Christian Krog Tamnes

• Legate, Nicole; Nguyen, Thuy-vy; Weinstein, Netta; Lund, Maria Louise; Klevjer, Kristoffer & Kunst, Jonas R. [Show all 13 contributors for this article] (2022). A global experiment on motivating social distancing during the COVID-19 pandemic. Proceedings of the National Academy of Sciences of the United States of America. ISSN 0027-8424. doi: 10.1073/pnas.2111091119.
• AuBuchon, Angela M.; Elliott, Emily M.; Morey, Candice C.; Jarrold, Christopher; Cowan, Nelson & Adams, Eryn J. [Show all 37 contributors for this article] (2022). Lexical Access Speed and the Development of Phonological Recoding during Immediate Serial Recall. Journal of Cognition and Development. ISSN 1524-8372. p. 1–20. doi: 10.1080/15248372.2022.2083140.
• Kjelkenes, Rikka; Wolfers, Thomas; Alnæs, Dag; van der Meer, Dennis; Pedersen, Mads Lund & Dahl, Andreas [Show all 12 contributors for this article] (2022). Mapping Normative Trajectories of Cognitive Function and Its Relation to Psychopathology Symptoms and Genetic Risk in Youth. biological psychiatry: global open science. ISSN 2667-1743. doi: 10.1016/j.bpsgos.2022.01.007.
• Bøen, Rune; Quintana, Daniel; Ladouceur, Cecile D. & Tamnes, Christian Krog (2022). Age-related differences in the error-related negativity and error positivity in children and adolescents are moderated by sample and methodological characteristics: A meta-analysis. Psychophysiology. ISSN 0048-5772. doi: 10.1111/psyp.14003.
• Ferschmann, Lia; Bos, Marieke G.N.; Herting, Megan M.; Mills, Kathryn L. & Tamnes, Christian Krog (2022). Contextualizing adolescent structural brain development:Environmental determinants and mental health outcomes. Current Opinion in Psychology. ISSN 2352-250X. 44, p. 170–176. doi: 10.1016/j.copsyc.2021.09.014.
• Frangou, Sophia; Agartz, Ingrid; Alnæs, Dag; Andreassen, Ole; Doan, Nhat Trung & Dørum, Erlend S. [Show all 13 contributors for this article] (2022). Cortical thickness across the lifespan: Data from 17,075 healthy individuals aged 3-90 years. Human Brain Mapping. ISSN 1065-9471. 43(1), p. 431–451. doi: 10.1002/hbm.25364.
• Dima, Danai; Agartz, Ingrid; Alnæs, Dag; Andreassen, Ole; Doan, Nhat Trung & Dørum, Erlend Solberg [Show all 12 contributors for this article] (2022). Subcortical volumes across the lifespan: Data from 18,605 healthy individuals aged 3–90 years. Human Brain Mapping. ISSN 1065-9471. 43(1). doi: 10.1002/hbm.25320.
• Nyvold, Otelie; Nygaard, Egil; Augusti, Else-Marie & Tamnes, Christian Krog (2021). Unity or diversity of executive functioning in children and adolescents with post-traumatic stress symptoms? A systematic review and meta-analysis. Child Neuropsychology: A Journal of Normal and Abnormal Development in Childhood and Adolescence. ISSN 0929-7049. p. 1–20. doi: 10.1080/09297049.2021.1979950. Full text in Research Archive
• Bølstad, Evalill; Havighurst, Sophie S.; Tamnes, Christian K.; Nygaard, Egil; Bjørk, Rune Flaaten & Stavrinou, Maria [Show all 7 contributors for this article] (2021). A Pilot Study of a Parent Emotion Socialization Intervention: Impact on Parent Behavior, Child Self-Regulation, and Adjustment. Frontiers in Psychology. ISSN 1664-1078. 12, p. 1–15. doi: 10.3389/fpsyg.2021.730278. Full text in Research Archive
• Jalbrzikowski, Maria; Hayes, Rebecca A.; Wood, Stephen J.; Dorte, Nordholm; Zhou, Juan H & Fusar-Poli, Paolo [Show all 51 contributors for this article] (2021). Association of Structural Magnetic Resonance Imaging Measures With Psychosis Onset in Individuals at Clinical High Risk for Developing Psychosis: An ENIGMA Working Group Mega-analysis. JAMA psychiatry. ISSN 2168-6238. 78(7), p. 753–766. doi: 10.1001/jamapsychiatry.2021.0638.
• Sønderby, Ida Elken; Ching, Christopher R. K.; Thomopoulos, Sophia I.; van der Meer, Dennis; Sun, Daqiang & Villalon-Reina, Julio E. [Show all 52 contributors for this article] (2021). Effects of copy number variations on brain structure and risk for psychiatric illness: Large-scale studies from the ENIGMA working groups on CNVs. Human Brain Mapping. ISSN 1065-9471. doi: 10.1002/hbm.25354. Full text in Research Archive
• Goddings, Anne-Lise; Roalf, David; Lebel, Catherine & Tamnes, Christian Krog (2021). Development of white matter microstructure and executive functions during childhood and adolescence: a review of diffusion MRI studies. Developmental Cognitive Neuroscience. ISSN 1878-9293. 51:101008, p. 1–12. doi: 10.1016/j.dcn.2021.101008.
