Radboud Repository

      View Item 
      •   Radboud Repository
      • Collections Radboud University
      • Datasets
      • View Item
      •   Radboud Repository
      • Collections Radboud University
      • Datasets
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.
      BrowseAll of RepositoryCollectionsDepartmentsDate IssuedAuthorsTitlesDocument typeThis CollectionDepartmentsDate IssuedAuthorsTitlesDocument type
      StatisticsView Item Statistics

      Opposite Effects of Recent History on Perception and Decision

      Find Full text
      Creators
      Fritsche, M.
      Mostert, P.
      Lange, F.P. de
      Date of Archiving
      2018
      Archive
      Radboud Data Repository
      Data archive handle
      https://hdl.handle.net/11633/di.dccn.DSC_3018012.11_898
      DOI
      http://dx.doi.org/10.1016/j.cub.2017.01.006
      Related publications
      Opposite Effects of Recent History on Perception and Decision  
      Publication type
      Dataset
      Access level
      Restricted access
      Please use this identifier to cite or link to this item: https://hdl.handle.net/2066/203804   https://hdl.handle.net/2066/203804
      Display more detailsDisplay less details
      Organization
      PI Group Predictive Brain
      SW OZ DCC CO
      Audience(s)
      Life sciences
      Languages used
      English
      Key words
      perceptual decision making; orientation perception; adaptation; working memory; serial dependence
      Abstract
      Recent studies claim that visual perception of stimulus features, such as orientation, numerosity, and faces, is systematically biased toward visual input from the immediate past [1–3]. However, the extent to which these positive biases truly reflect changes in perception rather than changes in post perceptual processes is unclear [4, 5]. In the current study we sought to disentangle perceptual and decisional biases in visual perception. We found that postperceptual decisions about orientation were indeed systematically biased toward previous stimuli and this positive bias did not strongly depend on the spatial location of previous stimuli (replicating previous work [1]). In contrast, observers’ perception was repelled away from previous stimuli, particularly when previous stimuli were presented at the same spatial location. This repulsive effect resembles the well-known negative tilt-aftereffect in orientation perception [6]. Moreover, we found that the magnitude of the positive decisional bias increased when a longer interval was imposed between perception and decision, suggesting a shift of working memory representations toward the recent history as a source of the decisional bias. We conclude that positive aftereffects on perceptual choice are likely introduced at a post-perceptual stage. Conversely, perception is negatively biased away from recent visual input. We speculate that these opposite effects on perception and post-perceptual decision may derive from the distinct goals of perception and decision- making processes: whereas perception may be optimized for detecting changes in the environment, decision processes may integrate over longer time periods to form stable representations.
      This item appears in the following Collection(s)
      • Datasets [1485]
      • Donders Centre for Cognitive Neuroimaging [3661]
      • Faculty of Social Sciences [28689]
       
      •  Upload Full Text
      •  Terms of Use
      •  Notice and Takedown
      Bookmark and Share
      Admin login