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Postdiction as inteligent information processing of apparent motion

Research Project

Project/Area Number 16K13508
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Experimental psychology
Research InstitutionKyushu University

Principal Investigator

Ito Hiroyuki  九州大学, 芸術工学研究院, 教授 (40243977)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywordssaltation illusion / postdiction / 仮現運動 / 主観的輪郭 / ポストディクション / saltation効果 / 視覚 / 錯視 / 視聴覚相互作用
Outline of Final Research Achievements

The visual saltation illusion with three flash stimuli was investigated with luminance-defined, texture-defined, and subjective figures. After a visual object flashed twice at the same position (first and second flashes), another object flashed (third flash) at a displaced position. In a typical case, the second flash was perceived to occur at a position between the first and third flashes. This study shows that a subjective or a texture-defined figure could produce the saltation illusion more effectively than a luminance-defined (black) figure. This phenomenon would not be explained with the traditional concept of apparent motion. Additionally in the study, a new illusion of flashes in the peripheral vision has been found.

Academic Significance and Societal Importance of the Research Achievements

本研究の学術的意義は、視覚的なsaltation 錯視において、仮現運動が起こらないはずの点滅条件下でもポストディクションにより動きの表象が作られることと、それが主観的輪郭において強く起こることを発見したことであり、動きの見えの新しい側面を記述したことになる。本研究では、同時に新しい点滅の錯視の発見にもつながっており、新しい研究の発展にも寄与することができた。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (8 results)

All 2019 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 4 results,  Invited: 1 results)

  • [Journal Article] The Peripheral Flicker Illusion2017

    • Author(s)
      Hiroyuki Ito, Tomomi Koizumi
    • Journal Title

      i-Perception

      Volume: 8 Issue: 6 Pages: 1-13

    • DOI

      10.1177/2041669517747891

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] フリッカー錯視においての背景輝度の効果について2019

    • Author(s)
      新川美迪、伊藤裕之
    • Organizer
      日本視覚学会冬季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] まばたき直後の視覚体験の時間的遡り:視聴覚刺激の時間順序判断課題による測定2019

    • Author(s)
      岸田拓哉、伊藤裕之
    • Organizer
      日本視覚学会冬季大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Visual saltation illusion with subjective contours2018

    • Author(s)
      Ito H
    • Organizer
      European Conference on Visual Perception
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Visual saltation illusion with flickering subjective figures2018

    • Author(s)
      Ito H
    • Organizer
      International Five Sense Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of background luminance on the peripheral flicker illusion2018

    • Author(s)
      Niikawa M, Ito H
    • Organizer
      International Five Sense Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 周辺視における錯視2018

    • Author(s)
      伊藤裕之
    • Organizer
      日本バーチャルリアリティ学会VR心理学研究会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Factors affecting the peripheral flicker illusion2017

    • Author(s)
      Hiroyuki Ito and Tomomi Koizumi
    • Organizer
      The 33rd Annual Meeting of the International Society for Psychophysics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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