Blar i Bergen Open Research Archive på forfatter "Hammar, Åsa"
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Anterior cingulate gamma-aminobutyric acid concentrations and electroconvulsive therapy
Erchinger, Vera Jane; Miller, Jeremy; Jones, Thomas; Kessler, Ute; Bustillo, Juan R.; Haavik, Jan; Petrillo, Jonathan; Ziomek, Gregory; Hammar, Åsa; Ødegaard, Ketil Joachim; Calhoun, Vince D.; McClintock, Shawn M.; Ersland, Lars; Oltedal, Leif; Abbott, Christopher (Journal article; Peer reviewed, 2020-09-17)Objective The anticonvulsant hypothesis posits that ECT’s mechanism of action is related to enhancement of endogenous anticonvulsant brain mechanisms. Results of prior studies investigating the role of the inhibitory ... -
The effect of pulse width on subjective memory impairment and remission rate 6 months after electroconvulsive therapy
Tornhamre, Elsa; Ekman, Carl Johan; Hammar, Åsa; Landén, Mikael; Lundberg, Johan; Nordanskog, Pia; Nordenskjöld, Axel (Journal article; Peer reviewed, 2020)Objectives: The aim of this study was to compare the 0.5-millisecond pulse width with broader brief width stimulus and ultrabrief pulse width stimulus in respect to rates of subjective memory impairment and remission 6 ... -
Effects of ECT in treatment of depression: Study protocol for a prospective neuroradiological study of acute and longitudinal effects on brain structure and function
Oltedal, Leif; Kessler, Ute; Ersland, Lars; Grüner, Renate; Andreassen, Ole Andreas; Haavik, Jan; Hoff, Per Ivar; Hammar, Åsa; Dale, Anders Martin; Hugdahl, Kenneth; Ødegaard, Ketil Joachim (Peer reviewed; Journal article, 2015-05-01)Background Major depression can be a serious and debilitating condition. For some patients in a treatment resistant depressive episode, electroconvulsive treatment (ECT) is the only treatment that is effective. Although ... -
Electroconvulsive therapy in bipolar depression - effectiveness and prognostic factors
Popiolek, Katarzyna; Bejerot, Susanne; Brus, Ole; Hammar, Åsa; Landén, Mikael; Lundberg, Johan M.; Nordanskog, Pia; Nordenskjöld, Axel (Peer reviewed; Journal article, 2019)Objective: Electroconvulsive therapy (ECT) is used in patients with severe forms of bipolar depression. ECT is effective but not all patients respond. The aim of this study was to determine prognostic factors for response ... -
Electroconvulsive Therapy in Depression: Improvement in Quality of Life Depending on Age and Sex
Güney, Pelin; Ekman, Carl Johan; Hammar, Åsa; Heintz, Emelie; Landén, Mikael; Lundberg, Johan; Nordanskog, Pia; Nordenskjöld, Axel (Journal article; Peer reviewed, 2020)Objectives It is uncertain if there are variations in the improvement of quality in life between sexes and age groups after electroconvulsive therapy (ECT). The aim of this study was to investigate how health-related ... -
Examining the repeatable battery for the assessment of neuropsychological status validity indices in people with schizophrenia spectrum disorders
Raudeberg, Rune; Karr, Justin E.; Iverson, Grant L.; Hammar, Åsa (Journal article; Peer reviewed, 2021)Objective: We examined the frequency of possible invalid test scores on the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) in patients with schizophrenia spectrum disorders, and whether there ... -
Facing recovery: Emotional bias in working memory, rumination, relapse, and recurrence of major depression; an experimental paradigm conducted five years after first episode of major depression
Ronold, Eivind Haga; Joormann, Jutta; Hammar, Åsa (Journal article; Peer reviewed, 2019)Identifying vulnerability factors for relapse of depression is essential in planning preventive interventions. Emotional face processing in major depression (MDD) shows promise as a potential cognitive marker for depression. ... -
First-Episode Patients Report Cognitive Difficulties in Executive Functioning 1 Year After Initial Episode of Major Depressive Disorder
Schmid, Marit Therese; Hammar, Åsa (Journal article; Peer reviewed, 2021-05-31)Objective: Major Depressive Disorder (MDD) is associated with cognitive impairment in general, and Executive Functioning (EF) in particular, even in remitted phase of the disorder, suggesting residual cognitive symptoms. ... -
The importance of clinical normative data for conceptualizing neuropsychological deficits in people with schizophrenia spectrum disorders
Raudeberg, Rune; Iverson, Grant L.; Hammar, Åsa (Peer reviewed; Journal article, 2019)Objective: To create clinical normative data tables for Norwegian patients with schizophrenia spectrum disorders, to examine whether clinical normative data from Norway differs from similar normative data from Canada and ... -
The incidence of dental fracturing in electroconvulsive therapy in Sweden
