• The Bergen 4-day treatment for panic disorder: adapting to COVID-19 restrictions with a hybrid approach of face-to-face and videoconference modalities 

      Hjelle, Kay Morten; Eide, Thorstein Olsen; Thorsen, Anders Lillevik; Kvale, Gerd; Hagen, Kristen; Snorrason, Ivar; Björgvinsson, Thröstur; Hansen, Bjarne Kristian Aaslie (Journal article; Peer reviewed, 2023)
      Background The Bergen 4-day treatment (B4DT) is a concentrated exposure-based therapy that has been shown to be effective in the treatment of anxiety disorders. The current study sought to examine the effectiveness of ...
    • Diffusion Tensor Imaging Before and 3 Months After Concentrated Exposure Response Prevention in Obsessive-Compulsive Disorder 

      Brecke, Vilde; Thorsen, Anders Lillevik; Ousdal, Olga Therese; Vriend, Chris; Alnæs, Dag; Hagen, Kristen; Hansen, Bjarne; Kvale, Gerd; van den Heuvel, Odile A (Journal article; Peer reviewed, 2021)
      Background: Subtle differences in white matter microstructure have been found in obsessive-compulsive disorder (OCD) compared to controls using diffusion tensor imaging (DTI), but it is unclear if and how this change after ...
    • Disentangling Within- and Between-Person Effects During Response Inhibition in Obsessive-Compulsive Disorder 

      Hagland, Pernille; Thorsen, Anders Lillevik; Ousdal, Olga Therese; Gjestad, Rolf; de Wit, Stella J.; Hansen, Bjarne Kristian Aaslie; Hagen, Kristen; Kvale, Gerd; van den Heuvel, Odile A. (Journal article; Peer reviewed, 2021)
      Background: Obsessive-compulsive disorder (OCD) has been related to worse performance, abnormal brain activity, and functional connectivity during response inhibition. Whether these findings are indications of stable traits ...
    • Effects of Bergen 4-Day Treatment on Resting-State Graph Features in Obsessive-Compulsive Disorder 

      Thorsen, Anders Lillevik; Vriend, Chris; de Wit, Stella J.; Ousdal, Olga Therese; Hagen, Kristen; Hansen, Bjarne; Kvale, Gerd; van den Heuvel, Odile A (Journal article; Peer reviewed, 2020)
      Background Exposure and response prevention is an effective treatment for obsessive-compulsive disorder (OCD), but it is unclear how symptom reduction is related to changes in the brain. We aimed to determine the effects ...
    • The Emotional Brain in Obsessive-Compulsive Disorder 

      Thorsen, Anders Lillevik (Doctoral thesis, 2019-11-19)
      Background Obsessive-compulsive disorder (OCD) is characterized by distressing obsessions and time-consuming compulsions. The disorder affects 1-3% and can be highly impairing to daily functioning and detrimental to the ...
    • An fMRI study of cognitive planning before and after symptom provocation in pediatric obsessive–compulsive disorder 

      Jaspers-Fayer, Fern; Yao Lin, Sarah; Best, John R.; Thorsen, Anders Lillevik; Negreiros, Juliana; Chan, Elaine; Ellwyn, Rhonda; Lin, Boyee; de Wit, Stella; van den Heuvel, Odile A; Stewart, S. Evelyn (Journal article; Peer reviewed, 2022)
      Background: Pediatric obsessive–compulsive disorder (OCD) has been associated with poorer planning in laboratory, school and home settings. It is unclear whether this impairment is a standalone cognitive issue or the result ...
    • Longitudinal changes in neurometabolite concentrations in the dorsal anterior cingulate cortex after concentrated exposure therapy for obsessive-compulsive disorder 

      de Joode, Niels T.; Thorsen, Anders Lillevik; Vester, Eline L.; Vriend, Chris; Pouwels, Petra J.W.; Hagen, Kristen; Ousdal, Olga Therese; Hansen, Bjarne Kristian Aaslie; Kvale, Gerd; van den Heuvel, Odile A. (Journal article; Peer reviewed, 2021)
      Background The dorsal anterior cingulate cortex (dACC) plays an important role in the pathophysiology of obsessive-compulsive disorder (OCD) due to its role in error processing, cognitive control and emotion regulation. ...
    • Parental socioeconomic status and child intellectual functioning in a Norwegian sample 

