Academic article

• Julie Eirin Billing; Daniela Melitta Pfabigan; Elisabeth Kjelsvik Steinsvik et al. (2026). Associations between childhood behavior and current cognitive and emotional function in adults with irritable bowel syndrome—a cross sectional retrospective study. (external link)
• Julie Eirin Billing; Birgitte Berentsen Jacobsen; Arvid Lundervold et al. (2023). Cognitive function in patients with irritable bowel syndrome: impairment is common and only weakly correlated with depression/anxiety and severity of gastrointestinal symptoms. (external link)
• Astri J. Lundervold; Eline Margrethe Randulff Hillestad; Gülen Arslan Lied et al. (2023). Assessment of Self-Reported Executive Function in Patients with Irritable Bowel Syndrome Using a Machine-Learning Framework. (external link)
• Arvid Lundervold; Ben René Bjørsvik; Julie Eirin Billing et al. (2025). Brain Morphometry and Cognitive Features in the Prediction of Irritable Bowel Syndrome. (external link)
• Astri J. Lundervold; Julie Eirin Billing; Birgitte Berentsen Jacobsen et al. (2024). Decoding IBS: a machine learning approach to psychological distress and gut-brain interaction. (external link)

Conference poster

• Julie Eirin Billing; Birgitte Berentsen Jacobsen; Arvid Lundervold et al. (2023). Cognitive function in patients with irritable bowel syndrome: impairment is common and only weakly correlated with depression/anxiety and severity of gastrointestinal symptoms. (external link)

Conference lecture

• TE Johnsen; Eline Hillestad; Elisabeth Kjelsvik et al. (2023). Redusert eksekutiv funksjon hos pasienter med IBS. (external link)

See a complete overview of publications in NVA.