Göterfelt, Linda; Ekman, Carl Johan; Hammar, Åsa; Landén, Mikael; Lundberg, Johan; Nordanskog, Pia; Nordenskjöld, Axel (Journal article; Peer reviewed, 2020)Objectives: One adverse effect of electroconvulsive therapy (ECT) is dental fracture; thus, a bite guard and muscle relaxants are used to prevent it. Earlier research reported varying rates of dental fracture, but there ... -
Intracranial arachnoid cysts: impairment of higher cognitive functions and postoperative improvement
Gjerde, Priyanthi Borgen; Schmid, Marit Therese; Hammar, Åsa; Wester, Knut (Peer reviewed; Journal article, 2013-08-28)Background Intracranial arachnoid cysts have been shown to yield cognitive impairment over a range of basic mental functions, and these functions normalize after surgical cyst decompression. We wanted to investigate whether ... -
A longitudinal 5-year follow-up study of cognitive function after first episode major depressive disorder: Exploring state, scar and trait effects
Ronold, Eivind Haga; Schmid, Marit Therese; Ødegaard, Ketil Joachim; Hammar, Åsa (Journal article; Peer reviewed, 2020)Major depression (MDD) is associated with cognitive deficits in processing speed and executive function (EF) following first episode (FE). It is unclear whether deficits are state or trait related. Studies following FE MDD ... -
Neurocognitive profiles in treatment-resistant bipolar I and bipolar II disorder depression
Kessler, Ute; Schøyen, Helle Kristine; Andreassen, Ole Andreas; Eide, Geir Egil; Hammar, Åsa; Malt, Ulrik F.; Ødegaard, Ketil Joachim; Morken, Gunnar; Sundet, Kjetil; Vaaler, Arne E. (Peer reviewed; Journal article, 2013-04-04)Background: The literature on the neuropsychological profiles in Bipolar disorder (BD) depression is sparse. The aims of the study were to assess the neurocognitive profiles in treatment-resistant, acutely admitted BD ... -
Neurocognitive profiles in treatment-resistant bipolar I and bipolar II disorder depression
Kessler, Ute; Schøyen, Helle Kristine; Andreassen, Ole Andreas; Eide, Geir Egil; Hammar, Åsa; Malt, Ulrik Fredrik; Ødegaard, Ketil Joachim; Morken, Gunnar; Sundet, Kjetil Søren; Vaaler, Arne Einar (Peer reviewed; Journal article, 2013-04-04)Background The literature on the neuropsychological profiles in Bipolar disorder (BD) depression is sparse. The aims of the study were to assess the neurocognitive profiles in treatment-resistant, acutely admitted BD ... -
Norms matter: U.S. normative data under-estimate cognitive deficits in Norwegians with schizophrenia spectrum disorders
Raudeberg, Rune; Iverson, Grant L.; Hammar, Åsa (Journal article; Peer reviewed, 2019)Objective: To illustrate and quantify how using different normative systems influences the accuracy of identifying cognitive impairment in people with schizophrenia spectrum disorders. Participants and methods: A ... -
An open pilot study of an internet-delivered intervention targeting self-perceived residual cognitive symptoms after major depressive disorder
Myklebost, Sunniva Brurok; Nordgreen, Tine; Hammar, Åsa (Journal article; Peer reviewed, 2021)Residual cognitive symptoms are associated with reduced daily life functioning, quality of life and represent a risk factor for relapse of major depressive disorder (MDD). There are few studies targeting self-perceived ... -
Parental predictors of children’s executivefunctioning from ages 6 to 10
Halse, Marte Kathrine; Steinsbekk, Silje; Hammar, Åsa; Belsky, Jay; Wichstrøm, Lars (Peer reviewed; Journal article, 2019)According to prominent models of child development, parental factors may contribute to individual differences in children’s executive functioning (EF). Here, we examine the relative importance of parents’ socio-economic ... -
Physical exercise augmented cognitive behaviour therapy for older adults with generalised anxiety disorder (PEXACOG): Study protocol for a randomized controlled trial
Stavestrand, Silje Haukenes; Sirevåg, Kristine; Nordhus, Inger Hilde; Sjøbø, Trond; Endal, Trygve; Nordahl, Hans Morten; Specht, Karsten; Hammar, Åsa; Halmøy, Anne; Martinsen, Egil Wilhelm; Andersson, Eva; Hjelmervik, Helene; Mohlman, Jan; Thayer, Julian Francis; Hovland, Anders (Peer reviewed; Journal article, 2019-03-18)Background Generalised anxiety disorder (GAD) is a frequent and severe anxiety disorder among older adults. GAD increases the risk of developing other disorders such as depression and coronary heart disease. Older adults ... -
A pilot study of cognitive remediation in remitted major depressive disorder patients
Hammar, Åsa; Semkovska, Maria; Borgen, Ida Maria Henriksen; Myklebost, Sunniva Brurok; Ronold, Eivind Haga; Sveen, Thea; Ueland, Torill; Porter, Richard; Johnson, Sheri L (Journal article; Peer reviewed, 2020)Major depressive disorder (MDD) is associated with working memory (WM) impairments. These deficits often persist following remission and are associated with rumination, a recognized risk factor for depression relapse. The ...