasienter med traumatisk hjerneskade i en norsk populasjon: forekomst og risikofaktorer. NTNU trykk
  Hovedfagsoppgave
• Evandt, Jorunn Kristiane Plambeck; Håberg, Asta; Olsen, Alexander. (2011) Factor Analysis of Measures Computed form Data Collected by Means of Continous Performence Test Applied to Patients with Traumatic Brain Injury and Healthy Controls. NTNU trykk
  Mastergradsoppgave

2010

• Halvorsen, Joar Øveraas; Olsen, Alexander; Stokke, Ragnhild Klingenberg. (2010) Fremdeles ubesvarte spørsmål. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
  Leserinnlegg
• Halvorsen, Joar Øveraas; Olsen, Alexander. (2010) Profesjonen i endring: Når kjøttvekt blir dødvekt. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
  Leserinnlegg
• Halvorsen, Joar Øveraas; Olsen, Alexander. (2010) Når kjøttvekt blir dødvekt. Tidsskrift for Norsk psykologforening (Psykologtidsskriftet)
  Leserinnlegg

2009

• Olsen, Alexander; Brunner, J; Skandsen, Toril; Berntsen, Erik Magnus; Rasmussen, Inge Andre; Håberg, Asta. (2009) SURVIVORS WITH CHRONIC SEVERE TRAUMATIC BRAIN INJURY HAVE SUBSTITUTION AND RECRUITMENT OF ADDITIONAL CORTICAL REGIONS DURING A MENTAL ARITHMETIC TASK. Journal of Neurotrauma
  Sammendrag/abstract
• Løvstad, Marianne; Holte, Ingvil; Olsen, Alexander. (2009) Koma og redusert bevissthet etter hjerneskade -Informasjonsbrosjyre for pårørende og omsorgsgivere. Sunnaas sykehus
  Oversatt bok