Browsing NTNU Open by Author "Hansen, Tor Ivar"
Now showing items 1-18 of 18
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5 Years of Exercise Intervention Did Not Benefit Cognition Compared to the Physical Activity Guidelines in Older Adults, but Higher Cardiorespiratory Fitness Did. A Generation 100 Substudy
Sokołowski, Daniel; Hansen, Tor Ivar; Rise, Henning Hoel; Reitlo, Line Skarsem; Wisløff, Ulrik; Stensvold, Dorthe; Håberg, Asta (Peer reviewed; Journal article, 2021)Background: Aerobic exercise is proposed to attenuate cognitive decline in aging. We investigated the effect of different aerobic exercise interventions and cardiorespiratory fitness (CRF) upon cognition throughout a 5-year ... -
Allocentric representation in the human amygdala and ventral visual stream
Evensmoen, Hallvard Røe; Rimol, Lars Morten; Winkler, Anderson M.; Betzel, Richard; Hansen, Tor Ivar; Nili, Hamid; Håberg, Asta (Peer reviewed; Journal article, 2021)The hippocampus and the entorhinal cortex are considered the main brain structures for allocentric representation of the external environment. Here, we show that the amygdala and the ventral visual stream are involved in ... -
Cognitive deficits associated with impaired awareness of hypoglycaemia in type 1 diabetes
Hansen, Tor Ivar; Olsen, Sandra Elise; Haferstrom, Elise CD; Sand, Trond; Frier, Brian; Håberg, Asta; Bjørgaas, Marit Ragnhild Rokne (Journal article; Peer reviewed, 2017)Aims/hypothesis The aim of this study was to compare cognitive function in adults with type 1 diabetes who have impaired awareness of hypoglycaemia with those who have normal awareness of hypoglycaemia. A putative ... -
Comparing web-based neuropsychological tests of verbal and spatial memory with standardized pen and paper versions
Haferstrom, Elise Christina Dolvik (Master thesis, 2013)In this study we studied if novel Internet versions of a verbal and a visuo-spatial test were comparable with the standard (i.e. pen and paper) versions of the test. On each of these two types of tests we wanted to see if ... -
Does risk of brain cancer increase with intracranial volume? A population-based case control study
Fyllingen, Even Hovig; Hansen, Tor Ivar; Jakola, Asgeir Store; Håberg, Asta; Salvesen, Øyvind; Solheim, Ole (Journal article; Peer reviewed, 2018)Background Glioma is the most common primary brain tumor and is believed to arise from glial stem cells. Despite large efforts, there are limited established risk factors. It has been suggested that tissue with more ... -
Exercise and cardiorespiratory fitness in the aging brain: evidence from the Generation 100 brain MRI substudy
Pani, Jasmine (Doctoral theses at NTNU;2022:267, Doctoral thesis, 2022)As we age, the body as well as the brain changes in shape and function. Some of these changes are common and defined as “typical aging”, others are pathological. The world’s population is growing older, and it is estimated ... -
How Does the Accuracy of Intracranial Volume Measurements Affect Normalized Brain Volumes? Sample Size Estimates Based on 966 Subjects from the HUNT MRI Cohort
Hansen, Tor Ivar; Brezova, Veronika; Eikenes, Live; Håberg, Asta; Vangberg, Torgil Riise (Peer reviewed; Journal article, 2015)BACKGROUND AND PURPOSE: The intracranial volume is commonly used for correcting regional brain volume measurements for variations in head size. Accurate intracranial volume measurements are important because errors will ... -
Intersections of Cognitive Performance, Physical Fitness, Sex, and Selection Bias: Insights from Web-Based Assessments
Sokołowski, Daniel Radosław (Doctoral theses at NTNU;2024:432, Doctoral thesis, 2024)Cognitive testing encompasses methods designed to measure mental capabilities such as memory, attention, processing speed, and problem-solving skills. Traditionally conducted through pen-and-paper assessments, the advent ... -
Is intracranial volume a risk factor for IDH-mutant low-grade glioma? A case-control study
Sagberg, Lisa Millgård; Fyllingen, Even Hovig; Hansen, Tor Ivar; Strand, Per Sveino; Håvik, Aril Løge; Sundstrøm, Terje; Corell, Alba; Jakola, Asgeir Store; Salvesen, Øyvind; Solheim, Ole (Peer reviewed; Journal article, 2022)Purpose Risk of cancer has been associated with body or organ size in several studies. We sought to investigate the relationship between intracranial volume (ICV) (as a proxy for lifetime maximum brain size) and risk of ... -