• Sønderby, Ida Elken; van der Meer, Dennis; Moreau, Clara; Kaufmann, Tobias; Walters, G. Bragi & Ellegaard, Maria [Show all 76 contributors for this article] (2021). 1q21.1 distal copy number variants are associated with cerebral and cognitive alterations in humans. Translational Psychiatry. ISSN 2158-3188. 11. doi: 10.1038/s41398-021-01213-0. Full text in Research Archive
• Wang, Ke; Kunst, Jonas R.; Tamnes, Christian Krog; Schei, Vidar; Sverdrup, Therese E. & Askelund, Adrian Dahl [Show all 51 contributors for this article] (2021). A multi-country test of brief reappraisal interventions on emotions during the COVID-19 pandemic. Nature Human Behaviour. ISSN 2397-3374. doi: 10.1038/s41562-021-01173-x. Full text in Research Archive
• Jones, Benedict C.; DeBruine, Lisa M.; Flake, Jessica K.; Liuzza, Marco Tullio; Antfolk, Jan & Arinze, Nwadiogo C. [Show all 50 contributors for this article] (2021). To which world regions does the valence–dominance model of social perception apply? Nature Human Behaviour. ISSN 2397-3374. 5(jan), p. 159–169. doi: 10.1038/s41562-020-01007-2. Full text in Research Archive
• Pavlov, Yuri G.; Adamian, Nika; Appelhoff, Stefan; Arvaneh, Mahnaz; Benwell, Christopher S.Y. & Beste, Christian [Show all 59 contributors for this article] (2021). #EEGManyLabs: Investigating the replicability of influential EEG experiments. Cortex. ISSN 0010-9452. 144, p. 213–229. doi: 10.1016/j.cortex.2021.03.013.
• Mills, Kathryn L.; Siegemund, K; Tamnes, Christian Krog; Ferschmann, Lia; Wierenga, Lara M. & Bos, Marieke G.N. [Show all 9 contributors for this article] (2021). Inter-individual variability in structural brain development from late childhood to young adulthood. NeuroImage. ISSN 1053-8119. doi: 10.1016/j.neuroimage.2021.118450. Full text in Research Archive
• Elliott, Emily M.; Morey, Candice C; AuBuchon, Angela; Cowan, Nelson; Jarrold, Chris & Adams, Eryn [Show all 40 contributors for this article] (2021). Multilab Direct Replication of Flavell, Beach, and Chinsky (1966): Spontaneous Verbal Rehearsal in a Memory Task as a Function of Age. Advances in Methods and Practices in Psychological Science (AMPPS). ISSN 2515-2459. 4(2). doi: 10.1177/25152459211018187.
• Backhausen, Lea L.; Herting, Megan M.; Tamnes, Christian Krog & Vetter, Nora C. (2021). Best Practices in Structural Neuroimaging of Neurodevelopmental Disorders. Neuropsychology Review. ISSN 1040-7308. doi: 10.1007/s11065-021-09496-2. Full text in Research Archive
• Norbom, Linn Christin Bonaventure; Ferschmann, Lia; Parker, Nadine; Agartz, Ingrid; Andreassen, Ole Andreas & Paus, Tomas [Show all 8 contributors for this article] (2021). New insights into the dynamic development of the cerebral cortex in childhood and adolescence: Integrating macro- and microstructural MRI findings. Progress in Neurobiology. ISSN 0301-0082. 204, p. 1–19. doi: 10.1016/j.pneurobio.2021.102109. Full text in Research Archive
• Bøen, Rune; Ferschmann, Lia; Vijayakumar, Nandita; Øverbye, Knut; Fjell, Anders Martin & Espeseth, Thomas [Show all 7 contributors for this article] (2021). Development of attention networks from childhood to young adulthood: A study of performance, intraindividual variability and cortical thickness. Cortex. ISSN 0010-9452. 138, p. 138–151. doi: 10.1016/j.cortex.2021.01.018. Full text in Research Archive
• Ferschmann, Lia; Vijayakumar, Nandita; Grydeland, Håkon; Øverbye, Knut; Mills, Kathryn L. & Fjell, Anders Martin [Show all 9 contributors for this article] (2021). Cognitive reappraisal and expressive suppression relate differentially to longitudinal structural brain development across adolescence. Cortex. ISSN 0010-9452. 136, p. 109–123. doi: 10.1016/j.cortex.2020.11.022. Full text in Research Archive
• Øverbye, Knut; Walhovd, Kristine B; Fjell, Anders Martin; Tamnes, Christian Krog & Huster, Rene (2021). Electrophysiological and behavioral indices of cognitive conflict processing across adolescence. Developmental Cognitive Neuroscience. ISSN 1878-9293. 48, p. 1–10. doi: 10.1016/j.dcn.2021.100929. Full text in Research Archive
• Klapwijk, Eduard T.; van den Bos, Wouter; Tamnes, Christian Krog; Raschle, Nora M. & Mills, Kathryn L. (2020). Opportunities for increased reproducibility and replicability of developmental neuroimaging. Developmental Cognitive Neuroscience. ISSN 1878-9293. 47. doi: 10.1016/j.dcn.2020.100902. Full text in Research Archive
• Wierenga, Lara M.; Doucet, Gaëlle E.; Dima, Danai; Agartz, Ingrid; Aghajani, Moji & Akudjedu, Theophilus N. [Show all 50 contributors for this article] (2020). Greater male than female variability in regional brain structure across the lifespan. Human Brain Mapping. ISSN 1065-9471. doi: 10.1002/hbm.25204. Full text in Research Archive
• Ching, Christopher R. K.; Hibar, Derrek P.; Gurholt, Tiril Pedersen; Nunes, Abraham; Thomopoulos, Sophia I. & Abé, Chritsoph [Show all 51 contributors for this article] (2020). What we learn about bipolar disorder from large-scale neuroimaging: Findings and future directions from the ENIGMA Bipolar Disorder Working Group. Human Brain Mapping. ISSN 1065-9471. doi: 10.1002/hbm.25098. Full text in Research Archive
