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@ARTICLE{Chen:904379,
      author       = {Chen, Siyi and Weidner, Ralph and Zeng, Hang and Fink,
                      Gereon R. and Müller, Hermann J. and Conci, Markus},
      title        = {{F}eedback from lateral occipital cortex to {V}1 / {V}2
                      triggers object completion: {E}vidence from functional
                      magnetic resonance imaging and dynamic causal modeling},
      journal      = {Human brain mapping},
      volume       = {42},
      number       = {17},
      issn         = {1065-9471},
      address      = {New York, NY},
      publisher    = {Wiley-Liss},
      reportid     = {FZJ-2021-05949},
      pages        = {5581 - 5594},
      year         = {2021},
      abstract     = {Illusory figures demonstrate the visual system's ability to
                      integrate disparate parts into coherent wholes. We probed
                      this object integration process by either presenting an
                      integrated diamond shape or a comparable ungrouped
                      configuration that did not render a complete object. Two
                      tasks were used that either required localization of a
                      target dot (relative to the presented configuration) or
                      discrimination of the dot's luminance. The results showed
                      that only when the configuration was task relevant (in the
                      localization task), performance benefited from the
                      presentation of an integrated object. Concurrent functional
                      magnetic resonance imaging was performed and analyzed using
                      dynamic causal modeling to investigate the (causal)
                      relationship between regions that are associated with
                      illusory figure completion. We found object-specific
                      feedback connections between the lateral occipital cortex
                      (LOC) and early visual cortex (V1/V2). These modulatory
                      connections persisted across task demands and hemispheres.
                      Our results thus provide direct evidence that interactions
                      between mid-level and early visual processing regions engage
                      in illusory figure perception. These data suggest that LOC
                      first integrates inputs from multiple neurons in lower-level
                      cortices, generating a global shape representation while
                      more fine-graded object details are then determined via
                      feedback to early visual areas, independently of the current
                      task demands.},
      cin          = {INM-3},
      ddc          = {610},
      cid          = {I:(DE-Juel1)INM-3-20090406},
      pnm          = {5251 - Multilevel Brain Organization and Variability
                      (POF4-525)},
      pid          = {G:(DE-HGF)POF4-5251},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:34418200},
      UT           = {WOS:000686925900001},
      doi          = {10.1002/hbm.25637},
      url          = {https://juser.fz-juelich.de/record/904379},
}