• Adults with attention deficit hyperactivity disorder report high symptom levels of troubled sleep, restless legs, and cataplexy 

      Bjorvatn, Bjørn; Brevik, Erlend Joramo; Lundervold, Astri; Halmøy, Anne; Posserud, Maj-Britt Rocio; Instanes, Johanne Telnes; Haavik, Jan (Peer reviewed; Journal article, 2017-09-20)
      Objective: To compare the occurrence of a spectrum of different self-reported sleep problems in adults with ADHD and a control group, and to study the impact of current ADHD medication use and clinical ADHD subtype. Method: ...
    • Brain scans from 21,297 individuals reveal the genetic architecture of hippocampal subfield volumes 

      van der Meer, Dennis; Rokicki, Jaroslav; Kaufmann, Tobias; Còrdova Palomera, Aldo; Moberget, Torgeir; Alnæs, Dag; Bettella, Francesco; Frei, Oleksandr; Doan, Nhat Trung; Sønderby, Ida Elken; Smeland, Olav Bjerkehagen; Agartz, Ingrid; Bertolino, Alessandro; Bralten, Janita; Brandt, Christine Lycke; Buitelaar, Jan K.; Djurovic, Srdjan; van Donkelaar, Marjolein; Dørum, Erlend Solberg; Espeseth, Thomas; Faraone, Stephen V.; Fernandéz, Guillén; Fisher, Simon E.; Franke, Barbara; Haatveit, Beathe Christin; Hartman, Catharina A.; Hoekstra, Pieter J.; Håberg, Asta; Jönsson, Erik G.; Kolskår, Knut-Kristian; Le Hellard, Stephanie; Lund, Martina Jonette; Lundervold, Astri; Lundervold, Arvid; Melle, Ingrid; Monereo Sanchez, Jennifer; Norbom, Linn Christin Bonaventure; Nordvik, Jan Egil; Nyberg, Lars; Oosterlaan, Jaap; Papalino, Marco; Papassotiropoulos, Andreas; Pergola, Giulio; de Quervain, Dominique J.F.; Richard, Geneviéve´; Sanders, Anne-Marthe; Selvaggi, Pierluigi; Shumskaya, Elena; Steen, Vidar Martin; Tønnesen, Siren; Ulrichsen, Kristine Moe; Zwiers, Marcel P.; Andreassen, Ole Andreas; Westlye, Lars Tjelta (Peer reviewed; Journal article, 2018-10-02)
      The hippocampus is a heterogeneous structure, comprising histologically distinguishable subfields. These subfields are differentially involved in memory consolidation, spatial navigation and pattern separation, complex ...
    • Common brain disorders are associated with heritable patterns of apparent aging of the brain 

      Kaufmann, Tobias; van der Meer, Dennis; Doan, Nhat Trung; Schwarz, Emanuel; Lund, Martina Jonette; Agartz, Ingrid; Alnæs, Dag; Barch, Deanna M.; Baur-Streubel, Ramona; Bertolino, Alessandro; Bettella, Francesco; Beyer, Mona K.; Bøen, Erlend; Borgwardt, Stefan; Brandt, Christine Lycke; Buitelaar, Jan; Celius, Elisabeth Gulowsen; Cervenka, Simon; Conzelmann, Annette; Còrdova Palomera, Aldo; Dale, Anders; de Quervain, Dominique J.F.; di Carlo, Pasquale; Djurovic, Srdjan; Dørum, Erlend Solberg; Eisenacher, Sarah; Elvsåshagen, Torbjørn; Espeseth, Thomas; Fatouros-Bergman, Helena; Flyckt, Lena; Franke, Barbara; Frei, Oleksandr; Haatveit, Beathe; Håberg, Asta; Harbo, Hanne Flinstad; Hartman, Catharina A; Heslenfeld, Dirk J; Hoekstra, Pieter J; Høgestøl, Einar August; Jernigan, Terry L.; Jonassen, Rune; Jönsson, Erik Gunnar; Kirsch, Peter; Kłoszewska, Iwona; Kolskår, Knut-Kristian; Landrø, Nils Inge; Le Hellard, Stephanie; Lesch, Klaus-Peter; Lovestone, Simon; Lundervold, Arvid; Lundervold, Astri; Maglanoc, Luigi Angelo; Malt, Ulrik Fredrik; Mecocci, Patrizia; Melle, Ingrid; Meyer-Lindenberg, Andreas; Moberget, Torgeir; Norbom, Linn Christin Bonaventure; Nordvik, Jan Egil; Nyberg, Lars; Oosterlaan, Jaap; Papalino, Marco; Papassotiropoulos, Andreas; Pauli, Paul; Pergola, Giulio; Persson, Karin Ester Torun; Richard, Geneviève; Rokicki, Jaroslav; Sanders, Anne-Marthe; Selbæk, Geir; Shadrin, Alexey A.; Smeland, Olav Bjerkehagen; Soininen, Hilkka; Sowa, Piotr; Steen, Vidar Martin; Tsolaki, Magda; Ulrichsen, Kristine Moe; Vellas, Bruno; Wang, Lei; Westman, Eric; Ziegler, Georg C.; Zink, Mathias; Andreassen, Ole Andreas; Westlye, Lars Tjelta (Peer reviewed; Journal article, 2019)
      Common risk factors for psychiatric and other brain disorders are likely to converge on biological pathways influencing the development and maintenance of brain structure and function across life. Using structural MRI data ...
    • Common variants in the ARC gene are not associated with cognitive abilities 

