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@ARTICLE{Tscherpel:1050018,
      author       = {Tscherpel, Caroline and Mustin, Maike and Rosjat, Nils and
                      Mais, Lea-Theresa and Ziemann, Ulf and Fink, Gereon R and
                      Daun, Silvia and Grefkes, Christian},
      title        = {{E}voked slow oscillations and dynamic network
                      reorganization after stroke},
      journal      = {Brain communications},
      volume       = {7},
      number       = {6},
      issn         = {2632-1297},
      address      = {[Oxford]},
      publisher    = {Oxford University Press},
      reportid     = {FZJ-2025-05732},
      pages        = {fcaf391},
      year         = {2025},
      note         = {G.R.F., C.G. and C.T. are funded by the Deutsche
                      Forschungsgemeinschaft (DFG, German Research
                      Foundation)—Project-ID 431549029—SFB 1451 (projects B03,
                      B06, C05 and Z03).},
      abstract     = {A focal ischemic lesion is thought to alter neuronal
                      activity beyond the area of structural damage, thereby
                      interfering with the whole network architecture. Here, we
                      used a combination of transcranial magnetic stimulation and
                      electroencephalography in conjunction with dynamic
                      connectivity analyses and graph theory to study alterations
                      and reorganization of cortical connectivity in a cohort of
                      41 patients longitudinally after stroke. We found a link
                      between an increase in low-frequency coupling in the delta
                      band and alterations in neural information processing in the
                      first weeks after stroke and their relevance for motor
                      outcome >3 months later. We demonstrated that stroke
                      enhances slow activity and delta coupling between
                      frontocentral and parietal regions. In addition, we observed
                      a loss of the physiological network architecture with a
                      decrease in small-worldness and modularity in the delta
                      frequency, implying that a focal ischemic lesion interferes
                      with both cortical information integration and functional
                      segregation within the first weeks after stroke. While we
                      found a link between bifrontal coupling in the alpha
                      spectrum and the degree of the motor deficit in the early
                      post-acute phase, the amount of small-worldness disruption
                      early after stroke indicated the motor outcome in the
                      follow-up session. In contrast, recovery of motor function
                      and cortical reorganization after >3 months post-stroke were
                      paralleled by the normalization of increased low-frequency
                      coupling and a reinstatement of the complex network
                      structure featuring a modular and small-world
                      topology.Keywords: diaschisis; modularity; neuroplasticity;
                      randomness; small-worldness.},
      cin          = {INM-3},
      ddc          = {610},
      cid          = {I:(DE-Juel1)INM-3-20090406},
      pnm          = {5252 - Brain Dysfunction and Plasticity (POF4-525) / DFG
                      project G:(GEPRIS)431549029 - SFB 1451:
                      Schlüsselmechanismen normaler und krankheitsbedingt
                      gestörter motorischer Kontrolle (431549029)},
      pid          = {G:(DE-HGF)POF4-5252 / G:(GEPRIS)431549029},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1093/braincomms/fcaf391},
      url          = {https://juser.fz-juelich.de/record/1050018},
}