Pupillometory of glare perception - a medical diagnostic aid based on cognitive neuroscience and its application to visual environment assessment

2020 Fiscal Year Final Research Report

• Project/Area Number: 20K20313
• Project/Area Number (Other): 17H06292 (2017-2019)
• Research Category: Grant-in-Aid for Challenging Research (Pioneering)
• Allocation Type: Multi-year Fund (2020); Single-year Grants (2017-2019)
• Research Field: Human informatics and related fields
• Research Institution: Toyohashi University of Technology
• Principal Investigator: Nakauchi Shigeki 豊橋技術科学大学, 工学(系)研究科(研究院), 教授 (00252320)
• Co-Investigator(Kenkyū-buntansha): 南 哲人 豊橋技術科学大学, 工学(系)研究科(研究院), 教授 (70415842) ; 東 広志 京都大学, 情報学研究科, 助教 (70734474)
• Project Period (FY): 2017-06-30 – 2021-03-31
• Keywords: グレア錯視 / 明るさ知覚 / 瞳孔反応 / 時間知覚

Outline of Final Research Achievements

This study have focused on the glare illusion and have attempted to quantify various subjective quantities through the relationship between subjective brightness and pupillary responses. So far, we have investigated 1) the measurement of pupillary responses to glare and control stimuli, 2) the measurement of pupillary responses and subjective brightness to differently colored equal-intensity glare stimuli, and 3) the relationship between subjective brightness, time perception, and associated pupillary responses. The results indicate that pupils reflect the subjective brightness rather than the physical luminance of the stimuli, and that the pupil response is a useful cue to measure the subjective quantity quantitatively.

Free Research Field

視覚認知情報学

Academic Significance and Societal Importance of the Research Achievements

瞳孔系は明るさ知覚に限らず、様々な主観的知覚の程度や質を反映することが期待される。したがって、これまで自己申告やアンケートに依存していた主観量をより他覚的に把握する一方法として瞳孔計測は有用であり、光感受性障害など純粋に主観量にのみ症状が現れる場合の客観的判断の足掛かりとなるほか、視覚的デザインの効果や誘目性などの客観評価への展開も期待できる。