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@INPROCEEDINGS{Riemer:145308,
      author       = {Riemer, Martin and Wolbers, Thomas},
      title        = {{F}irst person perspective: {A} methodological
                      constraintfor path integration studies?},
      journal      = {Cognitive processing},
      volume       = {16},
      issn         = {1612-4782},
      reportid     = {DZNE-2020-00664},
      pages        = {S60},
      year         = {2015},
      abstract     = {* Background: Studies on path integration are constrained
                      by the factthat spatial distances are always perceived from
                      the vantage point ofthe body. A spatial distance cannot be
                      perceived per se, but only from the first person
                      perspective. This constraint potentially affects production
                      tasks, in which participants are asked to cover a
                      previouslylearned standard distance, and discrimination
                      tasks, in which participants have to compare the lengths of
                      two travelled paths. However, responses in reproduction
                      tasks are given while the participant ismoving along the
                      path to be estimated, whereas judgments in dis-crimination
                      tasks are required only after both distances have
                      beencompleted.* Aims: It was tested whether distance
                      reproduction and distance dis-crimination are differentially
                      affected by an egocentric coding ofspace.* Method: Using an
                      immersive virtual environment set-up, subjects performed
                      distance discrimination and reproduction tasks.
                      Interfer-ence with egocentric spatial coding was induced by
                      repetitive TMSover the right posterior parietal cortex
                      (PPC).Results: We report differential effects on the two
                      psychophysicaltasks. In distance discrimination, TMS
                      selectively decreased responsevariability, while the mean
                      accuracy of judgments was unaffected. Indistance
                      reproduction, TMS had a selective effect on judgment
                      accuracy, while response variability was not affected.*
                      Conclusions: Errors in distance reproduction do not coincide
                      with judgment accuracy, but rather with altered judgment
                      precision. These results allude to an inherent difference
                      between discrimination and reproduction tasks, which can be
                      traced back to a differential impactof the first person
                      perspective on spatial distance perception.},
      month         = {Sep},
      date          = {2015-09-07},
      organization  = {VI. International Conference on
                       Spatial Cognition, Rome (Italy), 7 Sep
                       2015 - 11 Sep 2015},
      cin          = {AG Wolbers},
      ddc          = {150},
      cid          = {I:(DE-2719)1310002},
      pnm          = {344 - Clinical and Health Care Research (POF3-344)},
      pid          = {G:(DE-HGF)POF3-344},
      typ          = {PUB:(DE-HGF)1 / PUB:(DE-HGF)16},
      url          = {https://pub.dzne.de/record/145308},
}