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@ARTICLE{Plewan:21916,
      author       = {Plewan, T. and Weidner, R. and Eickhoff, S.B. and Fink,
                      G.R.},
      title        = {{V}entral and {D}orsal {S}tream {I}nteractions during the
                      {P}erception of the {M}üller-{L}yer {I}llusion: {E}vidence
                      {D}erived from f{MRI} and {D}ynamic {C}ausal {M}odeling},
      journal      = {Journal of cognitive neuroscience},
      volume       = {24},
      issn         = {0898-929X},
      address      = {Cambridge, Mass.},
      publisher    = {MIT Pr. Journals},
      reportid     = {PreJuSER-21916},
      pages        = {2015 - 2029},
      year         = {2012},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {The human visual system converts identically sized retinal
                      stimuli into different-sized perceptions. For instance, the
                      Müller-Lyer illusion alters the perceived length of a line
                      via arrows attached to its end. The strength of this
                      illusion can be expressed as the difference between physical
                      and perceived line length. Accordingly, illusion strength
                      reflects how strong a representation is transformed along
                      its way from a retinal image up to a conscious percept. In
                      this study, we investigated changes of effective
                      connectivity between brain areas supporting these
                      transformation processes to further elucidate the neural
                      underpinnings of optical illusions. The strength of the
                      Müller-Lyer illusion was parametrically modulated while
                      participants performed either a spatial or a luminance task.
                      Lateral occipital cortex and right superior parietal cortex
                      were found to be associated with illusion strength. Dynamic
                      causal modeling was employed to investigate putative
                      interactions between ventral and dorsal visual streams.
                      Bayesian model selection indicated that a model that
                      involved bidirectional connections between dorsal and
                      ventral stream areas most accurately accounted for the
                      underlying network dynamics. Connections within this network
                      were partially modulated by illusion strength. The data
                      further suggest that the two areas subserve differential
                      roles: Whereas lateral occipital cortex seems to be directly
                      related to size transformation processes, activation in
                      right superior parietal cortex may reflect subsequent levels
                      of processing, including task-related supervisory functions.
                      Furthermore, the data demonstrate that the observer's
                      top-down settings modulate the interactions between lateral
                      occipital and superior parietal regions and thereby
                      influence the effect of illusion strength.},
      cin          = {INM-1 / INM-3},
      ddc          = {400},
      cid          = {I:(DE-Juel1)INM-1-20090406 / I:(DE-Juel1)INM-3-20090406},
      pnm          = {Funktion und Dysfunktion des Nervensystems (FUEK409) /
                      89572 - (Dys-)function and Plasticity (POF2-89572)},
      pid          = {G:(DE-Juel1)FUEK409 / G:(DE-HGF)POF2-89572},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:22721374},
      UT           = {WOS:000308422200004},
      doi          = {10.1162/jocn_a_00258},
      url          = {https://juser.fz-juelich.de/record/21916},
}