Publications by authors named "H K Ihm"

Background: Transcranial direct current stimulation (tDCS) is a promising treatment for major depressive disorder (MDD). This study evaluated its antidepressant and cognitive effects as a safe, effective, home-based therapy for MDD.

Methods: This double-blind, sham-controlled, randomized trial divided participants into low-intensity (1 mA,  = 47), high-intensity (2 mA,  = 49), and sham ( = 45) groups, receiving 42 daily tDCS sessions, including weekends and holidays, targeting the dorsolateral prefrontal cortex for 30 minutes.

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Creativity is known to be heritable and exhibits familial aggregation with psychiatric disorders; however, the complex nature of their relationship has not been well-established. In the present study, we demonstrate that using an expanded and validated machine learning (ML)-based phenotyping of occupational creativity (OC) can allow us to further understand the trait of creativity, which was previously difficult to define and study. We conducted the largest genome-wide association study (GWAS) on OC with 241,736 participants from the UK Biobank and identified 25 lead variants that have not yet been reported and three candidate causal genes that were previously associated with educational attainment and psychiatric disorders.

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Patients with mood disorders commonly manifest comorbid psychiatric disorders, including attention-deficit/hyperactivity disorder (ADHD). However, few studies have evaluated ADHD symptoms in this population. The current study aimed to explore the network structure of ADHD symptomology and identify central symptoms in patients with mood disorders.

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Objective: Mood instability (MI) is a clinically significant trait associated with psychiatric disorders. However, there are no concise measurements to evaluate MI. The initial Mood Instability Questionnaire-Trait (MIQ-T) was developed to fill this gap.

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Article Synopsis
  • The study explores how childhood trauma and interpersonal sensitivity contribute to mood disorders by comparing 775 patients with major depressive disorder and bipolar disorders against 734 control subjects.
  • Results show that patients with bipolar II disorder exhibit significantly higher interpersonal sensitivity than those with major depressive disorder or bipolar I disorder, indicating a strong link between childhood trauma experiences and mood disorders.
  • Emotional abuse is identified as having the strongest correlation with interpersonal sensitivity, suggesting that the types of childhood trauma experienced can differently affect mood disorders, and the findings aim to inform future research for better treatment strategies.
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