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[EXPIRED] Postdoc in Brain-Circuit Conduction Velocity Mapping

Are you curious to understand how fast brain regions communicate with each other and how the speed of communication is degraded by brain diseases and impact brain function? Do you wish to unravel how brain diseases affect the brain's microstructure, in particular how brain diseases alter myelinated axons and their electrophysical functional properties? Are you eager to work in a dynamic multi-disciplinary research environment with a focus on structural brain imaging? If yes, you should send us your application.

The Danish Research Centre for Magnetic Resonance (DRCMR) at Copenhagen University Hospital Hvidovre (Denmark) is seeking a 3-year postdoc in brain circuit conduction velocity mapping. The postdoc position is supported by the European Research Council consolidator grant "CoM-BraiN" – Conduction velocity mapping in the brain network in health and disease - where the aim is to use an MRI scanner to non-invasively map the conduction velocity of neuronal transmissions in the brain network between brain regions.

Your tasks:

  • To establish translational animal models (rodents) of neurodegenerative and demyelination diseases mimicking those in humans
  • To use optogenetic techniques to ablate and stimulate specific neuronal populations in the brain network and investigate how the manipulation impacts brain function.
  • To measure and analyze the functional readout of brain stimulations using electrophysiology.
  • To image the microstructural neuronal changes in the animal models with a focus on MRI to obtain 3D insights into anatomy. Our group integrates MRI with classical EM and immunohistochemistry but also 3D imaging techniques such as x-ray synchrotron imaging, and light-sheet fluorescence microscopy.
  • To be a fully integrated member of a cross-disciplinary research team and expand your knowledge and curiosity contributing to other scientific projects - still centered around your research topic of interest.

Your profile:

You should be a motivated international-minded team player and have:

  • A PhD degree in Neuroscience or corresponding qualifications within circuit or degeneration neuroscience
  • Worked with animals and have established/used animal models.
  • Documented practical skills in animal handling, stereotaxic surgeries, and anesthesia.
  • Worked with tissue preparation for IHC and microscopic imaging used in your scientific publications.
  • Interest in combining different imaging and functional measurements, e.g. histology and MRI to increase the scientific impact of your project. Here you will use the expertise of your group members.
  • Fluency in English writing and scientific communication
  • Independent working and thinking but also integrating with and contributing to the research team.
  • Furthermore, having worked with viral injections and/or single-cell or LFP electrophysiological recordings is an advantage.

About us:

The project will be carried out at the Danish Research Centre for Magnetic Resonance (DRCMR) which is a leading research centre for biomedical MRI in Europe (www.drcmr.dk). Our mission is to triangulate MR physics and basic physiology from preclinical to clinical research. Approximately 75 researchers from a diverse range of disciplines are currently pursuing basic and clinically applied MR research and its validation with a focus on structural, functional, and metabolic MRI of the human brain and its disorders. The DRCMR is embedded in the Department of Radiology and Nuclear Medicine, a large diagnostic imaging department that houses all biomedical imaging modalities at the Copenhagen University Hospital Amager and Hvidovre. The hospital has strong collaborative links with the Technical University of Denmark and is part of the newly established organisational framework, The Technical University Hospital of Greater Copenhagen (TUH).

The DRCMR has a state-of-the-art MR research infrastructure enabling translational research, which includes a pre-clinical 7T Bruker MR scanner, and six whole-body MR scanners (one 7T, four 3T, and one 1.5T scanners). The DRCMR has pre-clinical labs, a neuropsychology laboratory, an EEG laboratory, and two laboratories for non-invasive brain stimulation.

Our preclinical labs perform basic research in functional, microstructure, and plasticity imaging centred around the 7T Bruker BioSpec MRI system. The preclinical labs include a GMO2-classified virus lab fully equipped with stereotaxic surgery equipment, and electrophysiology facilities. Our cross-disciplinary research team is designing and validating new types of diffusion MRI and quantitative MRI imaging technologies for non-invasively disentangling the microstructure of brain networks and their function. Here, it is key to have a true interest in how the microanatomy and saltatory conduction velocity are related in the normal, and how it impacts brain function in the diseased brain. Our vision is translating our research to clinics to improve future non-invasive imaging technologies for better patient diagnosis.

We see diversity as a strength and encourage all persons regardless of gender, age, ethnicity, disabilities, or religion to apply.