      Myrum, Craig; Giddaluru, Sudheer; Jacobsen, Kaya Kvarme; Espeseth, Thomas; Nyberg, Lars; Lundervold, Astri; Haavik, Jan; Nilsson, Lars-Göran; Reinvang, Ivar; Steen, Vidar Martin; Johansson, Stefan; Wibrand, Karin; Le Hellard, Stephanie; Bramham, Clive R. (Peer reviewed; Journal article, 2015-09-03)
      Introduction: The Activity-Regulated Cytoskeleton-associated (ARC) gene encodes a protein that is critical for the consolidation of synaptic plasticity and long-term memory formation. Given ARC's key role in synaptic ...
    • Event-related-potential (ERP) correlates of performance monitoring in adults with attention-deficit hyperactivity disorder (ADHD) 

      Marquardt, Lynn Anne; Eichele, Heike; Lundervold, Astri; Haavik, Jan; Eichele, Tom (Peer reviewed; Journal article, 2018-04-11)
      Introduction: Attention-deficit hyperactivity disorder (ADHD) is one of the most frequent neurodevelopmental disorders in children and tends to persist into adulthood. Evidence from neuropsychological, neuroimaging, and ...
    • Fractional anisotropy shows differential reduction in frontal-subcortical fiber bundles - A longitudinal MRI study of 76 middle-aged and older adults 

      Vik, Alexandra; Hodneland, Erlend; Haász, Judit; Ystad, Martin Andreas; Lundervold, Astri; Lundervold, Arvid (Peer reviewed; Journal article, 2015-05-15)
      Motivated by the frontal- and white matter (WM) retrogenesis hypotheses and the assumptions that fronto-striatal circuits are especially vulnerable in normal aging, the goal of the present study was to identify fiber bundles ...
    • Genetic contributions to variation in general cognitive function: a meta-analysis of genome-wide association studies in the CHARGE consortium (N=53 949) 

