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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

Siebner, Thomas Hartwig, Stefan Fuglsang, Christopher Fugl Madelung, Annemette Løkkegaard, Flemming Bendtsen, Jens Dahlgaard Hove, Morten Damgaard, Jan Lysgård Madsen, and Hartwig Roman Siebner. “Gastric Emptying Is Not Delayed and Does Not Correlate With Attenuated Postprandial Blood Flow Increase in Medicated Patients With Early Parkinson’s Disease.” Frontiers in Neurology 13 (2022). https://www.frontiersin.org/article/10.3389/fneur.2022.828069.

Madelung, Christopher F., David Meder, Søren A. Fuglsang, Marta M. Marques, Vincent O. Boer, Kristoffer H. Madsen, Esben T. Petersen, Anne-Mette Hejl, Annemette Løkkegaard, and Hartwig R. Siebner. “Locus Coeruleus Shows a Spatial Pattern of Structural Disintegration in Parkinson’s Disease.” Movement Disorders 37, no. 3 (2022): 479–89. https://doi.org/10.1002/mds.28945.

Siebner, Thomas Hartwig, Christopher Fugl Madelung, Flemming Bendtsen, Annemette Løkkegaard, Jens Dahlgaard Hove, and Hartwig Roman Siebner. “Postprandial Increase in Mesenteric Blood Flow Is Attenuated in Parkinson’s Disease: A Dynamic PC-MRI Study.” Journal of Parkinson’s Disease 11, no. 2 (January 1, 2021): 545–57. https://doi.org/10.3233/JPD-202341.

Herz, Damian M., David Meder, Julia A. Camilleri, Simon B. Eickhoff, and Hartwig R. Siebner. “Brain Motor Network Changes in Parkinson’s Disease: Evidence from Meta-Analytic Modeling.” Movement Disorders 36, no. 5 (2021): 1180–90. https://doi.org/10.1002/mds.28468.

Lohse, Allan, David Meder, Silas Nielsen, Anders Elkjær Lund, Damian M Herz, Annemette Løkkegaard, and Hartwig R Siebner. “Low-Frequency Transcranial Stimulation of Pre-Supplementary Motor Area Alleviates Levodopa-Induced Dyskinesia in Parkinson’s Disease: A Randomized Cross-over Trial.” Brain Communications 2, no. 2 (July 1, 2020): fcaa147. https://doi.org/10.1093/braincomms/fcaa147.

Haagensen, Brian N., Damian M. Herz, David Meder, Kristoffer H. Madsen, Annemette Løkkegaard, and Hartwig R. Siebner. “Linking Brain Activity during Sequential Gambling to Impulse Control in Parkinson’s Disease.” NeuroImage: Clinical 27 (January 1, 2020): 102330. https://doi.org/10.1016/j.nicl.2020.102330.

Betts, Matthew J., Evgeniya Kirilina, Maria C. G. Otaduy, Dimo Ivanov, Julio Acosta-Cabronero, Martina F. Callaghan, Christian Lambert, et al. “Locus Coeruleus Imaging as a Biomarker for Noradrenergic Dysfunction in Neurodegenerative Diseases.” Brain 142, no. 9 (September 1, 2019): 2558–71. https://doi.org/10.1093/brain/awz193.

Meder, David, Damian Marc Herz, James Benedict Rowe, Stéphane Lehéricy, and Hartwig Roman Siebner. “The Role of Dopamine in the Brain - Lessons Learned from Parkinson’s Disease.” NeuroImage, Mapping diseased brains, 190 (April 15, 2019): 79–93. https://doi.org/10.1016/j.neuroimage.2018.11.021.

Irmen, Friederike, Andreas Horn, David Meder, Wolf-Julian Neumann, Philip Plettig, Gerd-Helge Schneider, Hartwig Roman Siebner, and Andrea A. Kühn. “Sensorimotor Subthalamic Stimulation Restores Risk-Reward Trade-off in Parkinson’s Disease.” Movement Disorders 34, no. 3 (2019): 366–76. https://doi.org/10.1002/mds.27576.

Meder, David, and Hartwig Roman Siebner. “Spectral Signatures of Neurodegenerative Diseases: How to Decipher Them?” Brain 141, no. 8 (August 1, 2018): 2241–44. https://doi.org/10.1093/brain/awy195.

Lehericy, Stéphane, David E. Vaillancourt, Klaus Seppi, Oury Monchi, Irena Rektorova, Angelo Antonini, Martin J. McKeown, et al. “The Role of High-Field Magnetic Resonance Imaging in Parkinsonian Disorders: Pushing the Boundaries Forward.” Movement Disorders 32, no. 4 (April 1, 2017): 510–25. https://doi.org/10.1002/mds.26968.

Correia, M. M., Rittman, T., Barnes, C. L., Coyle-Gilchrist, I. T., Ghosh, B., Hughes, L. E. & Rowe, J. B.
Towards accurate and unbiased imaging-based differentiation of Parkinson's disease, progressive supranuclear palsy and corticobasal syndrome.
Brain communications. 2, 1, p. 1-18, fcaa051. 2020.

Kaalund, S. S., Passamonti, L., Allinson, K. S. J., Murley, A. G., Robbins, T. W., Spillantini, M. G. & Rowe, J. B.
Locus coeruleus pathology in progressive supranuclear palsy, and its relation to disease severity.
Acta neuropathologica communications. 8, 1, p. 1-11, 11. 2020.

van der Vegt, J. P. M., Hulme, O. J., Madsen, K. H., Buhmann, C., Bloem, B. R., Münchau, A., Helmich, R. C. & Siebner, H. R.
Dopamine agonist treatment increases sensitivity to gamble outcomes in the hippocampus in de novo Parkinson's disease.
NeuroImage. Clinical. 28, p. 1-8, 102362. 2020.

