Biol Psychiatry Cogn Neurosci Neuroimaging
June 2025
Background: Impulsivity in highly heritable attention-deficit/hyperactivity disorder (ADHD) has been studied using neural activity via functional magnetic resonance imaging (fMRI) or genetic data, but rarely with multivariate methods that link both. We investigated coupled neural activity and gene expression signatures, using parallel independent component analysis (pICA) and ABCD (Adolescent Brain Cognitive Development) Study data.
Methods: Children with ADHD (n = 394; 63% male) and healthy control children (n = 1000; 47% male) of European ancestry were included.
Biol Psychiatry Cogn Neurosci Neuroimaging
September 2025
Background: In this study, we examined whether a deep neural network (DNN), trained to predict the general psychopathology factor (p factor) using functional magnetic resonance imaging (fMRI) data from adolescents in the ABCD (Adolescent Brain Cognitive Development) Study, would generalize to Korean adolescents.
Methods: We trained a scanner-generalization neural network (SGNN) to predict p factor scores from resting-state functional connectivity (RSFC) data of 6905 ABCD Study adolescents, controlling for MRI scanner-related confounds. Then, we transferred the pretrained SGNN to a DNN to predict p factor scores for 125 adolescents, including healthy individuals and individuals with major depressive disorder, using data from Seoul National University Hospital (SNUH).
Quantitative susceptibility mapping (QSM) is frequently employed in investigating brain iron related to brain development and diseases within deep gray matter (DGM). Nonetheless, the acquisition of whole-brain QSM data is time-intensive. An alternative approach, focusing the QSM specifically on areas of interest such as the DGM by reducing the field-of-view (FOV), can significantly decrease scan times.
View Article and Find Full Text PDFBackground: Several genome-wide association studies (GWAS) have been performed to identify variants related to chronic diseases. Somatic variants in cancer tissues are associated with cancer development and prognosis. Expression quantitative trait loci (eQTL) and methylation QTL (mQTL) analyses were performed on chronic disease-related variants in TCGA dataset.
View Article and Find Full Text PDFBMC Med Educ
February 2019
Background: The purpose of this study was to examine the relationship between Korean pharmacy students' empathy and psychological need satisfaction and their levels of burnout and psychological well-being, using structural equation modeling.
Methods: The participants were 452 pharmacy students from five South Korean universities. The Jefferson Scale of Empathy (Health Professions Students version), the Activity-Feeling States Scale, and the Maslach Burnout Inventory-Student Survey were used to assess empathy, psychological need satisfaction, and burnout, respectively.
Am J Pharm Educ
June 2015
Objective: To validate the Korean-translated Jefferson Scale of Empathy-Health Professions Student version (JSE-HPS) and to investigate the empathy levels of pharmacy students in South Korea.
Methods: The JSE-HPS and the Interpersonal Reactivity Index (IRI) were administered to 452 pharmacy students in their second and third years at 5 Korean universities. Confirmatory factor analysis (CFA), correlations, and one-way ANOVAs were conducted for data analyses.