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@ARTICLE{Wang:836175,
      author       = {Wang, Bin and Viswanathan, Shivakumar and Abdollahi,
                      Rouhollah and Rosjat, Nils and Popovych, Svitlana and Daun,
                      Silvia and Grefkes, Christian and Fink, Gereon R.},
      title        = {{F}requency-specific modulation of connectivity in the
                      ipsilateral sensorimotor cortex by different forms of
                      movement initiation},
      journal      = {NeuroImage},
      volume       = {159},
      issn         = {1053-8119},
      address      = {Orlando, Fla.},
      publisher    = {Academic Press},
      reportid     = {FZJ-2017-05298},
      pages        = {248-260},
      year         = {2017},
      abstract     = {A consistent finding in motor EEG research is a bilateral
                      attenuation of oscillatory activity over sensorimotor
                      regions close to the onset of an upcoming unilateral hand
                      movement. In contrast, little is known about how movement
                      initiation affects oscillatory activity, especially in the
                      hemisphere ipsilateral to the moving hand. We here
                      investigated the neural mechanisms modulating oscillatory
                      activity in the ipsilateral motor cortex prior to movement
                      onset under the control of two different initiating
                      networks, namely, Self-initiated and Visually-cued actions.
                      During motor preparation, a contralateral preponderance of
                      power over sensorimotor cortex (SM) was observed in α and
                      β bands during Visually-cued movements, whereas power
                      changes were more bilateral during Self-initiated movements.
                      Coherence between ipsilateral SM (iSM) and contralateral SM
                      (cSM) in the α-band was significantly increased compared to
                      the respective baseline values, independent of the context
                      of movement initiation. However, this context-independent
                      cSM-iSM coherence modulated the power changes in iSM in a
                      context-dependent manner, that is, a stronger cSM-iSM
                      coherence correlated with a larger decrease in high-β power
                      over iSM in the Self-initiated condition, in contrast to a
                      smaller decrease in α power in the Visually-cued condition.
                      In addition, the context-dependent coherence between SMA and
                      iSM in the α-band and δ-θ-band for the Self-initiated and
                      Visually-cued condition, respectively, exhibited a similar
                      context-dependent modulation for power changes. Our findings
                      suggest that the initiation of regional oscillations over
                      iSM reflects changes in the information flow with the
                      contralateral sensorimotor and premotor areas dependent upon
                      the context of movement initiation. Importantly, the
                      interaction between regional oscillations and network-like
                      oscillatory couplings indicates different frequency-specific
                      inhibitory mechanisms that modulate the activity in the
                      ipsilateral sensorimotor cortex dependent upon how the
                      movement is initiated.},
      cin          = {INM-3},
      ddc          = {610},
      cid          = {I:(DE-Juel1)INM-3-20090406},
      pnm          = {572 - (Dys-)function and Plasticity (POF3-572)},
      pid          = {G:(DE-HGF)POF3-572},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:28756240},
      UT           = {WOS:000414073100022},
      doi          = {10.1016/j.neuroimage.2017.07.054},
      url          = {https://juser.fz-juelich.de/record/836175},
}