 

Selected Publications

Dunås T, Wåhlin A, Nyberg L, Boraxbekk C-J. 2021. Multimodal Image Analysis of Apparent Brain Age Identifies Physical Fitness as Predictor of Brain Maintenance. Cerebral Cortex. 31(7):3393-3407. https://doi.org/10.1093/cercor/bhab019

Hansen AL, Boraxbekk C-J, Petersen ET, Paulson OB, Andersen O, Siebner HR, Marsman A. 2021. Do glia provide the link between low-grade systemic inflammation and normal cognitive ageing? A 1H magnetic resonance spectroscopy study at 7 tesla. Journal of Neurochemistry. 159(1):185-196.

Nyberg L, Magnussen F, Lundquist A, Baaré W, Bartrés-Faz D, Bertram L, Boraxbekk CJ, Brandmaier AM, Drevon CA, Ebmeier K, Ghisletta P, Henson RN, Junqué C, Kievit R, Kleemeyer M, Knights E, Kühn S, Lindenberger U, Penninx BWJH, Pudas S, Sørensen Ø, Vaqué-Alcázar L, Walhovd KB, Fjell AM. 2021. Educational attainment does not influence brain aging. Proceedings of the National Academy of Sciences of the United States of America. 118(18):1-3. https://doi.org/10.1073/pnas.2101644118

Sandberg P, Boraxbekk C-J, Zogaj I, Nyberg L. 2021. Ancient Mnemonic in New Format-Episodic Memory Training With the Method of Loci in a Smart Phone Application. Journals of Gerontology - Series B Psychological Sciences and Social Sciences. 76(4):681-691. https://doi.org/10.1093/geronb/gbaa216

Vidal-Pineiro D, Wang Y, Krogsrud SK, Amlien IK, Baaré WF, Bartres-Faz D, Bertram L, Brandmaier AM, Drevon CA, Düzel S, Ebmeier K, Henson RN, Junqué C, Kievit RA, Kühn S, Leonardsen E, Lindenberger U, Madsen KS, Magnussen F, Mowinckel AM, Nyberg L, Roe JM, Segura B, Smith SM, Sørensen Ø, Suri S, Westerhausen R, Zalesky A, Zsoldos E, Walhovd KB, Fjell A. 2021. Individual variations in 'brain age' relate to early-life factors more than to longitudinal brain change. eLife. 10:1-19. https://doi.org/10.7554/eLife.69995

Lind, A., Boraxbekk, C.J., Petersen, E.T., Paulsson, O., Siebner, H., & Marsman, A. (2020). Regional myo-inositol, creatine and choline levels are higher at older age and scale negatively with visuo-spatial working memory: A cross-sectional proton MR spectroscopy study at 7 tesla on normal cognitive ageing. Journal of Neuroscience, 40(42), 8149-8159.

Nyberg, L., Boraxbekk, C.J., Eriksson Sörman, D., Hansson, P., Herlitz, A., Kauppi, K., Ljungberg, J.K., Lövheim, H., Lundquist, A., Nordin Adolfsson, A., Oudin, A., Pudas, S., Rönnlund, M., Stiernstedt, M., Sundström, A., & Adolfsson, R. (2020). Biological and environmental predictors of heterogeneity in neurocognitive ageing: Evidence from Betula and other longitudinal studies. Ageing Research Reviews.

Gylling AT, Bloch-Ibenfeldt M, Eriksen CS, Ziegler AK, Wimmelmann CL, Baekgaard M, Boraxbekk CJ, Siebner HR, Mortensen EL, & Kjaer M. (2020). Maintenance of muscle strength following a one-year resistance training program in older adults. Experimental Gerontology, 139.

Eskilsson, T., Fjellman-Wiklund, A., Ek Malmer, E., Stigsdotter Neely, A., Malmberg Gavelin, H., Slunga Järvholm, L., Boraxbekk, C-J. & Nordin, M.(2020). Hopeful struggling for health: Experiences of participating in computerized cognitive training and aerobic training for persons with stress-related exhaustion disorder. Scandinavian Journal of Psychology.

Friedman, B. B., Suri, S., Solé-Padullés, C., Düzel, S., Drevon, C. A., Baaré, W. F. C., Bartrés-Faz, D., Fjell, A. M., Johansen-Berg, H., Madsen, K. S., Nyberg, L., Penninx, B. W. J. H., Sexton, C., Walhovd, K. B., Zsoldos, E. & Budin-Ljøsne, I. (2020). Are People Ready for Personalized Brain Health? Perspectives of Research Participants in the Lifebrain Consortium. The Gerontologist.

Hansen, A. L., Boraxbekk, C-J., Petersen, E. T., Paulson, O. B., Siebner, H. R. & Marsman, A. (2020). Regional glia-related metabolite levels are higher at older age and scale negatively with visuo-spatial working memory: A cross-sectional proton MR spectroscopy study at 7 tesla on normal cognitive ageing. Cold Spring Harbor Protocols. 36 p., 864496.

