Hasse Karlsson

Across 15 cohorts (birth to 24 years), 20 epigenetic clocks and eight brain age models predicted chronological age modestly, stabilizing by middle childhood; their age residuals were weakly associated.

This study links gut transit time, inferred from stool consistency, to microbial metabolites and microbiota in infants, showing associations with breastfeeding, bile acid metabolism, and short-chain fatty acids.

This study examines the relationship between effortful control and cortical brain structure in 5-year-olds using the FinnBrain cohort, finding specific brain regions associated with EC subscales.

The paper links early language development trajectories to gray matter density in the right superior frontal gyrus at age five using longitudinal data from the FinnBrain Birth Cohort Study.

This study uses functional connectome harmonics to analyze neonatal brain gradients and finds that power and energy metrics differ between term and preterm neonates, predicting postmenstrual age.

The paper applies Functional Connectome Harmonics and Leading Eigenvector Dynamics Analysis to resting-state fMRI data from children to characterize preadolescent brain network organization.

This study examines how human milk metabolites relate to the infant gut microbiome and metabolome over time, finding time-dependent associations and differential influences based on dietary changes.

skiftiTools enables statistical analysis and visualization of TBSS-derived diffusion MRI data using R, supporting advanced modeling and data manipulation.

This study transfers exuberant toddler gut microbiota to rats, increasing their exploratory behavior without affecting locomotion or social behavior.

This study examines the structural brain correlates of speech disfluency in 5-year-olds, finding associations between grey matter volume and disfluency without significant sex differences.

This study identifies two ASD subgroups with distinct brain morphology using cross-cultural datasets, highlighting key brain regions associated with subgroup characteristics and autistic traits.

The paper links neonatal white matter microstructure to attention disengagement from fearful faces in infants using diffusion MRI and eye tracking.

The paper examines the association between maternal depressive symptoms and left amygdala connectivity in 5-year-olds, finding a positive link with local ReHo values.

The paper examines how maternal depressive symptoms and hair cortisol concentration during pregnancy predict neonatal corpus callosum integrity using MRI and DTI data.

This study finds a positive association between maternal pre-pregnancy BMI and infant left caudate nucleus mean diffusivity, suggesting in utero exposure to maternal adiposity may impact brain development.

This study examines the relationship between neonatal amygdala microstructure and attention to emotional faces, finding a negative association between amygdala mean diffusivity and disengagement from fearful faces.

The paper introduces a multi-contrast neonatal brain template and atlases to improve image processing and spatial normalization in neonatal neuroimaging.

The paper investigates the link between attentional bias toward fearful faces, maternal postnatal distress, and white matter microstructure in 5-year-old females using DTI and eye-tracking data.

This study examines how maternal prenatal distress affects neonatal brain network dynamics, finding reduced stability in the frontoparietal network.

The paper evaluates the effect of diffusion encoding directions on DTI scalar estimates in neonates using TBSS analysis and finds negligible differences with 24 or more directions.

The paper examines how childhood maltreatment affects sperm small non-coding RNA and DNA methylation profiles in humans, identifying specific epigenetic changes linked to trauma exposure.

The paper finds a negative association between infant left amygdala volume and fecal microbiota alpha diversity in early life.

This study examines the long-term effects of prenatal synthetic glucocorticoid exposure on adolescent brain structure and function using MRI, finding no structural differences but altered functional connectivity.

The paper uses tract-based spatial statistics to examine sex differences, lateralization, and age-related white matter development in infants and 5-year-olds using diffusion tensor imaging.

The paper examines the association between parental childhood maltreatment and offspring left amygdala volume in early infancy using a birth cohort study.

This study links paternal childhood maltreatment exposure to increased neonate supratentorial grey matter volume, while maternal exposure and BMI show less significant associations.

This paper evaluates the feasibility of using FreeSurfer for processing T1-weighted brain images of 5-year-olds, showing minor effects of manual edits and recommending quality assessment for reliable segmentation.

The paper introduces brain charts as a standardized resource for benchmarking brain morphology across the human lifespan using MRI data from a large and diverse cohort.

This study compares FSL-FIRST and FreeSurfer automated subcortical segmentation tools against manual segmentation in 5-year-olds, finding FSL-FIRST more accurate for most structures but with overestimation issues for small ones.