Bakgrunn og aktiviteter
Alexander Olsen is an Associate Professor at the Department of Psychology at the Norwegian University of Science and Technology, and a Clinical Psychologist at St. Olavs Hospital, Trondheim University Hospital. Clinically, he is working with neuropsychological assessments of children, adolescents and adults with acquired brain injury. In his research, he investigates the consequences of brain injury and neurotrehabilitation by combining advanced neuroimaging techniques with neurocognitive and clinical measures. He has a particular interest in investigating the neural correlates of cognitive control function, both in various patient groups, as well as in healthy individuals. His main research activities are part of research programs in Trondheim TBI Group (www.ntnu.edu/inm/tbi) and Trondheim fMRI Group (www.ntnu.edu/isb/fmri). In addition, Dr. Olsen holds a position as a project scientist at the Department of Psychiatry and Biobehavioral Sciences at UCLA, where he is involved in research activities in the Pediatric Traumatic Brain Injury Research Program (www.semel.ucla.edu/tbi/our-team). Dr. Olsen is involved in research activities on traumatic brain injury both in Norway and at UCLA, and is passionate about facilitating international collaboration in order to improve the quality of scientific research and health care for this patient group.
Vitenskapelig, faglig og kunstnerisk arbeid
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- (2017) A systematic literature review of psychotherapeutic treatment of prolonged symptoms after mild traumatic brain injury. Brain Injury.
- (2017) Exercise Intensity-Dependent Effects on Cognitive Control Function during and after Acute Treadmill Running in Young Healthy Adults. Frontiers in Psychology.
- (2016) The relevance of the irrelevant: Attention and task-set adaptation in prematurely born adults. Clinical Neurophysiology. vol. 127 (10).
- (2016) The UCLA study of children with moderate-to-severe traumatic brain injury: Event-related potential measure of interhemispheric transfer time. Journal of Neurotrauma. vol. 33 (11).
- (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. vol. 14:56.
- (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. vol. 94.
- (2015) Neuropsychological parameters indexing executive processes are associated with independent components of ERPs. Neuropsychologia. vol. 66.
- (2015) Callosal function in pediatric traumatic brain injury linked to disrupted white matter integrity. Journal of Neuroscience. vol. 35 (28).
- (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. vol. 2015:329241.
- (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. vol. 93 (7).
- (2015) Altered Cognitive Control Activations after Moderate-to-Severe Traumatic Brain Injury and Their Relationship to Injury Severity and Everyday-Life function. Cerebral Cortex. vol. 25 (8).
- (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. vol. 95 (10).
- (2014) Difficult morning awakening from rapid eye movement sleep and impaired cognitive function in delayed sleep phase disorder patients. Sleep Medicine. vol. 15 (10).
- (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. vol. 89 (1).
- (2013) Motor skills at 23 years of age in young adults born preterm with very low birth weight. Early Human Development. vol. 89 (9).
- (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. vol. 25 (6).
- (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. vol. 26 (4-5).
- (2009) SURVIVORS WITH CHRONIC SEVERE TRAUMATIC BRAIN INJURY HAVE SUBSTITUTION AND RECRUITMENT OF ADDITIONAL CORTICAL REGIONS DURING A MENTAL ARITHMETIC TASK. Journal of Neurotrauma. vol. 26 (8).
- (2014) Cognitive control function and moderate-to-severe traumatic brain injury : functional and structural brain correlates. 2014. ISBN 978-82-326-0660-3. Doktoravhandlinger ved NTNU (372).