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@ARTICLE{Vossel:202583,
      author       = {Vossel, Simone and Mathys, C. and Stephan, K. E. and
                      Friston, K. J.},
      title        = {{C}ortical coupling reflects {B}ayesian belief updating in
                      the deployment of spatial attention},
      journal      = {The journal of neuroscience},
      volume       = {35},
      number       = {33},
      issn         = {0270-6474},
      address      = {Washington, DC},
      publisher    = {Soc.},
      reportid     = {FZJ-2015-04782},
      pages        = {11532–11542},
      year         = {2015},
      abstract     = {The deployment of visuospatial attention and the
                      programming of saccades are governed by the inferred
                      likelihood of events. In the present study, we combined
                      computational modeling of psychophysical data with fMRI to
                      characterize the computational and neural mechanisms
                      underlying this flexible attentional control. Sixteen
                      healthy human subjects performed a modified version of
                      Posner's location-cueing paradigm in which the percentage of
                      cue validity varied in time and the targets required
                      saccadic responses. Trialwise estimates of the certainty
                      (precision) of the prediction that the target would appear
                      at the cued location were derived from a hierarchical
                      Bayesian model fitted to individual trialwise saccadic
                      response speeds. Trial-specific model parameters then
                      entered analyses of fMRI data as parametric regressors.
                      Moreover, dynamic causal modeling (DCM) was performed to
                      identify the most likely functional architecture of the
                      attentional reorienting network and its modulation by
                      (Bayes-optimal) precision-dependent attention. While the
                      frontal eye fields (FEFs), intraparietal sulcus, and
                      temporoparietal junction (TPJ) of both hemispheres showed
                      higher activity on invalid relative to valid trials,
                      reorienting responses in right FEF, TPJ, and the putamen
                      were significantly modulated by precision-dependent
                      attention. Our DCM results suggested that the precision of
                      predictability underlies the attentional modulation of the
                      coupling of TPJ with FEF and the putamen. Our results shed
                      new light on the computational architecture and neuronal
                      network dynamics underlying the context-sensitive deployment
                      of visuospatial attention.},
      cin          = {INM-3},
      ddc          = {590},
      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:000362499700006},
      pubmed       = {pmid:26290231},
      doi          = {10.1523/JNEUROSCI.1382-15.2015},
      url          = {https://juser.fz-juelich.de/record/202583},
}