Browsing Department of Clinical Medicine by Author "Haavik, Jan"
Now showing items 1-14 of 14
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Adult attention deficit hyperactivity disorder is associated with asthma
Fasmer, Ole Bernt; Halmøy, Anne; Eagan, Tomas Mikal; Ødegaard, Ketil Joachim; Haavik, Jan (Peer reviewed; Journal article, 2011-08-07)Background: Attention deficit hyperactivity disorder (ADHD) is increasingly recognized as a common disorder not only in children, but also in the adult population. Similarly, asthma also has a substantial prevalence among ... -
Adult attention deficit hyperactivity disorder is associated with migraine headaches
Fasmer, Ole Bernt; Halmøy, Anne; Ødegaard, Ketil Joachim; Haavik, Jan (Peer reviewed; Journal article, 2011-03-11)Attention deficit hyperactivity disorder (ADHD) is now recognized as a common disorder both in child and adult psychiatry. Adult patients with a diagnosis of ADHD (n = 572) and community controls (n = 675) responded to ... -
Adults with attention-deficit/hyperactivity disorder. A brain magnetic resonance spectroscopy study
Dramsdahl, Margaretha; Ersland, Lars; Plessen, Kerstin von; Haavik, Jan; Hugdahl, Kenneth; Specht, Karsten (Peer reviewed; Journal article, 2011-11-23)Background: Impaired cognitive control in individuals with attention-deficit/hyperactivity disorder (ADHD) may be related to a prefrontal cortical glutamatergic deficit. We assessed the glutamate level in the left and the ... -
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 ... -
Cyclothymic temperament: Associations with ADHD, other psychopathology, and medical morbidity in the general population
Syrstad, Vigdis Elin Giæver; Ødegaard, Ketil Joachim; Fasmer, Ole Bernt; Halmøy, Anne; Haavik, Jan; Dilsaver, Stephen C.; Gjestad, Rolf (Peer reviewed; Journal article, 2020)Background: Cyclothymic temperament (CT) is an affective disposition often preceding bipolar disorder (BD), and is the most common affective temperament in patients with BD. In depressed patients, CT is a predictor for ... -
DCLK1 Variants Are Associated across Schizophrenia and Attention Deficit/Hyperactivity Disorder
Håvik, Bjarte; Fernandes, Carla P. D.; Christoforou, Andrea; Ersland, Kari Merete; Giddaluru, Sudheer; Cichon, Sven; Steen, Vidar Martin; Hellard, Stéphanie Le; Johansson, Stefan; Bramham, Clive R.; Haavik, Jan (Peer reviewed; Journal article, 2012-04-23)Doublecortin and calmodulin like kinase 1 (DCLK1) is implicated in synaptic plasticity and neurodevelopment. Genetic variants in DCLK1 are associated with cognitive traits, specifically verbal memory and general cognition. ... -
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 triggers a reversible decrease in brain N-acetylaspartate
Erchinger, Vera Jane; Craven, Alexander R.; Ersland, Lars; Oedegaard, Ketil J.; Bartz-Johannessen, Christoffer; Hammar, Åsa Karin; Haavik, Jan; Riemer, Frank; Kessler, Ute; Oltedal, Leif (Journal article; Peer reviewed, 2023)Introduction: Based on previous research on electroconvulsive therapy (ECT) we have proposed a model where disruption, potentiation, and rewiring of brain networks occur in sequence and serve as the underlying therapeutic ... -
Individual Variability in Reaction Time and Prediction of Clinical Response to Methylphenidate in Adult ADHD: A Prospective Open Label Study Using Conners’ Continuous Performance Test II
Fredriksen, Mats; Egeland, Jens; Haavik, Jan; Fasmer, Ole Bernt (Peer reviewed; Journal article, 2019)Objective: The aim of this study was to examine whether reaction time parameters in adult patients with ADHD could predict their response to methylphenidate (MPH). Method: Previously unmedicated patients (N = 123) were ... -
Innovative approaches in investigating inter-beat intervals: Graph theoretical method suggests altered autonomic functioning in adolescents with ADHD
Kvadsheim, Elisabet; Fasmer, Ole Bernt; Fasmer, Erlend Eindride; Hauge, Erik Rønneberg; Thayer, Julian F.; Osnes, Berge; Haavik, Jan; Koenig, Julian; Adolfsdottir, Steinunn; Plessen, Kerstin J.; Sørensen, Lin (Journal article; Peer reviewed, 2022)Cardiac inter-beat intervals (IBIs) are considered to reflect autonomic functioning and self-regulatory abilities and are often investigated by traditional time- and frequency domain analyses. These analyses investigate ... -
Male to female ratios in autism spectrum disorders by age, intellectual disability and attention-deficit/hyperactivity disorder
Posserud, Maj-Britt; Skretting Solberg, Berit; Engeland, Anders; Haavik, Jan; Klungsøyr, Kari (Journal article; Peer reviewed, 2021)Objective To examine the gender distribution in ASD in adults compared with children and the impact of comorbid intellectual disability (ID) and attention-deficit/hyperactivity disorder (ADHD) on the male to female ratio ... -
Neurobiological mechanisms of ECT and TMS treatment in depression: study protocol of a multimodal magnetic resonance investigation
Frid, Leila Marie; Kessler, Ute; Ousdal, Olga Therese; Hammar, Åsa Karin; Haavik, Jan; Riemer, Frank; Hirnstein, Marco; Ersland, Lars; Erchinger, Vera Jane; Ronold, Eivind Haga; Nygaard, Gyrid; Jakobsen, Petter; Craven, Alexander R.; Osnes, Berge; Alisauskiene, Renata; Bartsch, Hauke; Hellard, Stephanie Francoise Claire Le; Stavrum, Anne-Kristin Støbakk; Oedegaard, Ketil J.; Oltedal, Leif (Journal article; Peer reviewed, 2023)Background: Noninvasive neurostimulation treatments are increasingly being used to treat major depression, which is a common cause of disability worldwide. While electroconvulsive therapy (ECT) and transcranial magnetic ... -
Paraneoplastic syndrome-associated neuronal antibodies in adult ADHD
Haukanes, Bjørn Ivar; Hegvik, Tor-Arne; Eichler, Tilo Wolf; Haavik, Jan; Vedeler, Christian A. (Peer reviewed; Journal article, 2015-09-01)A high seroprevalence of Yo antibodies targeting cerebellar Purkinje cells was recently reported in children with attention deficit/hyperactivity disorder (ADHD). We investigated the presence of 8 paraneoplastic neurological ... -
Vagally mediated heart rate variability, stress, and perceived social support: a focus on sex differences
Kvadsheim, Elisabet; Sørensen, Lin; Fasmer, Ole Bernt; Osnes, Berge; Haavik, Jan; Williams, DeWayne P.; Thayer, Julian Francis; Koenig, Julian (Journal article; Peer reviewed, 2022)Higher vagally mediated heart rate variability (vmHRV), reflecting vagal activity as indexed by heart function and lower stress vulnerability, is associated with higher perceived social support. Seeking social support is ...