      Davies, Gail; Armstrong, N; Bis, JC; Bressler, J; Chouraki, V; Giddaluru, Sudheer; Hofer, E; Ibrahim-Verbaas, CA; Kirin, M; Lahti, J; Van Der Lee, SJ; Le Hellard, Stephanie; Liu, T; Marioni, RE; Oldmeadow, C; Postmus, I; Smith, AV; Smith, JA; Thalamuthu, A; Thomson, R; Vitart, V; Wang, J; Yu, L; Zgaga, L; Zhao, W; Boxall, R; Harris, SE; Hill, WD; Liewald, DC; Luciano, M; Adams, H; Ames, D; Amin, N; Amouyel, P; Assareh, AA; Au, R; Becker, JT; Beiser, A; Berr, C; Bertram, L; Boerwinkle, E; Buckley, BM; Campbell, H; Corley, J; De Jager, PL; Dufouil, C; Eriksson, JG; Espeseth, Thomas; Faul, JD; Ford, I; Scotland, Generation; Gottesman, RF; Griswold, ME; Gudnason, V; Harris, TB; Heiss, G; Hofman, A; Holliday, EG; Huffman, J; Kardia, SLR; Kochan, N; Knopman, DS; Kwok, JB; Lambert, JC; Lee, T; Li, G; Li, SC; Loitfelder, M; Lopez, OL; Lundervold, Astri; Lundqvist, A; Mather, KA; Mirza, SS; Nyberg, L; Oostra, BA; Palotie, A; Papenberg, G; Pattie, A; Petrovic, K; Polasek, O; Psaty, BM; Redmond, P; Reppermund, S; Rotter, JI; Schmidt, H; Schuur, M; Schofield, PW; Scott, RJ; Steen, Vidar Martin; Stott, DJ; Van Swieten, JC; Taylor, KD; Trollor, J; Trompet, S; Uitterlinden, AG; Weinstein, G; Widen, E; Windham, BG; Jukema, JW; Wright, AF; Wright, MJ; Yang, Q; Amieva, H; Attia, JR; Bennett, DA; Brodaty, H; De Craen, AJM; Hayward, C; Ikram, MA; Lindenberger, U; Nilsson, LG; Porteous, DJ; Räikkönen, K; Rudan, I; Sachdev, PS; Schmidt, R; Schofield, PR; Srikanth, V; Starr, JM; Turner, ST; Weir, DR; Wilson, JF; Van Duijn, C; Launer, L; Fitzpatrick, AL; Seshadri, S; Mosley, TH; Deary, IJ; Reinvang, Ivar (Peer reviewed; Journal article, 2015)
      General cognitive function is substantially heritable across the human life course from adolescence to old age. We investigated the genetic contribution to variation in this important, health- and well-being-related trait ...
    • GWAS-based pathway analysis differentiates between fluid and crystallized intelligence 

      Christoforou, Andrea; Espeseth, Thomas; Davis, G.; Fernandes, Carla P.D.; Giddaluru, Sudheer; Mattheisen, Manuel; Tenesa, A.; Harris, Sarah E.; Liewald, David C; Payton, Anthony; Ollier, W; Horan, M.; Pendleton, Neil; Haggarty, Paul; Djurovic, Srdjan; Herms, Stefan; Hoffman, P.; Cichon, Sven; Starr, John M; Lundervold, Astri; Reinvang, Ivar; Steen, Vidar Martin; Deary, Ian J; Le Hellard, Stephanie (Peer reviewed; Journal article, 2014-09)
      Cognitive abilities vary among people. About 40–50% of this variability is due to general intelligence (g), which reflects the positive correlation among individuals' scores on diverse cognitive ability tests. g is positively ...
    • Human cognitive ability is influenced by genetic variation in components of postsynaptic signalling complexes assembled by NMDA receptors and MAGUK proteins 

      Hill, Wayne David; Davies, Gail; Van De Lagemaat, Louie N.; Christoforou, Andrea; Marioni, Riccardo R.; Duarte Fernandes, Carla; Liewald, David Cherry; Croning, Mike D.R.; Payton, Anthony; Craig, Leone C.A.; Whalley, Lawrence J.; Horan, Michael; Ollier, William E.R.; Hansell, Narelle K.; Wright, Margaret J.; Martin, Nicholas G.; Montgomery, Grant W.; Steen, Vidar Martin; Le Hellard, Stephanie; Espeseth, Thomas; Lundervold, Astri; Reinvang, Ivar; Starr, John M.; Pendleton, Neil; Grant, Seth G.N.; Bates, Timothy C.; Deary, Ian John (Peer reviewed; Journal article, 2014)
      Differences in general cognitive ability (intelligence) account for approximately half of the variation in any large battery of cognitive tests and are predictive of important life events including health. Genome-wide ...
    • Patients with delayed sleep-wake phase disorder show poorer executive functions compared to good sleepers 

      Wilhelmsen-Langeland, Ane; Saxvig, Ingvild W.; Johnsen, Emma Hole; Marszalek, Maja Anna; Andersen, Maria Isolde Wiig; Sætre, Vild Katrine; Lundervold, Astri; Vedaa, Øystein; Nordhus, Inger Hilde; Pallesen, Ståle; Bjorvatn, Bjørn (Peer reviewed; Journal article, 2019-02)
      Objective: Delayed Sleep-Wake Phase Disorder (DSWPD) is associated with negative outcomes, including reduced daytime performance and difficulties with treatment adherence. These outcomes are mediated by executive functions ...
    • Prevalence and clinical correlates of insomnia in adults with attention-deficit hyperactivity disorder 