• Haukvik, Unn Kristin H.; Gurholt, Tiril Pedersen; Nerland, Stener; Elvsåshagen, Torbjørn; Akudjedu, Theophilus N. & Alda, Martin [Show all 97 contributors for this article] (2020). In vivo hippocampal subfield volumes in bipolar disorder—A mega‐analysis from The Enhancing Neuro Imaging Genetics through Meta‐Analysis Bipolar Disorder Working Group. Human Brain Mapping. ISSN 1065-9471. p. 1–14. doi: 10.1002/hbm.25249. Full text in Research Archive
• Gardiner, Gwendolyn; Lee, Daniel; Baranski, Erica; Funder, David; Leknes, Siri & Waldal Holen, Vera [Show all 9 contributors for this article] (2020). Happiness around the World: A Combined Etic-Emic Approach across 63 Countries. PLOS ONE. ISSN 1932-6203. 15(12). doi: 10.1371/journal.pone.0242718. Full text in Research Archive
• Bang, Lasse; Tamnes, Christian Krog; Norbom, Linn Christin Bonaventure; Thomassen, Rut Anne; Solberg, Jill & SKOTTE, LAILA HOLGERSEN [Show all 9 contributors for this article] (2020). Associations of age, body mass index and biochemical parameters with brain morphology in patients with anorexia nervosa. European Eating Disorders Review. ISSN 1072-4133. 29(1), p. 74–85. doi: 10.1002/erv.2803. Full text in Research Archive
• Gurholt, Tiril Pedersen; Lonning, Vera Louise Hiorth; Nerland, Stener; Jørgensen, Kjetil Nordbø; Haukvik, Unn Kristin H. & Alloza, Clara [Show all 41 contributors for this article] (2020). Intracranial and subcortical volumes in adolescents with early‐onset psychosis: A multisite mega‐analysis from the ENIGMA consortium. Human Brain Mapping. ISSN 1065-9471. p. 1–12. doi: 10.1002/hbm.25212. Full text in Research Archive
• Øverbye, Knut; Bøen, Rune; Huster, Rene & Tamnes, Christian Krog (2020). Learning from mistakes: How does the brain handle errors? . Frontiers for Young Minds. ISSN 2296-6846. 08.80. doi: 10.3389/frym.2020.00080. Full text in Research Archive
• Tamnes, Christian Krog & Mills, Kathryn L. (2020). Imaging structural brain development in childhood and adolescence. In Michael S., Gazzaniga & Mangun, George R (Ed.), The Cognitive Neurosciences. MIT Press. ISSN 0262043254.
• Baranski, E; Sweeny, K; Gardiner, G; Leknes, Siri; Waldal Holen, Vera & Hansen, Ingelin [Show all 9 contributors for this article] (2020). International Optimism: Correlates and Consequences of Dispositional Optimism across 61 Countries. Journal of Personality. ISSN 0022-3506. doi: 10.1111/jopy.12582.
• Lee, Daniel I.; Gardiner, Gwendolyn; Baranski, Erica; Leknes, Siri; Waldal Holen, Vera & Hansen, Ingelin [Show all 9 contributors for this article] (2020). Situational experiences around the world: A replication and extension in 62 countries. Journal of Personality. ISSN 0022-3506. 88(6), p. 1091–1110. doi: 10.1111/jopy.12558.
• Norbom, Linn Christin Bonaventure; Rokicki, Jaroslav; van der Meer, Dennis; Alnæs, Dag; Doan, Nhat Trung & Moberget, Torgeir [Show all 10 contributors for this article] (2020). Testing relationships between multimodal modes of brain structural variation and age, sex and polygenic scores for neuroticism in children and adolescents. Translational Psychiatry. ISSN 2158-3188. 10(251). doi: 10.1038/s41398-020-00931-1. Full text in Research Archive
• Norbom, Linn Christin Bonaventure; Rokicki, Jaroslav; Alnæs, Dag; Kaufmann, Tobias; Doan, Nhat Trung & Andreassen, Ole Andreas [Show all 8 contributors for this article] (2020). Maturation of cortical microstructure and cognitive development in childhood and adolescence: A T1w/T2w ratio MRI study. Human Brain Mapping. ISSN 1065-9471. 41(16), p. 4676–4690. doi: 10.1002/hbm.25149. Full text in Research Archive
• Hilland, Eva; Landrø, Nils Inge; Kraft, Brage; Tamnes, Christian Krog; Fried, Eiko I. & Maglanoc, Luigi Angelo [Show all 7 contributors for this article] (2020). Exploring the Links between Specific Depression Symptoms and Brain Structure: A Network Study. Psychiatry and Clinical Neurosciences. ISSN 1323-1316. 74, p. 220–221. doi: 10.1111/pcn.12969. Full text in Research Archive Show summary

  Understanding the neural substrates of specific symptoms may provide important information about mechanisms underlying depression vulnerability. A growing body of research under the umbrella term ‘network approach’ has recently received considerable attention[5]; the approach understands and aims to model mental disorders as systems of causally interacting symptoms. So far, network studies have been based on symptoms and environmental factors, ignoring relevant neurobiological factors[6]. Here, we address this knowledge gap by modelling a joint network of depression-related brain structures and individual depression symptoms, using 21 symptoms and five regional brain measures. The sample is a mixed group of individuals that previously have been treated for one or more major depressive episodes (MDE) and never depressed individuals, with the goal to model a continuum of depression severity. Hippocampus was negatively associated with changes in appetite and sadness, and positively associated with loss of interest and irritability. Insula was negatively associated with loss of interest in sex and sadness. Cingulate had a negative association with sadness, and positive associations with crying and worthlessness. Fusiform gyrus had positive associations with crying and irritability.

