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      • Faculty of Economics, Administrative And Social Sciences
      • Department of Psychology
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      Neural correlates of acquired color category effects

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      Author
      Clifford, A.
      Franklin, A.
      Holmes, A.
      Drivonikou V.G.
      Özgen, E.
      Davies I.R.L.
      Date
      2012
      Source Title
      Brain and Cognition
      Print ISSN
      0278-2626
      Volume
      80
      Issue
      1
      Pages
      126 - 143
      Language
      English
      Type
      Article
      Item Usage Stats
      154
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      168
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      Abstract
      Category training can induce category effects, whereby color discrimination of stimuli spanning a newly learned category boundary is enhanced relative to equivalently spaced stimuli from within the newly learned category (e.g., categorical perception). However, the underlying mechanisms of these acquired category effects are not fully understood. In the current study, Event-Related Potentials (ERPs) were recorded during a visual oddball task where standard and deviant colored stimuli from the same or different novel categories were presented. ERPs were recorded for a test group who were trained on these novel categories, and for an untrained control group. Category effects were only found for the test group on the trained region of color space, and only occurred during post-perceptual stages of processing. These findings provide new evidence for the involvement of cognitive mechanisms in acquired category effects and suggest that category effects of this kind can exist independent of early perceptual processes. © 2012.
      Keywords
      Category training
      Color
      Color categories
      Event-Related Potentials
      adult
      article
      brain function
      cognition
      color discrimination
      controlled study
      event related potential
      female
      functional assessment
      human
      human experiment
      male
      mental task
      normal human
      perceptive discrimination
      priority journal
      task performance
      visual discrimination
      visual nervous system
      visual stimulation
      Adult
      Cerebral Cortex
      Color Perception
      Concept Formation
      Discrimination (Psychology)
      Electroencephalography
      Evoked Potentials
      Female
      Humans
      Male
      Photic Stimulation
      Permalink
      http://hdl.handle.net/11693/21312
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/j.bandc.2012.04.011
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      • Department of Psychology 157
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