      Brevik, Erlend Joramo; Lundervold, Astri; Halmøy, Anne; Posserud, Maj-Britt Rocio; Instanes, Johanne Telnes; Bjorvatn, Bjørn; Haavik, Jan (Peer reviewed; Journal article, 2017-08)
      Objective: To investigate the prevalence of insomnia in adults with Attention-deficit hyperactivity disorder (ADHD) and its association with clinical subtypes, current ADHD symptoms, and stimulant treatment. Method: We ...
    • Study of 300,486 individuals identifies 148 independent genetic loci influencing general cognitive function 

      Davies, Gail; Lam, Max; Harris, Sarah E.; Trampush, Joey W.; Luciano, Michelle; Hill, W. David; Hagenaars, Saskia P.; Ritchie, Stuart J.; Marioni, Riccardo E.; Fawns-Ritchie, Chloe; Liewald, David C.M.; Okely, Judith A.; Ahola-Olli, Ari V.; Barnes, Catriona L.K.; Bertram, Lars; Bis, Joshua C.; Burdick, Katherine E.; Christoforou, Andrea; Derosse, Pamela; Djurovic, Srdjan; Espeseth, Thomas; Giakoumaki, Stella; Giddaluru, Sudheer; Gustavson, Daniel E.; Hayward, Caroline; Hofer, Edith; Ikram, M. Arfan; Karlsson, Robert; Knowles, Emma; Lahti, Jari; Leber, Markus; Li, Shuo; Mather, Karen A.; Melle, Ingrid; Morris, Derek; Oldmeadow, Christopher; Palviainen, Teemu; Payton, Antony; Pazoki, Raha; Petrovic, Katja; Reynolds, Chandra A.; Sargurupremraj, Muralidharan; Scholz, Markus; Smith, Jennifer A.; Smith, Albert V.; Terzikhan, Natalie; Thalamuthu, Anbupalam; Trompet, Stella; van der Lee, Sven J.; Ware, Erin B.; Windham, B. Gwen; Wright, Margaret J.; Yang, Jingyun; Yu, Jin; Ames, David; Amin, Najaf; Amouyel, Philippe; Andreassen, Ole Andreas; Armstrong, Nicola J.; Assareh, Amelia A; Attia, John R.; Attix, Deborah; Avramopoulos, Dimitrios; Bennett, David A.; Böhmer, Anne C.; Boyle, Patricia A.; Brodaty, Henry; Campbell, Harry; Cannon, Tyrone D.; Cirulli, Elizabeth T.; Congdon, Eliza; Conley, Emily Drabant; Corley, Janie; Cox, Simon R.; Dale, Anders; Dehghan, Abbas; Dick, Danielle; Dickinson, Dwight; Eriksson, Johan G.; Evangelou, Evangelos; Faul, Jessica D.; Ford, Ian; Freimer, Nelson A.; Gao, He; Giegling, Ina; Gillespie, Nathan A.; Gordon, Scott D.; Gottesman, Rebecca F.; Griswold, Michael E.; Gudnason, Vilmundur; Harris, Tamara B.; Hartmann, Annette M.; Hatzimanolis, Alex; Heiss, Gerardo; Holliday, Elizabeth G.; Joshi, Peter K.; Kähönen, Mika; Kardia, Sharon L.R.; Karlsson, Ida; Kleineidam, Luca; Knopman, David S.; Kochan, Nicole A.; Konte, Bettina; Kwok, John B.; Le Hellard, Stephanie; Lee, Teresa; Lehtimäki, Terho; Li, Shu-Chen; Liu, Tian; Koini, Marisa; London, Edythe; Longstreth, Will T.; Lopez, Oscar L.; Loukola, Anu; Luck, Tobias; Lundervold, Astri; Lundquist, Anders; Lyytikäinen, Leo-Pekka; Martin, Nicholas G.; Montgomery, Grant W.; Murray, Alison D.; Need, Anna C.; Noordam, Raymond; Nyberg, Lars; Ollier, William; Papenberg, Göran; Pattie, Alison; Polasek, Ozren; Poldrack, Russell A.; Psaty, Bruce M.; Reppermund, Simone; Riedel-Heller, Steffi G.; Rose, Richard J.; Rotter, Jerome I.; Roussos, Panos; Rovio, Suvi P.; Saba, Yasaman; Sabb, Fred W.; Sachdev, Perminder S.; Satizabal, Claudia L.; Schmid, Matthias; Scott, Rodney J.; Scult, Matthew A.; Simino, Jeannette; Slagboom, P. Eline; Smyrnis, Nikolaos; Soumaré, Aïcha; Stefanis, Nikos C.; Stott, David J.; Straub, Richard E.; Sundet, Kjetil Søren; Taylor, Adele M.; Taylor, Kent D.; Tzoulaki, Ioanna; Tzourio, Christophe; Uitterlinden, André; Vitart, Veronique; Voineskos, Aristotle N.; Kaprio, Jaakko; Wagner, Michael; Wagner, Holger; Weinhold, Leonie; Wen, K. Hoyan; Widén, Elisabeth; Yang, Qiong; Zhao, Wei; Adams, Hieab H.H.; Arking, Dan E.; Bilder, Robert M.; Bitsios, Panos; Boerwinkle, Eric; Chiba-Falek, Ornit; Corvin, Aiden; De Jager, Philip L.; Debette, Stéphanie; Donohoe, Gary; Elliott, Paul; Fitzpatrick, Annette L.; Gill, Michael; Glahn, David C.; Hägg, Sara; Hansell, Narelle K.; Hariri, Ahmad; Ikram, M. Kamran; Jukema, J. Wouter; Vuoksimaa, Eero; Keller, Matthew C.; Kremen, William S.; Launer, Lenore; Lindenberger, Ulman; Palotie, Aarno; Pedersen, Nancy L.; Pendleton, Neil; Porteous, David J.; Räikkönen, Katri; Raitakari, Olli T.; Ramirez, Alfredo; Reinvang, Ivar; Rudan, Igor; Rujescu, Dan; Schmidt, Reinhold; Schmidt, Helena; Schofield, Peter W.; Schofield, Peter R.; Starr, John M.; Steen, Vidar Martin; Trollor, Julian N.; Turner, Steven T.; Van Duijn, Cornelia M.; Villringer, Arno; Weinberger, Daniel R.; Weir, David R.; Wilson, James F.; Malhotra, Anil; McIntosh, Andrew M.; Gale, Catharine R.; Seshadri, Sudha; Mosley, Thomas H.; Bressler, Jan; Lencz, Todd; Deary, Ian J. (Peer reviewed; Journal article, 2018)
      General cognitive function is a prominent and relatively stable human trait that is associated with many important life outcomes. We combine cognitive and genetic data from the CHARGE and COGENT consortia, and UK Biobank ...
    • Study protocol of the Bergen brain-gut-microbiota-axis study: A prospective case-report characterization and dietary intervention study to evaluate the effects of microbiota alterations on cognition and anatomical and functional brain connectivity in patients with irritable bowel syndrome 