• Hoekzema, Elseline; Tamnes, Christian Krog; Berns, Puck; Barba-Muller, Erika; Pozzobon, Cristina & Picado, Marisol [Show all 13 contributors for this article] (2019). Becoming a mother entails anatomical changes in the ventral striatum of the human brain that facilitate its responsiveness to offspring cues. Psychoneuroendocrinology. ISSN 0306-4530. 112(104507). doi: 10.1016/j.psyneuen.2019.104507. Full text in Research Archive
• Ferschmann, Lia; Vijayakumar, Nandita; Grydeland, Håkon; Øverbye, Knut; Sederevicius, Donatas & Due-Tønnessen, Paulina [Show all 10 contributors for this article] (2019). Prosocial behavior relates to the rate and timing of cortical thinning from adolescence to young adulthood. Developmental Cognitive Neuroscience. ISSN 1878-9293. 40:100734, p. 1–8. doi: 10.1016/j.dcn.2019.100734. Full text in Research Archive
• van der Meer, Dennis; Sønderby, Ida Elken; Kaufmann, Tobias; Walters, G. Bragi; Abdellaoui, Abdel & Ames, David [Show all 132 contributors for this article] (2019). Association of copy number variation of the 15q11.2 BP1-BP2 region with cortical and subcortical morphology and cognition. JAMA psychiatry. ISSN 2168-6238. doi: 10.1001/jamapsychiatry.2019.3779. Show summary

  IMPORTANCE: Recurrent microdeletions and duplications in the genomic region 15q11.2 between breakpoints 1 (BP1) and 2 (BP2) are associated with neurodevelopmental disorders. These structural variants are present in 0.5% to 1.0% of the population, making 15q11.2 BP1-BP2 the site of the most prevalent known pathogenic copy number variation (CNV). It is unknown to what extent this CNV influences brain structure and affects cognitive abilities. OBJECTIVE: To determine the association of the 15q11.2 BP1-BP2 deletion and duplication CNVs with cortical and subcortical brain morphology and cognitive task performance. DESIGN, SETTING, AND PARTICIPANTS: In this genetic association study, T1-weighted brain magnetic resonance imaging were combined with genetic data from the ENIGMA-CNV consortium and the UK Biobank, with a replication cohort from Iceland. In total, 203 deletion carriers, 45 247 noncarriers, and 306 duplication carriers were included. Data were collected from August 2015 to April 2019, and data were analyzed from September 2018 to September 2019. MAIN OUTCOMES AND MEASURES: The associations of the CNV with global and regional measures of surface area and cortical thickness as well as subcortical volumes were investigated, correcting for age, age2 , sex, scanner, and intracranial volume. Additionally, measures of cognitive ability were analyzed in the full UK Biobank cohort. RESULTS: Of 45 756 included individuals, the mean (SD) age was 55.8 (18.3) years, and 23 754 (51.9%) were female. Compared with noncarriers, deletion carriers had a lower surface area (Cohen d = −0.41; SE, 0.08; P = 4.9 × 10−8), thicker cortex (Cohen d = 0.36; SE, 0.07; P = 1.3 × 10−7), and a smaller nucleus accumbens (Cohen d = −0.27; SE, 0.07; P = 7.3 × 10−5). There was also a significant negative dose response on cortical thickness (β = −0.24; SE, 0.05; P = 6.8 × 10−7). Regional cortical analyses showed a localization of the effects to the frontal, cingulate, and parietal lobes. Further, cognitive ability was lower for deletion carriers compared with noncarriers on 5 of 7 tasks. CONCLUSIONS AND RELEVANCE: These findings, from the largest CNV neuroimaging study to date, provide evidence that 15q11.2 BP1-BP2 structural variation is associated with brain morphology and cognition, with deletion carriers being particularly affected. The pattern of results fits with known molecular functions of genes in the 15q11.2 BP1-BP2 region and suggests involvement of these genes in neuronal plasticity. These neurobiological effects likely contribute to the association of this CNV with neurodevelopmental disorders

• Smith, Steve; Duff, Eugene; Groves, Adrian; Nichols, Thomas E.; Jbabdi, Saad & Westlye, Lars Tjelta [Show all 12 contributors for this article] (2019). Structural variability in the human brain reflects fine-grained functional architecture at the population level. Journal of Neuroscience. ISSN 0270-6474. 39(31), p. 6136–6149. doi: 10.1523/JNEUROSCI.2912-18.2019. Full text in Research Archive
• Øverbye, Knut; Walhovd, Kristine B; Paus, Tomáš; Fjell, Anders Martin; Huster, Rene & Tamnes, Christian Krog (2019). Error processing in the adolescent brain: Age-related differences in electrophysiology, behavioral adaptation, and brain morphology. Developmental Cognitive Neuroscience. ISSN 1878-9293. 38. doi: 10.1016/j.dcn.2019.100665. Full text in Research Archive
• Grydeland, Håkon; Vértes, Petra; Váša, František; Romero-Garcia, Rafael; Whitaker, Kirstie & Aaron F., Alexander-Bloch [Show all 15 contributors for this article] (2019). Waves of Maturation and Senescence in Microstructural MRI Markers of Human Cortical Myelination over the Lifespan. Cerebral Cortex. ISSN 1047-3211. 29(3), p. 1369–1381. doi: 10.1093/cercor/bhy330. Full text in Research Archive
• Fjell, Anders Martin; Chen, Chi-Hua Chen; Sederevicius, Donatas; Sneve, Markus Handal; Grydeland, Håkon & Krogsrud, Stine Kleppe [Show all 17 contributors for this article] (2019). Continuity and discontinuity in human cortical development and change from embryonic stages to old age. Cerebral Cortex. ISSN 1047-3211. 29(9), p. 3879–3890. doi: 10.1093/cercor/bhy266. Full text in Research Archive
• Tamnes, Christian Krog & Østby, Ylva (2018). Morphometry and development: Changes in brain structure from birth to adult age. In Spalletta, Gianfranco; Piras, Fabrizio & Gili, Tommaso (Ed.), Brain Morphometry. Springer. ISSN 978-1-4939-7647-8. p. 143–164. doi: 10.31234/osf.io/jcfz7. Full text in Research Archive
• Moshontz, Hannah; Campbell, Lorne; Ebersole, Charles R.; IJzerman, Hans; Urry, Heather L. & Forscher, Patrick S. [Show all 97 contributors for this article] (2018). The Psychological Science Accelerator: Advancing Psychology Through a Distributed Collaborative Network. Advances in Methods and Practices in Psychological Science (AMPPS). ISSN 2515-2459. 1(4), p. 501–515. doi: 10.1177/2515245918797607. Full text in Research Archive
• Norbom, Linn Christin Bonaventure; Doan, Nhat Trung; Alnæs, Dag; Kaufmann, Tobias; Moberget, Torgeir & Rokicki, Jaroslav [Show all 9 contributors for this article] (2018). Probing brain developmental patterns of myelination and associations with psychopathology in youths using gray/white matter contrast. Biological Psychiatry. ISSN 0006-3223. doi: 10.1016/j.biopsych.2018.09.027. Full text in Research Archive
• Herting, Megan M.; Johnson, Cory; Mills, Kathryn L.; Vijayakumar, Nandita; Dennison, Meg & Liu, Chang [Show all 12 contributors for this article] (2018). Development of subcortical volumes across adolescence in males and females: A multisample study of longitudinal changes. NeuroImage. ISSN 1053-8119. 172, p. 194–205. doi: 10.1016/j.neuroimage.2018.01.020.
