Hedyeh Ahmadi

Sources of outdoor air pollution exposure and child brain network development across the United States

This study links childhood exposure to different sources of PM2.5 pollution to changes in brain network connectivity across the U.S., with regional differences observed.

Developmental Differences in White Matter Microarchitecture in Youth with ADHD: Longitudinal Findings from the ABCD Study

This study examines how ADHD affects white matter microarchitecture in youth over time using diffusion MRI and finds reduced isotropic diffusion in ADHD individuals.

Ambient Pollution Components and Sources Associated with Hippocampal Architecture and Memory in Pre-Adolescents

The paper examines how ambient air pollution components and sources affect hippocampal structure and memory in pre-adolescents using data from the Adolescent Brain Cognitive Development Study.

Genetic Architecture of Perivascular Space Morphology in the Pediatric Brain

The paper identifies genetic associations with perivascular space morphology in children using MRI and genomics data from the Adolescent Brain Cognitive Development Study.

Prefrontal working memory activity partially mediates link between enriched neighborhood environments and episodic memory among 9-13-year-olds

The paper examines how enriched neighborhood environments affect episodic memory in children through prefrontal cortex activity.

Sex and gender differences in perivascular space in early adolescence

This study examines sex and felt-gender differences in perivascular space (PVS) volume and count in adolescents, finding that felt-gender improves model fit for PVS count and both sex and felt-gender are associated with PVS volume and count.

Spatiotemporal patterns in cortical development: Age, puberty, and individual variability from 9 to 13 years of age

This study examines spatiotemporal patterns of cortical development along a sensorimotor-to-association axis in adolescents, finding age-related changes and significant individual variability influenced by sex and puberty.

Estimating individual-level changes in functional brain connectivity and correspondence with topology changes

The paper evaluates six change scores for functional brain connectivity using ABCD Study data to determine their effectiveness in capturing topology changes over time.

Effects of one-night partial sleep deprivation on perivascular space volume fraction: Findings from the Stockholm Sleepy Brain Study

This study examines the effects of one-night partial sleep deprivation on perivascular space volume fraction using the Stockholm Sleepy Brain Study, finding no significant overall association but some interactions that did not survive multiple comparisons.

Amygdala Subregion Volumes and Apportionment in Preadolescents -- Associations with Age, Sex, and Body Mass Index

The paper examines amygdala subregion volumes and apportionment in preadolescents, finding age-related expansion, sex differences, and associations with BMI.

Sleep duration and efficiency moderate the effects of prenatal and childhood ambient pollutant exposure on global white matter microstructural integrity in adolescence

The paper examines how sleep duration and efficiency moderate the impact of prenatal and childhood air pollution on white matter integrity in adolescents.

More similarity than difference: comparison of within- and between-sex variance in early adolescent brain structure

This paper compares within- and between-sex variance in early adolescent brain structure and finds more similarity than difference between sexes.

Sex, gender diversity, and brain structure in children ages 9 to 11 years old

This study examines the relationship between sex, gender diversity, and brain structure in children aged 9-11, finding that sex explains some variance while gender diversity does not independently predict neurostructural differences.