Long-term Effects of Seeding in an Alpine Environment: and a comparison of the effect of native Festuca ovina and non-native Festuca rubra on the establishment of native Betula nana
Hansen, Tor Ivar (Master thesis, 2011)As human induced disturbance in alpine ecosystems have increased, more knowledge is needed about the long-term effects of restoration efforts in such environments. There are benefits with using native species in restoration ... -
Marked effects of intracranial volume correction methods on sex differences in neuroanatomical structures: A HUNT MRI study
Pintzka, Carl Wolfgang Schøyen; Hansen, Tor Ivar; Evensmoen, Hallvard Røe; Håberg, Asta (Journal article; Peer reviewed, 2015)To date, there is no consensus whether sexual dimorphism in the size of neuroanatomical structures exists, or if such differences are caused by choice of intracranial volume (ICV) correction method. When investigating ... -
Memoro: Evaluation of core psychometric properties and usability of a new self-administered web-based neuropsychological test platform
Hansen, Tor Ivar (Doctoral thesis at NTNU;2016:277, Doctoral thesis, 2016) -
Mobile Assessments of Mood, Cognition, Smartphone-Based Sensor Activity, and Variability in Craving and Substance Use in Patients With Substance Use Disorders in Norway: Prospective Observational Feasibility Study
Lauvsnes, Anders Dahlen Forsmo; Hansen, Tor Ivar; Ankill, Sebastian Øiungen; Bae, Sang Won; Gråwe, Rolf W.; Braund, Taylor A.; Larsen, Mark; Langaas, Mette (Peer reviewed; Journal article, 2023)Background: Patients with substance use disorders (SUDs) are at increased risk for symptom deterioration following treatment, with up to 60% resuming substance use within the first year posttreatment. Substance use craving ... -
Patient-reported cognitive function before and after glioma surgery
Schei, Stine; Solheim, Ole; Salvesen, Øyvind; Hansen, Tor Ivar; Sagberg, Lisa Millgård (Peer reviewed; Journal article, 2022)Background Little is known about the extent to which glioma patients experience subjective changes in cognitive function following surgery. We sought to assess patient-reported cognitive function before and after glioma ... -
Poor Response Inhibition and Symptoms of Inattentiveness Are Core Characteristics of Lifetime Illicit Substance Use among Young Adults in the General Norwegian Population: The HUNT Study
Lauvsnes, Anders Dahlen Forsmo; Gråwe, Rolf W.; Hansen, Tor Ivar; Langaas, Mette; Håberg, Asta (Journal article; Peer reviewed, 2022)Background Impairments in neurocognitive functioning are associated with substance use behavior. Previous studies in neurocognitive predictors of substance use typically use self-report measures rather than neuropsychological ... -
The effect of cardiorespiratory fitness, metabolic syndrome and cerebro-cardiovascular disease on cognition in older adults.
Bjøralt, Stine (Master thesis, 2014)Background: Numerous studies have reported on the positive influence of superior physical health on the preservation of cognitive functions as we age. For ekxample, serveral exercise interventions of varying lengths aiming ... -
Traumatic Brain Injury Assessment: Sensitivity and Specificity with Inclusion of QEEG Parameters
Hansen, Tor Ivar (Master thesis, 2011)Addressing issues with sensitivity and specificity in TBI assessment this study compared the performance on neuropsychological tests and results from qEEG assessment between a heterogeneous TBI (N=20) group and a matched ... -
Visual function correlates with neurodevelopment in a population cohort of school-aged children born extremely preterm
Ingvaldsen, Sigrid Hegna; Hansen, Tor Ivar; Håberg, Asta; Moholdt, Viggo Andreas; Evensen, Kari Anne Indredavik; Dammann, Olaf; Austeng, Dordi Kristine; Morken, Tora Sund (Peer reviewed; Journal article, 2023)Aim To investigate visual function and neurodevelopment in a geographically defined population cohort of school-aged children born extremely preterm. Methods All children born extremely preterm in Central Norway between ...