Browsing Kristiania Open Archive by Author "Hjelmervik, Helene"
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Estradiol driven change in hallucination proneness across the menstrual cycle as studied with a white noise paradigm
Hjelmervik, Helene; Hausmann, Markus; Bless, Josef J.; Harkestad, Nina; Hugdahl, Kenneth Jan; Laloyaux, Julien (Peer reviewed; Journal article, 2023)The estrogen hypothesis for schizophrenia suggests neuroprotective effects of estrogen for the development of the disorder and for symptom severity, including auditory hallucinations. Furthermore, estrogen has shown enhancing ... -
Glutamate- and GABA-Modulated Connectivity in Auditory Hallucinations—A Combined Resting State fMRI and MR Spectroscopy Study
Weber, Sarah; Hjelmervik, Helene; Craig-Craven, Alexander Richard; Johnsen, Erik; Kroken, Rune Andreas; Løberg, Else-Marie; Ersland, Lars; Kompus, Kristiina; Hugdahl, Kenneth (Peer reviewed; Journal article, 2021)Background: Auditory verbal hallucinations (AVH) have been linked to aberrant interhemispheric connectivity between the left and the right superior temporal gyrus (STG), labeled the interhemispheric miscommunication theory. ... -
Negative valence of hallucinatory voices as predictor of cortical glutamatergic metabolite levels in schizophrenia patients
Hjelmervik, Helene; Craig-Craven, Alexander Richard; Johnsen, Erik; Kompus, Kristiina; Bless, Josef Johann; Sinkeviciute, Igne; Kroken, Rune Andreas; Løberg, Else-Marie; Ersland, Lars; Grüner, Eli Renate; Sommer, Iris E.; Hugdahl, Kenneth Jan (Peer reviewed; Journal article, 2021)Objectives Negative emotional valence of auditory verbal hallucinations (AVHs) in schizophrenia can be a source of distress and is considered a strong predictor of illness severity. Previous studies have found glutamate ... -
Physical exercise augmented cognitive behaviour therapy for older adults with generalised anxiety disorder (PEXACOG): a feasibility study for a randomized controlled trial
Sirevåg, Kristine; Stavestrand, Silje Haukenes; Sjøbø, Trond; Endal, Trygve Bruun; Nordahl, Hans Morten; Andersson, E.; Nordhus, Inger Hilde; Rekdal, Åsa Kristine; Specht, Karsten; Hammar, Åsa Karin; Halmøy, Anne; Mohlman, J.; Hjelmervik, Helene; Thayer, Julian Francis; Hovland, Anders (Peer reviewed; Journal article, 2023)Background Generalised anxiety disorder (GAD) is a frequent and severe disorder among older adults. For older adults with GAD the effect of the recommended treatment, cognitive behaviour therapy (CBT), is reduced. Physical ...