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@ARTICLE{Kiefer:906586,
      author       = {Kiefer, Christian M. and Ito, Junji and Weidner, Ralph and
                      Boers, Frank and Shah, N. Jon and Grün, Sonja and Dammers,
                      Jürgen},
      title        = {{R}evealing {W}hole-{B}rain {C}ausality {N}etworks {D}uring
                      {G}uided {V}isual {S}earching},
      journal      = {Frontiers in neuroscience},
      volume       = {16},
      issn         = {1662-453X},
      address      = {Lausanne},
      publisher    = {Frontiers Research Foundation},
      reportid     = {FZJ-2022-01537},
      pages        = {826083},
      year         = {2022},
      abstract     = {In our daily lives, we use eye movements to actively sample
                      visual information from our environment (“active
                      vision”). However, little is known about how the
                      underlying mechanisms are affected by goal-directed
                      behavior. In a study of 31 participants,
                      magnetoencephalography was combined with eye-tracking
                      technology to investigate how interregional interactions in
                      the brain change when engaged in two distinct forms of
                      active vision: freely viewing natural images or performing a
                      guided visual search. Regions of interest with significant
                      fixation-related evoked activity (FRA) were identified with
                      spatiotemporal cluster permutation testing. Using
                      generalized partial directed coherence, we show that, in
                      response to fixation onset, a bilateral cluster consisting
                      of four regions (posterior insula, transverse temporal gyri,
                      superior temporal gyrus, and supramarginal gyrus) formed a
                      highly connected network during free viewing. A comparable
                      network also emerged in the right hemisphere during the
                      search task, with the right supramarginal gyrus acting as a
                      central node for information exchange. The results suggest
                      that all four regions are vital to visual processing and
                      guiding attention. Furthermore, the right supramarginal
                      gyrus was the only region where activity during fixations on
                      the search target was significantly negatively correlated
                      with search response times. Based on our findings, we
                      hypothesize that, following a fixation, the right
                      supramarginal gyrus supplies the right supplementary eye
                      field (SEF) with new information to update the priority map
                      guiding the eye movements during the search task.},
      cin          = {INM-11 / INM-4 / INM-3 / INM-6 / JARA-BRAIN},
      ddc          = {610},
      cid          = {I:(DE-Juel1)INM-11-20170113 / I:(DE-Juel1)INM-4-20090406 /
                      I:(DE-Juel1)INM-3-20090406 / I:(DE-Juel1)INM-6-20090406 /
                      I:(DE-Juel1)VDB1046},
      pnm          = {5253 - Neuroimaging (POF4-525) / 5231 - Neuroscientific
                      Foundations (POF4-523)},
      pid          = {G:(DE-HGF)POF4-5253 / G:(DE-HGF)POF4-5231},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {35250461},
      UT           = {WOS:000768045900001},
      doi          = {10.3389/fnins.2022.826083},
      url          = {https://juser.fz-juelich.de/record/906586},
}