Karalija, N., Jonassson, L., Johansson, J., Papenberg, G., Salami, A., Andersson, M., Riklund, K., Nyberg, L. & Boraxbekk, C-J. (2020). High long-term test-retest reliability for extrastriatal 11C-raclopride binding in healthy older adults.
Journal of cerebral blood flow and metabolism.

Wheeler, M. J., Green, D. J., Ellis, K. A., Cerin, E., Heinonen, I., Naylor, L. H., Larsen, R., Wennberg, P., Boraxbekk, C-J., Lewis, J., Eikelis, N., Lautenschlager, N. T., Kingwell, B. A., Lambert, G., Owen, N. & Dunstan, D. W. (2020).
Distinct effects of acute exercise and breaks in sitting on working memory and executive function in older adults: a three-arm, randomised cross-over trial to evaluate the effects of exercise with and without breaks in sitting on cognition.
British Journal of Sports Medicine.

Bangsbo, J., Blackwell, J., Boraxbekk, C-J., Caserotti, P., Dela, F., Evans, A. B., Jespersen, A. P., Gliemann, L., Kramer, A. F., Lundbye-Jensen, J., Mortensen, E. L., Lassen, A. J., Gow, A. J., Harridge, S. D. R., Hellsten, Y., Kjaer, M., Kujala, U. M., Rhodes, R. E., Pike, E. C. J., Skinner, T., Skovgaard, T., Troelsen, J., Tulle, E., Tully, M. A., van Uffelen, J. G. Z. & Viña, J. (2019). Copenhagen Consensus statement 2019: physical activity and ageing. British Journal of Sports Medicine. 53, 14, p. 856-858.

Bojsen-Møller, E., Boraxbekk, C-J., Ekblom, Ö., Blom, V. & Ekblom, M. M. (2019). Relationships between Physical Activity, Sedentary Behaviour and Cognitive Functions in Office Workers.
International Journal of Environmental Research and Public Health. 16, 23, p. 1-15, 4721.

Düzel, E., Acosta-Cabronero, J., Berron, D., Biessels, G. J., Björkman-Burtscher, I., Bottlaender, M., Bowtell, R., Buchem, M. V., Cardenas-Blanco, A., Boumezbeur, F., Chan, D., Clare, S., Costagli, M., de Rochefort, L., Fillmer, A., Gowland, P., Hansson, O., Hendrikse, J., Kraff, O., Ladd, M. E., Ronen, I., Petersen, E., Rowe, J. B., Siebner, H., Stoecker, T., Straub, S., Tosetti, M., Uludag, K., Vignaud, A., Zwanenburg, J. & Speck, O. (2019). European Ultrahigh-Field Imaging Network for Neurodegenerative Diseases (EUFIND). Alzheimer's & dementia (Amsterdam, Netherlands). 11, p. 538-549.

Hedlund, M., Lindelöf, N., Johansson, B., Boraxbekk, C-J. & Rosendahl, E. (2019). Development and Feasibility of a Regulated, Supramaximal High-Intensity Training Program Adapted for Older Individuals. Frontiers in physiology. 10, p. 1-12, 590.

Holm, S. K., Madsen, K. S., Vestergaard, M., Born, A. P., Paulson, O. B., Siebner, H. R., Uldall, P. & Baaré, W. F. C. (2019). Previous glucocorticoid treatment in childhood and adolescence is associated with long-term differences in subcortical grey matter volume and microstructure. NeuroImage. Clinical. 23, p. 1-11, 101825. 

Jonasson, L. S., Nyberg, L., Axelsson, J., Kramer, A. F., Riklund, K. & Boraxbekk, C-J. (2019). Higher striatal D2-receptor availability in aerobically fit older adults but non-selective intervention effects after aerobic versus resistance training. NeuroImage. 202, p. 1-10, 116044.

Magnusson, P. O., Boer, V. O., Marsman, A., Paulson, O. B., Hanson, L. G. & Petersen, E. T. (2019). Gamma-aminobutyric acid edited echo-planar spectroscopic imaging (EPSI) with MEGA-sLASER at 7T.
Magnetic Resonance in Medicine. 81, 2, p. 773-780.