• Bos, Marieke G.N.; Peters, Sabine; van de Kamp, Ferdi C.; Crone, Eveline A. & Tamnes, Christian Krog (2018). Emerging depression in adolescence coincides with accelerated frontal cortical thinning. Journal of Child Psychology and Psychiatry. ISSN 0021-9630. 59(9), p. 994–1002. doi: 10.1111/jcpp.12895. Full text in Research Archive
• Tamnes, Christian Krog; Øverbye, Knut; Ferschmann, Lia; Fjell, Anders Martin; Walhovd, Kristine B & Blakemore, Sarah-Jayne [Show all 7 contributors for this article] (2018). Social perspective taking is associated with self-reported prosocial behavior and regional cortical thickness across adolescence. Developmental Psychology. ISSN 0012-1649. 54(9), p. 1745–1757. doi: 10.1037/dev0000541. Full text in Research Archive
• Tamnes, Christian Krog; Roalf, David R.; Goddings, Anne-Lise & Lebel, C (2018). Diffusion MRI of white matter microstructure development in childhood and adolescence: Methods, challenges and progress. Developmental Cognitive Neuroscience. ISSN 1878-9293. 33, p. 161–175. doi: 10.1016/j.dcn.2017.12.002. Full text in Research Archive
• Wierenga, Lara M.; Sexton, Joseph; Laake, Petter; Giedd, Jay N. & Tamnes, Christian Krog (2018). A Key Characteristic of Sex Differences in the Developing Brain: Greater Variability in Brain Structure of Boys than Girls . Cerebral Cortex. ISSN 1047-3211. 28(8), p. 2741–2751. doi: 10.1093/cercor/bhx154. Full text in Research Archive
• Øverbye, Knut; Huster, Rene; Walhovd, Kristine B; Fjell, Anders Martin & Tamnes, Christian Krog (2018). Development of the P300 from childhood to adulthood: a multimodal EEG and MRI study. Brain Structure and Function. ISSN 1863-2653. 223, p. 4337–4349. doi: 10.1007/s00429-018-1755-5.
• Bos, Marieke G.N.; Wierenga, Lara M.; Blankenstein, Neeltje E.; Schreuders, Elisabeth; Tamnes, Christian Krog & Crone, Eveline A. (2018). Longitudinal structural brain development and externalizing behavior in adolescence. Journal of Child Psychology and Psychiatry. ISSN 0021-9630. 59(10), p. 1061–1072. doi: 10.1111/jcpp.12972. Full text in Research Archive
• Haukvik, Unn Kristin H.; Tamnes, Christian Krog; Söderman, Erik & Agartz, Ingrid (2018). Neuroimaging hippocampal subfields in schizophrenia and bipolar disorder: A systematic review and meta-analysis. Journal of Psychiatric Research. ISSN 0022-3956. 104, p. 217–226. doi: 10.1016/j.jpsychires.2018.08.012. Full text in Research Archive
• Krogsrud, Stine Kleppe; Fjell, Anders Martin; Tamnes, Christian Krog; Grydeland, Håkon; Due-Tønnessen, Paulina & Bjørnerud, Atle [Show all 10 contributors for this article] (2018). Development of white matter microstructure in relation to verbal and visuospatial working memory - A longitudinal study. PLOS ONE. ISSN 1932-6203. 13:e0195540(4), p. 1–22. doi: 10.1371/journal.pone.0195540. Full text in Research Archive
• Wierenga, Lara M.; Bos, Marieke G.N.; Schreuders, Elisabeth; vd Kamp, Ferdi; Peper, Jiska S. & Tamnes, Christian Krog [Show all 7 contributors for this article] (2018). Unraveling age, puberty and testosterone effects on subcortical brain development across adolescence. Psychoneuroendocrinology. ISSN 0306-4530. 91, p. 105–114. doi: 10.1016/j.psyneuen.2018.02.034. Full text in Research Archive
• Tamnes, Christian Krog; Bos, Marieke G.N.; van de Kamp, Ferdi C.; Peters, Sabine & Crone, Eveline A. (2018). Longitudinal development of hippocampal subregions from childhood to adulthood. Developmental Cognitive Neuroscience. ISSN 1878-9293. 30, p. 212–222. doi: 10.1016/j.dcn.2018.03.009. Full text in Research Archive
• Ferschmann, Lia; Fjell, Anders Martin; Vollrath, Margarete E.; Grydeland, Håkon; Walhovd, Kristine B & Tamnes, Christian Krog (2018). Personality Traits Are Associated With Cortical Development Across Adolescence: A Longitudinal Structural MRI Study. Child Development. ISSN 0009-3920. 89(3), p. 811–822. doi: 10.1111/cdev.13016. Full text in Research Archive
• Vijayakumar, Nandita; Mills, Kathryn L.; Alexander-Bloch, Aaron; Tamnes, Christian Krog & Whittle, Sarah (2018). Structural brain development: A review of methodological approaches and best practices. Developmental Cognitive Neuroscience. ISSN 1878-9293. 33, p. 129–148. doi: 10.1016/j.dcn.2017.11.008. Full text in Research Archive
• Westerhausen, Rene; Friesen, Charline-Marie; Rohani, Darius; Krogsrud, Stine Kleppe; Tamnes, Christian Krog & Skranes, Jon Sverre [Show all 9 contributors for this article] (2017). The corpus callosum as anatomical marker of intelligence? A critical examination in a large-scale developmental study. Brain Structure and Function. ISSN 1863-2653. 223, p. 285–296. doi: 10.1007/s00429-017-1493-0. Full text in Research Archive
• Tamnes, Christian Krog; Herting, Megan M.; Goddings, Anne-Lise; Meuwese, Rosa; Blakemore, Sarah-Jayne & Dahl, Ronald E. [Show all 11 contributors for this article] (2017). Development of the cerebral cortex across adolescence: A multisample study of inter-related changes in cortical volume, surface area, and thickness. Journal of Neuroscience. ISSN 0270-6474. 37(12), p. 3402–3412. doi: 10.1523/JNEUROSCI.3302-16.2017. Full text in Research Archive
