Perceptual learning of bisection stimuli under roving: Slow and largely specific

Khatuna Parkosadze*, Thomas U. Otto, Maka Malania, Archil Kezeli, Michael H. Herzog

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

In perceptual learning, performance often improves within a short time if only one stimulus variant is presented, such as a line bisection stimulus with one outer-line-distance. However, performance stagnates if two bisection stimuli with two outer-line-distances are presented randomly interleaved. Recently, S. G. Kuai, J. Y. Zhang, S. A. Klein, D. M. Levi, and C. Yu, (2005) proposed that learning under roving conditions is impossible in general. Contrary to this proposition, we show here that perceptual learning with bisection stimuli under roving is possible with extensive training of 18000 trials. Despite this extensive training, the improvement of performance is still largely specific. Furthermore, this improvement of performance cannot be explained by an accommodation to stimulus uncertainty caused by roving.

Original languageEnglish
Article number5
Number of pages8
JournalJournal of Vision
Volume8
Issue number1
DOIs
Publication statusPublished - 2008

Keywords

  • bisection task
  • roving
  • stimulus uncertainty
  • PRIMARY VISUAL-CORTEX
  • CONTRAST DISCRIMINATION
  • ORIENTATION
  • CONTEXT
  • TASK
  • IMPROVEMENT
  • POSITION
  • ACUITY
  • SLEEP
  • LEVEL

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