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@ARTICLE{Vossel:807876,
      author       = {Vossel, Simone and Fink, Gereon Rudolf},
      title        = {{C}ontralesional distractors enhance ipsilesional target
                      processing after righthemispheric stroke},
      journal      = {Cortex},
      volume       = {78},
      issn         = {0010-9452},
      address      = {Paris},
      publisher    = {Elsevier Masson},
      reportid     = {FZJ-2016-02204},
      pages        = {115-124},
      year         = {2016},
      abstract     = {Stroke can result in marked impairments in the processing
                      of information presented in contralesional space. The
                      present prospective study investigated how a contralesional
                      distractor affects ipsilesional perception in patients with
                      a right-hemispheric stroke. In a simple target detection
                      task, the influence of the distractor on reaction times
                      (RTs) was examined in stroke patients and compared to the
                      performance of healthy elderly controls. Distractor
                      interference effects were related to measures of neglect and
                      extinction using a regression analysis. Moreover, the
                      magnitude of the behavioural distractor effect entered a
                      voxel-based lesion-symptom mapping (VLSM) analysis with the
                      hypothesis that parietal and temporoparietal lesions are
                      related to altered distractor processing. While the presence
                      of a distractor in the opposite hemifield slowed down RTs in
                      healthy controls for left and right targets, this effect was
                      only observed for contralesional left targets in the group
                      of right-hemispheric patients. In stark contrast, the
                      presence of a distractor in the contralesional hemifield
                      expedited ipsilesional (i.e., right) target detection. This
                      effect was significantly related to lesions in the anterior
                      middle temporal and temporoparietal cortex, external and
                      internal capsule, as well as the superior longitudinal
                      fascicle (SLF). These results elucidate the nature of the
                      disruption of attentive processing in the contralesional
                      hemifield after right-hemispheric stroke. More specifically,
                      they shed light on the abnormal prioritisation of
                      ipsilesional information: our data suggest that damage to
                      the temporal and temporoparietal cortex and white matter
                      tracts may transform contralesional stimulation into an
                      unspecific saliency signal contributing to facilitated
                      information processing in ipsilesional space.},
      cin          = {INM-3},
      ddc          = {570},
      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},
      UT           = {WOS:000376715000009},
      pubmed       = {pmid:27035700},
      doi          = {10.1016/j.cortex.2016.02.010},
      url          = {https://juser.fz-juelich.de/record/807876},
}