Månsson, K. N. T., Lindqvist, D., Yang, L. L., Svanborg, C., Isung, J., Nilsonne, G., Bergman-Nordgren, L., El Alaoui, S., Hedman-Lagerlöf, E., Kraepelien, M., Högström, J., Andersson, G., Boraxbekk, C-J., Fischer, H., Lavebratt, C., Wolkowitz, O. M. & Furmark, T. (2019). Improvement in indices of cellular protection after psychological treatment for social anxiety disorder. Translational psychiatry. 9, p. 1-10, 340.

Marsman, A. & Pol, H. H. (2019). Glutamaterge neurotransmissie. Handboek schizofreniespectrumstoornissen. 2nd udg. De Tijdstroom/Boom, Bind 2019. p. 370-385..

Malmberg Gavelin, H., Eskilsson, T., Boraxbekk, C.J., Josefsson, M., Stigsdotter Neely, A., & Slunga Järvholm L. (2018). Rehabilitation for improved cognition in patients with stress-related exhaustion disorder: RECO – a randomized clinical trial. Stress.

Boraxbekk, C.-J. (2018). Non-invasive brain stimulation and neuro-enhancement in aging. Clinical Neurophysiology, 129, 464-65.

Baruël Johansen, L., Madsen, K. S., Andersen, K. W., Madsen, K. H., Siebner, H. R. & Baaré, W. F. C. (2017) Reduced orbitofrontal functional network centrality characterizes high neuroticism across childhood and adolescence.

Stomby, A., Otten, J., Ryberg, M., Nyberg, L., Olsson, T. & Boraxbekk, C-J. (2017). A Paleolithic Diet with and without Combined Aerobic and Resistance Exercise Increases Functional Brain Responses and Hippocampal Volume in Subjects with Type 2 Diabetes. Frontiers in Aging Neuroscience. 9, 391.

Jonasson, L. S., Axelsson, J., Riklund, K. & Boraxbekk, C.-J. (2017). Simulating effects of brain atrophy in longitudinal PET imaging with an anthropomorphic brain phantom.
Physics in Medicine and Biology. 62, 13, p. 5213-5227.

Gavelin, H. M., Neely, A. S., Andersson, M., Eskilsson, T., Järvholm, L. S. & Boraxbekk, C-J. (2017). Neural activation in stress-related exhaustion: Cross-sectional observations and interventional effects.
Psychiatry Research. 269, p. 17-25.

Flodin, P., Jonasson, L. S., Riklund, K., Nyberg, L. & Boraxbekk, C.-J. (2017). Does Aerobic Exercise Influence Intrinsic Brain Activity?: An Aerobic Exercise Intervention among Healthy Old Adults.Frontiers in Aging Neuroscience. 9, p. 267.

Eskilsson, T., Slunga Järvholm, L., Malmberg Gavelin, H., Stigsdotter Neely, A. & Boraxbekk, C-J. (2017). Aerobic training for improved memory in patients with stress-related exhaustion: a randomized controlled trial. BMC Psychiatry. 17, 322, p. 1-10, 322.

Bas-Hoogendam, J. M., van Steenbergen, H., Nienke Pannekoek, J., Fouche, J. P., Lochner, C., Hattingh, C. J., Cremers, H. R., Furmark, T., Månsson, K. N. T., Frick, A., Engman, J., Boraxbekk, C.-J., Carlbring, P., Andersson, G., Fredrikson, M., Straube, T., Peterburs, J., Klumpp, H., Phan, K. L., Roelofs, K., Veltman, D. J., van Tol, M. J., Stein, D. J. & van der Wee, N. J. A. (2017). Voxel-based morphometry multi-center mega-analysis of brain structure in social anxiety disorder. NeuroImage: Clinical. 16, p. 678-688.

Jonasson, L.S., Nyberg, L., Kramer, A.F., Lundquist, A., Riklund, K., & Boraxbekk, C.-J. (2017). Aerobic exercise intervention, cognitive performance, and brain structure: Results from the physical influences on brain in aging (PHIBRA) study. Frontiers in Aging Neuroscience; 8, 336.

Boraxbekk, C.-J., Salami, A., Wåhlin, A., & Nyberg, L. (2016). Physical activity over a decade modifies age-related decline in perfusion, gray matter volume, and functional connectivity of the posterior default mode network - a multimodal approach. NeuroImage; 131, 133-141

Group Members

Naiara Demnitz

Group Leader

Sussi Larsen

External Collaborators

Prof. Erik Lykke Mortensen

Department of Public Health, Copenhagen University

Prof. Michael Kjær

Department of Clinical Medicine, Bispebjerg Hospital, University of Copenhagen

Prof. Gunhild Waldemar

Department of Neurology, Copenhagen University Hospital Rigshospitalet 

Prof. Lars Nyberg

Umeå Center for  Functional Brain Imaging