      Berentsen, Birgitte; Nagaraja, Bharath Halandur; Teige, Erica Persson; Lied, Gülen Arslan; Lundervold, Astri; Lundervold, Katarina; Steinsvik, Elisabeth Kjelsvik; Hillestad, Eline Margrete Randulff; Valeur, Jørgen; Brønstad, Ingeborg; Gilja, Odd Helge; Osnes, Berge; Hatlebakk, Jan Gunnar; Haász, Judit; Labus, Jennifer; Gupta, Arpana; Mayer, Emeran; Benitez-Páez, Alfonso; Sanz, Yolanda; Lundervold, Arvid; Hausken, Trygve (Journal article; Peer reviewed, 2020-09)
      Introduction: Irritable bowel syndrome (IBS) is a common clinical label for medically unexplained gastrointestinal (GI) symptoms, recently described as a disturbance of the brain-gut-microbiota (BGM) axis. To gain a ...
    • A two-year longitudinal follow-up of cognitive performance assessed by BICAMS in newly diagnosed patients with MS 

      Skorve, Ellen; Lundervold, Astri; Torkildsen, Øivind; Myhr, Kjell-Morten (Journal article; Peer reviewed, 2020)
      Background: Cognitive impairment is common in patients with multiple sclerosis (MS) and may occur at any stage and with any subtype of the disease. Screening and monitoring of cognitive function should therefore be implemented ...