• Fuglset, Tone Seim; Endestad, Tor; Hilland, Eva; Bang, Lasse; Tamnes, Christian Krog & Landrø, Nils Inge [Show all 7 contributors for this article] (2016). Brain volumes and regional cortical thickness in young females with anorexia nervosa. BMC Psychiatry. ISSN 1471-244X. 16. doi: 10.1186/s12888-016-1126-9.
• Walhovd, Kristine B; Krogsrud, Stine Kleppe; Amlien, Inge Kasbohm; Bartsch, Hauke; Bjørnerud, Atle & Due-Tønnessen, Paulina [Show all 22 contributors for this article] (2016). Neurodevelopmental origins of lifespan changes in brain and cognition. Proceedings of the National Academy of Sciences of the United States of America. ISSN 0027-8424. 113(33), p. 9357–9362. doi: 10.1073/pnas.1524259113. Full text in Research Archive
• Mills, Kathryn L.; Goddings, Anne-Lise; Herting, Megan M.; Meuwese, Rosa; Blakemore, Sarah-Jayne & Crone, Eveline A. [Show all 11 contributors for this article] (2016). Structural brain development between childhood and adulthood: Convergence across four longitudinal samples. NeuroImage. ISSN 1053-8119. 141, p. 273–281. doi: 10.1016/j.neuroimage.2016.07.044.
• Tamnes, Christian Krog & Agartz, Ingrid (2016). White Matter Microstructure in Early-Onset Schizophrenia: A Systematic Review of Diffusion Tensor Imaging Studies. Journal of the American Academy of Child and Adolescent Psychiatry. ISSN 0890-8567. 55(4), p. 269–279. doi: 10.1016/j.jaac.2016.01.004.
• Almaas, Astrid; Tamnes, Christian Krog; Nakstad, Britt; Henriksen, Christine; Grydeland, Håkon & Walhovd, Kristine B [Show all 9 contributors for this article] (2016). Diffusion tensor imaging and behavior in premature infants at 8 years of age, a randomized controlled trial with long-chain polyunsaturated fatty acids. Early Human Development. ISSN 0378-3782. 95, p. 41–46. doi: 10.1016/j.earlhumdev.2016.01.021.
• Krogsrud, Stine Kleppe; Fjell, Anders Martin; Tamnes, Christian Krog; Grydeland, Håkon; Ferschmann, Lia & Due-Tønnessen, Paulina [Show all 11 contributors for this article] (2016). Changes in white matter microstructure in the developing brain - A longitudinal diffusion tensor imaging study of children from 4 to 11years of age. NeuroImage. ISSN 1053-8119. 124, p. 473–486. doi: 10.1016/j.neuroimage.2015.09.017.
• Amlien, Inge; Fjell, Anders Martin; Tamnes, Christian Krog; Grydeland, Håkon; Krogsrud, Stine Kleppe & Chaplin, Tristan A. [Show all 8 contributors for this article] (2016). Organizing Principles of Human Cortical Development - Thickness and Area from 4 to 30 Years: Insights from Comparative Primate Neuroanatomy. Cerebral Cortex. ISSN 1047-3211. 26(1), p. 257–267. doi: 10.1093/cercor/bhu214.
• Fjell, Anders Martin; Grydeland, Håkon; Krogsrud, Stine Kleppe; Amlien, Inge Kasbohm; Rohani, Darius Adam & Ferschmann, Lia [Show all 21 contributors for this article] (2015). Development and aging of cortical thickness correspond to genetic organization patterns. Proceedings of the National Academy of Sciences of the United States of America. ISSN 0027-8424. 112(50), p. 15462–15467. doi: 10.1073/pnas.1508831112. Full text in Research Archive Show summary

  There is a growing realization that early life influences have lasting impact on brain function and structure. Recent research has demon- strated that genetic relationships in adults can be used to parcellate the cortex into regions of maximal shared genetic influence, and a major hypothesis is that genetically progr ammed neurodevel opmental events cause a lasting impact on the organization of the cerebral cortex observable decades later. Here we tested how developmental and lifespan changes in cortical thickness fit the underlying genetic organi- zational principles of co rtical thickness in a longitudinal sample of 974 participants between 4.1 and 88.5 y of age with a total of 1,633 scans, including 773 scans from children below 12 y. Genetic clustering of cortical thickness was based on an independent dataset of 406 adult twins. Developmental and adult age- related changes in cortical thick- ness followed closely the genetic organization of the cerebral cortex, with change rates varying as a functi on of genetic similarity between regions. Cortical regions with overlapping genetic architecture showed correlated development al and adult age change trajectories and vice versa for regions with low genetic overlap. Thus, effects of genes on regional variations in cortical thickness in middle age can be traced to regional differences in neurodevelopmental change rates and extrap- olated to further adult aging-related cortical thinning. This finding suggests that genetic factors contribute to cortical changes through life and calls for a lifespan perspective i n research aimed at identifying the genetic and environmental determinants of cortical development and aging.

