Mathias Valstad

• Ayorech, Ziada; Torvik, Fartein Ask; Cheesman, Rosa; Eilertsen, Espen M.; Valstad, Mathias & Bjørndal, Ludvig Daae [Vis alle 9 forfattere av denne artikkelen] (2024). The structure of psychiatric comorbidity without selection and assortative mating. Translational Psychiatry. ISSN 2158-3188. 14(1), s. 1–9. doi: 10.1038/s41398-024-02768-4.
• Slapø, Nora Berz; Nerland, Stener; Jørgensen, Kjetil Nordbø; Mørch-Johnsen, Lynn Egeland; Pettersen, Johanne Hagen & Roelfs, Daniel [Vis alle 22 forfattere av denne artikkelen] (2023). Auditory Cortex Thickness Is Associated With N100 Amplitude in Schizophrenia Spectrum Disorders. Schizophrenia Bulletin Open. ISSN 2632-7899. 4(1). doi: 10.1093/schizbullopen/sgad015. Fulltekst i vitenarkiv
• Slapø, Nora Berz; Jørgensen, Kjetil Nordbø; Elvsåshagen, Torbjørn; Nerland, Stener; Roelfs, Daniel & Valstad, Mathias [Vis alle 18 forfattere av denne artikkelen] (2023). Relationship between function and structure in the visual cortex in healthy individuals and in patients with severe mental disorders. Psychiatry Research : Neuroimaging. ISSN 0925-4927. 332. doi: 10.1016/j.pscychresns.2023.111633. Fulltekst i vitenarkiv Vis sammendrag

  Patients with schizophrenia spectrum disorders (SCZspect) and bipolar disorders (BD) show impaired function in the primary visual cortex (V1), indicated by altered visual evoked potential (VEP). While the neural substrate for altered VEP in these patients remains elusive, altered V1 structure may play a role. One previous study found a positive relationship between the amplitude of the P100 component of the VEP and V1 surface area, but not V1 thickness, in a small sample of healthy individuals. Here, we aimed to replicate these findings in a larger healthy control (HC) sample (n = 307) and to examine the same relationship in patients with SCZspect (n = 30) or BD (n = 45). We also compared the mean P100 amplitude, V1 surface area and V1 thickness between controls and patients and found no significant group differences. In HC only, we found a significant positive P100-V1 surface area association, while there were no significant P100-V1 thickness relationships in HC, SCZspect or BD. Together, our results confirm previous findings of a positive P100-V1 surface area association in HC, whereas larger patient samples are needed to further clarify the function-structure relationship in V1 in SCZspect and BD.

• Valstad, Mathias; Roelfs, Daniel; Slapø, Nora Berz; Timpe, Clara Marie Fides; Rai, Ahsan & Matziorinis, Anna Maria [Vis alle 24 forfattere av denne artikkelen] (2021). Evidence for Reduced Long-Term Potentiation-Like Visual Cortical Plasticity in Schizophrenia and Bipolar Disorder. Schizophrenia Bulletin. ISSN 0586-7614. 47(6), s. 1751–1760. doi: 10.1093/schbul/sbab049. Fulltekst i vitenarkiv
• Valstad, Mathias; Moberget, Torgeir; Roelfs, Daniël Thomas Heimen; Slapø, Nora Berz; Timpe, Clara Marie Fides & Beck, Dani [Vis alle 18 forfattere av denne artikkelen] (2020). Experience-dependent modulation of the visual evoked potential: Testing effect sizes, retention over time, and associations with age in 415 healthy individuals. NeuroImage. ISSN 1053-8119. doi: 10.1016/j.neuroimage.2020.117302. Fulltekst i vitenarkiv
• Benjamin, Silje Beatrice Rognås; Valstad, Mathias; Elvsåshagen, Torbjørn; Jönsson, Erik Gunnar; Moberget, Torgeir & Winterton, Adriano [Vis alle 14 forfattere av denne artikkelen] (2020). Heart rate variability is associated with disease severity in psychosis spectrum disorders. Progress in Neuro-psychopharmacology and Biological Psychiatry. ISSN 0278-5846. 00:110108, s. 1–8. doi: 10.1016/j.pnpbp.2020.110108. Fulltekst i vitenarkiv
• Valstad, Mathias; Alvares, Gail A.; Egknud, Maiken; Matziorinis, Anna Maria; Andreassen, Ole Andreas & Westlye, Lars Tjelta [Vis alle 7 forfattere av denne artikkelen] (2017). The correlation between central and peripheral oxytocin concentrations: A systematic review and meta-analysis. Neuroscience and Biobehavioral Reviews. ISSN 0149-7634. 78, s. 117–124. doi: 10.1016/j.neubiorev.2017.04.017. Fulltekst i vitenarkiv
• Quintana, Daniel; Westlye, Lars Tjelta; Hope, Sigrun; Nærland, Terje; Elvsåshagen, Torbjørn & Dørum, Erlend Solberg [Vis alle 16 forfattere av denne artikkelen] (2017). Dose-dependent social-cognitive effects of intranasal oxytocin delivered with novel Breath Powered device in adults with autism spectrum disorder: a randomized placebo-controlled double-blind crossover trial. Translational Psychiatry. ISSN 2158-3188. e1136(7), s. 1–9. doi: 10.1038/tp.2017.103. Fulltekst i vitenarkiv
• Valstad, Mathias; Alvares, Gail A.; Andreassen, Ole Andreas; Westlye, Lars Tjelta & Quintana, Daniel (2016). The relationship between central and peripheral oxytocin concentrations: a systematic review and meta-analysis protocol. Systematic Reviews. ISSN 2046-4053. 5(49). doi: 10.1186/s13643-016-0225-5. Fulltekst i vitenarkiv

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• Ayorech, Ziada; Torvik, Fartein Ask; Cheesman, Rosa Catherine Gillespie; Eilertsen, Espen Moen; Valstad, Mathias & Bjørndal, Ludvig Daae [Vis alle 9 forfattere av denne artikkelen] (2023). Leveraging family data can reveal the role of selection bias in genomic research.

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