Dogonowski, A. M., Andersen, K. W., Sellebjerg, F., Schreiber, K., Madsen, K. H. & Siebner, H. R.
Functional neuroimaging of recovery from motor conversion disorder: A case report.
NeuroImage. 190, p. 269-274, 2019.

Dubbioso, R., Manganelli, F., Siebner, H. R. & Di Lazzaro, V.
Fast Intracortical Sensory-Motor Integration: A Window Into the Pathophysiology of Parkinson's Disease.
Frontiers in Human Neuroscience. 13, p. 1-14, 111. 2019.

van Eimeren, T., Antonini, A., Berg, D., Bohnen, N., Ceravolo, R., Drzezga, A., Höglinger, G. U., Higuchi, M., Lehericy, S., Lewis, S., Monchi, O., Nestor, P., Ondrus, M., Pavese, N., Peralta, M. C., Piccini, P., Pineda-Pardo, J. Á., Rektorová, I., Rodríguez-Oroz, M., Rominger, A., Seppi, K., Stoessl, A. J., Tessitore, A., Thobois, S., Kaasinen, V., Wenning, G., Siebner, H. R., Strafella, A. P. & Rowe, J. B.
Neuroimaging biomarkers for clinical trials in atypical parkinsonian disorders: Proposal for a Neuroimaging Biomarker Utility System.
Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring. 11, p. 301-309, 2019.

Siebner, Hartwig R., David Meder, and Damian M. Herz. “FMRI in Parkinson’s Disease.” In FMRI: Basics and Clinical Applications, edited by Stephan Ulmer and Olav Jansen, 417–31. Cham: Springer International Publishing, 2020. https://doi.org/10.1007/978-3-030-41874-8_26

Thomsen, B. L. C., Herz, D. M., Siebner, H. R. & Løkkegaard, A.
Dyskinesier ved Parkinsons sygdom: opdatering om nye billeddannende metoder og behandlingsmuligheder.
Ugeskrift for Laeger. 12, 2017, p. 2-6, 2017.

Lehéricy, S., Vaillancourt, D. E., Seppi, K., Monchi, O., Rektorova, I., Antonini, A., McKeown, M. J., Masellis, M., Berg, D., Rowe, J. B., Lewis, S. J. G., Williams-Gray, C. H., Tessitore, A., Siebner, H. R. & International Parkinson and Movement Disorder Society -Neuroimaging Study Group.
The role of high-field magnetic resonance imaging in parkinsonian disorders: Pushing the boundaries forward.
Movement disorders. 32, 4, p. 510-525, 2017.

Løkkegaard A, Herz DM, Haagensen BN, Lorentzen AK, Eickhoff SB, Siebner HR (2016) Altered sensorimotor activation patterns in idiopathic dystonia - an activation likelihood estimation meta-analysis of functional brain imaging studies. Hum Brain Mapp 37:547-557.

Herz DM,  Haagensen BN, Nielsen SH, Madsen KH, Løkkegaard A, Siebner HR (2016) Resting-state connectivity predicts levodopa-induced dyskinesias in Parkinson’s disease. Mov Disord 31:521-529.

Herz DM, Haagensen BN, Christensen MS, Madsen KH, Rowe JB, Løkkegaard A, Siebner HR (2015) Abnormal dopaminergic modulation of striato-cortical networks underlies levodopa-induced dyskinesias in humans. Brain 138:1658-1666.

Herz DM, Haagensen BN,Christensen MS, Madsen KH, Rowe J, Løkkegaard A, Siebner HR (2014) The acute brain response to levodopa heralds dyskinesias in Parkinson’s disease. Ann Neurol 75:829-836.

Herz DM, Eickhoff SB, Løkkegaard A, Siebner HR (2014) Functional neuroimaging of motor control in Parkinson’s disease: A meta-analysis. Hum Brain Mapp 35:3227-3237. 

van der Vegt JPM, Hulme OJ, Zittel S, Madsen KH, Weiss MM, Buhmann C, Bloem BR, Münchau A, Siebner HR (2013) Attenuated neural response to gamble outcomes in drug-naive patients with Parkinson’s disease. Brain 136:1192-1203.

 

 

Group Members

David Meder

Group Leader

Hartwig R. Siebner

Yufei Song

Jiahua Xu

Show all group members (21)

External Collaborators

Assoc. Prof. Annemette Løkkegaard

Copenhagen University Hospital Bispebjerg


Damian M. Herz, MD, PhD

Nuffield Department of Clinical Neurosciences
University of Oxford


Prof. Stéphane Lehericy, MD, PhD

Institut du Cerveau et de la Moelle épinière – ICM, 
Centre de NeuroImagerie de Recherche – CENIR, Sorbonne Universités, Paris


Prof. James Rowe

Behavioural and Clinical Neuroscience Institute
Dept. of Clinical Neurosciences, University of Cambridge


Prof. Angela Cenci Nilsson

Lund University


Prof. Andrea Kühn,

Charité - Universitätsmedizin Berlin
Movement Disorders and Neuromodulation Section


Mads Barløse,

Copenhagen University Hospital Hvidovre


Prof. Poul Jennum

Rigshospitalet, Neurocentre
Department of Clinical Medicine


Prof. Ray Dolan

University College London - Imaging Neuroscience
UCL-Max Planck Centre for Computational Psychiatry and Ageing


Rune Asger Vestergaard Frandsen, MD, PhD

Rigshospitalet, Neurocentre
Department of Clinical Medicine


Salvatore Bertino, MD

University of Messina, Italy