• Kanellopoulos, Adriani; Andersson, Stein; Zeller, Bernward; Tamnes, Christian Krog; Fjell, Anders Martin & Walhovd, Kristine B [Show all 9 contributors for this article] (2015). Neurocognitive Outcome in Very Long-Term Survivors of Childhood Acute Lymphoblastic Leukemia After Treatment with Chemotherapy Only. Pediatric Blood & Cancer. ISSN 1545-5009. 63(1), p. 133–138. doi: 10.1002/pbc.25690.
• Almaas, Astrid; Tamnes, Christian Krog; Nakstad, Britt; Henriksen, Christine; Walhovd, Kristine B & Fjell, Anders Martin [Show all 9 contributors for this article] (2015). Long-chain polyunsaturated fatty acids and cognition in VLBW infants at 8 years: An RCT. Pediatrics. ISSN 0031-4005. 135(6), p. 972–980. doi: 10.1542/peds.2014-4094.
• Zayats, Tetyana; Athanasiu, Lavinia; Sønderby, Ida Elken; Djurovic, Srdjan; Westlye, Lars Tjelta & Tamnes, Christian Krog [Show all 15 contributors for this article] (2015). Genome-wide analysis of attention deficit hyperactivity disorder in Norway. PLOS ONE. ISSN 1932-6203. 10(4). doi: 10.1371/journal.pone.0122501. Full text in Research Archive
• Tamnes, Christian Krog; Zeller, Bernward; Amlien, Inge; Kanellopoulos, Adriani; Andersson, Stein & Due-Tønnessen, Paulina [Show all 9 contributors for this article] (2015). Cortical surface area and thickness in adult survivors of pediatric acute lymphoblastic leukemia. Pediatric Blood & Cancer. ISSN 1545-5009. 62(6), p. 1027–1034. doi: 10.1002/pbc.25386.
• Fjell, Anders Martin; Amlien, Inge; Sneve, Markus Handal; Grydeland, Håkon; Tamnes, Christian Krog & Chaplin, Tristan [Show all 8 contributors for this article] (2015). The roots of Alzheimer's disease: Are high-expanding cortical areas preferentially targeted? Cerebral Cortex. ISSN 1047-3211. 25(9), p. 2556–2565. doi: 10.1093/cercor/bhu055. Full text in Research Archive
• Walhovd, Kristine B; Tamnes, Christian Krog; Bjørnerud, Atle; Due-Tønnessen, Paulina; Holland, Dominic & Dale, Anders M. [Show all 7 contributors for this article] (2015). Maturation of Cortico-Subcortical Structural Networks - Segregation and Overlap of Medial Temporal and Fronto-Striatal Systems in Development. Cerebral Cortex. ISSN 1047-3211. 25(7), p. 1835–1841. doi: 10.1093/cercor/bht424.
• Fjell, Anders Martin; Westlye, Lars Tjelta; Amlien, Inge; Tamnes, Christian Krog; Grydeland, Håkon & Engvig, Andreas [Show all 11 contributors for this article] (2015). High-expanding cortical regions in human development and evolution are related to higher intellectual abilities. Cerebral Cortex. ISSN 1047-3211. 25, p. 26–34. doi: 10.1093/cercor/bht201. Full text in Research Archive
• Douaud, Gwenaëlle; Groves, Adrian; Tamnes, Christian Krog; Westlye, Lars Tjelta; Duff, Eugene & Engvig, Andreas [Show all 14 contributors for this article] (2014). A common brain network links development, aging, and vulnerability to disease. Proceedings of the National Academy of Sciences of the United States of America. ISSN 0027-8424. 111(49), p. 17648–17653. doi: 10.1073/pnas.1410378111.
• Sexton, Claire E; Walhovd, Kristine B; Storsve, Andreas Berg; Tamnes, Christian Krog; Westlye, Lars Tjelta & Johansen-Berg, Heidi [Show all 7 contributors for this article] (2014). Accelerated changes in white matter microstructure during aging: A longitudinal diffusion tensor imaging study. Journal of Neuroscience. ISSN 0270-6474. 34(46), p. 15425–15436. doi: 10.1523/JNEUROSCI.0203-14.2014.
• Krogsrud, Stine Kleppe; Tamnes, Christian Krog; Fjell, Anders Martin; Amlien, Inge; Grydeland, Håkon & Sulutvedt, Unni [Show all 12 contributors for this article] (2014). Development of hippocampal subfield volumes from 4 to 22 years. Human Brain Mapping. ISSN 1065-9471. 35(11), p. 5646–5657. doi: 10.1002/hbm.22576. Full text in Research Archive
• Storsve, Andreas Berg; Fjell, Anders Martin; Tamnes, Christian Krog; Westlye, Lars Tjelta; Øverbye, Knut & Aasland, Hilde Wiede [Show all 7 contributors for this article] (2014). Differential longitudinal changes in cortical thickness, surface area and volume across the adult lifespan: Regions of accelerating and decelerating change. Journal of Neuroscience. ISSN 0270-6474. 34(25), p. 8488–8498. doi: 10.1523/JNEUROSCI.0391-14.2014. Full text in Research Archive
• Mills, Kathryn L. & Tamnes, Christian Krog (2014). Methods and considerations for longitudinal structural brain imaging analysis across development. Developmental Cognitive Neuroscience. ISSN 1878-9293. 9, p. 172–190. doi: 10.1016/j.dcn.2014.04.004.