      Eilertsen, Thomas; Thorsen, Anders Lillevik; Holm, Silje Elisabeth Hasmo; Bøe, Tormod; Sørensen, Lin; Lundervold, Astri (Peer reviewed; Journal article, 2016-10)
      Socioeconomic status (SES) in childhood has been linked to cognitive function and future academic and occupational success in studies from several countries. However, previous Nordic studies have shown inconsistent results ...
    • Stable inhibition-related inferior frontal hypoactivation and fronto-limbic hyperconnectivity in obsessive–compulsive disorder after concentrated exposure therapy 

      Thorsen, Anders Lillevik; de Wit, Stella J.; Hagland, Pernille; Ousdal, Olga Therese; Hansen, Bjarne; Hagen, Kristen; Kvale, Gerd; van den Heuvel, Odile A (Journal article; Peer reviewed, 2020)
      Response inhibition has previously been suggested as an endophenotype for obsessive–compulsive disorder (OCD), evidenced by studies showing worse task performance, and altered task-related activation and connectivity. ...
    • The thalamus and its subnuclei—a gateway to obsessive-compulsive disorder 

      Weeland, Cees J.; Kasprzak, Selina; de Joode, Niels T.; Abe, Yoshinari; Alonso, Pino; Ameis, Stephanie H.; Anticevic, Alan; Arnold, Paul D.; Balachander, Srinivas; Banaj, Nerisa; Bargallo, Nuria; Batistuzzo, Marcelo C.; Benedetti, Francesco; Beucke, Jan C.; Bollettini, Irene; Brecke, Vilde; Brem, Silvia; Cappi, Carolina; Cheng, Yuqi; Cho, Kang Ik K.; Costa, Daniel L. C.; Dallaspezia, Sara; Denys, Damiaan; Eng, Goi Khia; Ferreira, Sónia; Feusner, Jamie D.; Fontaine, Martine; Fouche, Jean-Paul; Grazioplene, Rachael G.; Gruner, Patricia; He, Mengxin; Hirano, Yoshiyuki; Hoexter, Marcelo Q.; Huyser, Chaim; Hu, Hao; Jaspers-Fayer, Fern; Kathmann, Norbert; Kaufmann, Christian; Kim, Minah; Koch, Kathrin; Bin Kwak, Yoo; Kwon, Jun Soo; Lazaro, Luisa; Li, Chiang-shan R.; Lochner, Christine; Marsh, Rachel; Martínez-Zalacaín, Ignacio; Mataix-Cols, David; Menchón, Jose M.; Minnuzi, Luciano; Moreira, Pedro Silva; Morgado, Pedro; Nakagawa, Akiko; Nakamae, Takashi; Narayanaswamy, Janardhanan C.; Nurmi, Erika L.; Ortiz, Ana E.; Pariente, Jose C.; Piacentini, John; Picó-Pérez, Maria; Piras, Fabrizio; Piras, Federica; Pittenger, Christopher; Reddy, Y. C. Janardhan; Rodriguez-Manrique, Daniela; Sakai, Yuki; Shimizu, Eiji; Shivakumar, Venkataram; Simpson, Helen Blair; Soreni, Noam; Soriano-Mas, Carles; Sousa, Nuno; Spalletta, Gianfranco; Stern, Emily R.; Stevens, Michael C.; Stewart, S. Evelyn; Szeszko, Philip R.; Takahashi, Jumpei; Tanamatis, Tais; Tang, Jinsong; Thorsen, Anders Lillevik; Tolin, David; van der Werf, Ysbrand D.; van Marle, Hein; van Wingen, Guido A.; Vecchio, Daniela; Venkatasubramanian, G.; Walitza, Susanne; Wang, Jicai; Wang, Zhen; Watanabe, Anri; Wolters, Lidewij H.; Xu, Xiufeng; Yun, Je-Yeon; Zhao, Qing; White, Tonya; Thompson, Paul M.; Stein, Dan J.; van den Heuvel, Odile A; Vriend, Chris (Journal article; Peer reviewed, 2022)
      Larger thalamic volume has been found in children with obsessive-compulsive disorder (OCD) and children with clinical-level symptoms within the general population. Particular thalamic subregions may drive these differences. ...