Atle Bjørnerud

Functional neural signatures of navigation impairment in early Alzheimer's Disease

This study identifies functional neural signatures of navigation impairment in early Alzheimer's Disease by linking biomarkers to specific brain activity patterns during navigation tasks.

Stable Individual Differences Dominate Adult Brain Volume Variation Until Later Life

This study examines how brain volume differences in adults are stable from young adulthood or change with age, using MRI data from 8,311 individuals.

Cortical thickness changes precede high levels of amyloid by at least seven years

The paper shows cortical thickness changes occur years before high amyloid levels in Alzheimer's disease, challenging the view that amyloid is the first imaging marker.

Normalization of MRI T1w between-scan effects for improved longitudinal volumetric estimates

This study introduces RIDA to reduce between-scan MRI intensity variations and improves longitudinal volume estimates, showing significant benefits for specific brain regions.

A robust intensity distribution alignment for harmonization of T1w intensity values

This paper introduces a method to normalize MRI intensity values across scans, improving consistency in volume measurements and spatial overlap between images.

Evidence for widespread alterations in cortical microstructure after 32 hours of sleep deprivation

This study shows that 32 hours of sleep deprivation increases the T1w/T2w ratio in specific cortical regions compared to a normal sleep-wake cycle.

Reliability and sensitivity of two whole-brain segmentation approaches included in FreeSurfer - ASEG and SAMSEG

This paper compares two whole-brain segmentation methods, ASEG and SAMSEG, in FreeSurfer, finding SAMSEG provides more reliable and sensitive measurements for detecting longitudinal changes and Alzheimer's disease-related atrophy.

Sleep and sleep deprivation differentially alter white matter microstructure: a mixed model design utilising advanced diffusion modelling

This study uses mixed models and advanced diffusion imaging to show that sleep deprivation and normal sleep-wake cycles differentially affect white matter microstructure.

ExploreASL: an image processing pipeline for multi-center ASL perfusion MRI studies

ExploreASL provides a standardized image processing pipeline for multi-center ASL MRI studies, improving reproducibility and enabling group-level statistical analysis across diverse clinical populations.

Waves of maturation and senescence in micro-structural MRI markers of human cortical myelination over the lifespan

The paper identifies age-related waves of cortical myelination and demyelination using micro-structural MRI markers in humans across the lifespan.