• Tamnes, Christian Krog; Walhovd, Kristine B; Engvig, Andreas; Grydeland, Håkon; Krogsrud, Stine Kleppe & Østby, Ylva [Show all 9 contributors for this article] (2014). Regional hippocampal volumes and development predict learning and memory. Developmental Neuroscience. ISSN 0378-5866. 36(3-4), p. 161–174. doi: 10.1159/000362445. Full text in Research Archive
• Walhovd, Kristine B; Tamnes, Christian Krog & Fjell, Anders Martin (2014). Brain structural maturation and the foundations of cognitive behavioral development. Current Opinion in Neurology. ISSN 1350-7540. 27(2), p. 176–184. doi: 10.1097/WCO.0000000000000074. Full text in Research Archive
• Tamnes, Christian Krog; Walhovd, Kristine B; Dale, Anders M.; Østby, Ylva; Grydeland, Håkon & Richardson, George [Show all 13 contributors for this article] (2013). Brain development and aging: Overlapping and unique patterns of change. NeuroImage. ISSN 1053-8119. 68, p. 63–74. doi: 10.1016/j.neuroimage.2012.11.039.
• Thormodsen, Rune; Rimol, Lars Morten; Tamnes, Christian Krog; Juuhl-Langseth, Monica; Holmen, Aina & Emblem, Kyrre Eeg [Show all 8 contributors for this article] (2013). Age-related cortical thickness differences in adolescents with early-onset schizophrenia compared with healthy adolescents. Psychiatry Research : Neuroimaging. ISSN 0925-4927. 214(3), p. 190–196. doi: 10.1016/j.pscychresns.2013.07.003.
• Grydeland, Håkon; Walhovd, Kristine B; Tamnes, Christian Krog; Westlye, Lars Tjelta & Fjell, Anders Martin (2013). Intracortical Myelin Links with Performance Variability across the Human Lifespan: Results from T1-and T2-Weighted MRI Myelin Mapping and Diffusion Tensor Imaging. Journal of Neuroscience. ISSN 0270-6474. 33(47), p. 18618–18630. doi: 10.1523/JNEUROSCI.2811-13.2013. Full text in Research Archive
• Tamnes, Christian Krog; Walhovd, Kristine B; Grydeland, Håkon; Holland, Dominic; Østby, Ylva & Dale, Anders M. [Show all 7 contributors for this article] (2013). Longitudinal Working Memory Development Is Related to Structural Maturation of Frontal and Parietal Cortices. Journal of Cognitive Neuroscience. ISSN 0898-929X. 25(10), p. 1611–1623. doi: 10.1162/jocn_a_00434. Full text in Research Archive

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• Tamnes, Christian Krog (2021). Nevrokognitiv utviklingspsykologi. Gyldendal Akademisk. ISBN 9788205533387. 320 p.

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• Mills, Kathryn L. & Tamnes, Christian Krog (2020). Longitudinal structural and functional brain development in childhood and adolescence. In Kadosh, Kathrin Cohen (Eds.), The Oxford Handbook of Developmental Cognitive Neuroscience. Oxford University Press. ISSN 9780198827474. doi: 10.1093/oxfordhb/9780198827474.013.4.
• Tamnes, Christian Krog (2020). Tiktok aldri nok. [Newspaper]. A-magasinet.
• Tamnes, Christian Krog (2020). Gir hjerneforskning svaret på hvorfor jenter er flinkere på skolen enn gutter? [Internet]. Forskning.no.
• Tamnes, Christian Krog (2016). Hjerneutvikling fra fosterlivet til voksen alder: Tidlige faktorer og erfaringers betydning. In Holme, Hanne; Solstad Olavesen, Ellen; Valla, Lisbeth & Hansen, Marit Bergum (Ed.), Helsestasjonstjenesten: barns psykiske helse og utvikling. Gyldendal Norsk Forlag A/S. ISSN 9788205486294. p. 27–39. Show summary

  De siste tiårenes spedbarnsforskning viser at spedbarnet har langt større kapasitet enn man tidligere antok. Samtidig understreker forskningen betydningen av utviklingsstøtten barnet får de første leveårene.

• Tamnes, Christian Krog (2016). Neuroimaging studies of normal brain development and their relevance for understanding mental illness.
• Tamnes, Christian Krog (2015). Principles of structural brain development across adolescence.
• Tamnes, Christian Krog (2015). Longitudinal development of white matter microstructure and working memory across childhood.
• Tamnes, Christian Krog; Krogsrud, Stine Kleppe; Fjell, Anders Martin & Walhovd, Kristine B (2015). Regional development of hippocampal subfield volumes and its associations with cognition and memory.
• Zeller, Bernward; Tamnes, Christian Krog; Kanellopoulos, Adriani; Amlien, Inge Kasbohm; Andersson, Stein & Due-Tønnessen, Paulina [Show all 10 contributors for this article] (2014). Response to A.A.M. van der Veldt et al. Journal of Clinical Oncology. ISSN 0732-183X. 32(8), p. 852–853. doi: 10.1200/JCO.2013.52.5725.
• Tamnes, Christian Krog (2013). Structural brain maturation and working memory development.
• Storsve, Andreas Berg; Walhovd, Kristine B; Sneve, Markus Handal; Tamnes, Christian Krog; Krogsrud, Stine Kleppe & Fjell, Anders Martin (2013). Hukommelse gjennom livet - Nevrovitenskapelige perspektiver.

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