Visual Perception, Binocular Rivalry, and Fatigue-Related Individual Differences in Colour and Illumination Judgement
2026年9月14日 更新者：Dr YU Cehao、The Hong Kong Polytechnic University
Characterising Individual Differences in Colour Perception and Binocular Rivalry and Their Associations With Chronotype, Sex, and Sleep
This observational study aims to characterise individual differences in colour perception and binocular rivalry.
Participants will complete computer-based visual perception tasks, including a colour perception task and a binocular rivalry task.
The study will first examine whether individuals show measurable differences in these perceptual responses.
It will then explore whether these differences are associated with chronotype, sex, sleep-related measures, and subjective fatigue.
The findings may help clarify how stable individual characteristics and daily physiological states relate to visual perception.
調査の概要
詳細な説明
Colour perception and binocular rivalry both show variability across individuals. However, the extent to which these individual differences are stable and whether they are associated with personal or physiological factors remains unclear. This study will use behavioural visual perception tasks to measure individual differences in colour perception and binocular rivalry. Participants will complete a colour perception task and a binocular rivalry task, along with questionnaire measures related to chronotype, sleep, fatigue, and demographic characteristics including sex.
The primary aim is to determine whether measurable individual differences are present in colour perception and binocular rivalry performance. The secondary aim is to examine whether these differences are associated with chronotype, sex, sleep-related variables, and subjective fatigue. The study is observational and does not involve a clinical intervention, drug, biologic product, or medical device.
研究の種類
観察的
入学 (推定)
128
連絡先と場所
このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。
研究連絡先
- 名前：Cehao Yu, PhD
- 電話番号：+852 3400 3012
- メール：cehao.yu@polyu.edu.hk
研究連絡先のバックアップ
- 名前：Junkai Che, Master
- 電話番号：+852 9783 8643
- メール：junkai.che@connect.polyu.hk
研究場所
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Hung Hom
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Kowloon、Hung Hom、香港
- 募集
- Child Development Centre
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コンタクト：
- Cehao Yu, PhD
- 電話番号：+852 3400 3012
- メール：cehao.yu@polyu.edu.hk
-
主任研究者：
- Cehao Yu, PhD
-
-
Kowloon
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Hung Hom、Kowloon、香港
- まだ募集していません
- The Hong Kong Polytechnic University, Department of Applied Social Sciences
-
コンタクト：
- Cehao Yu, PhD
- 電話番号：+852 3400 3012
- メール：cehao.yu@polyu.edu.hk
-
コンタクト：
- Junkai Che, Master
- 電話番号：+852 9783 8643
- メール：junkai.che@connect.polyu.hk
-
-
参加基準
研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。
適格基準
就学可能な年齢
- 大人
健康ボランティアの受け入れ
はい
サンプリング方法
非確率サンプル
調査対象母集団
Healthy adult volunteers will be recruited from the university community and/or the surrounding community.
Participants will complete computer-based colour perception and binocular rivalry tasks, together with self-report measures of chronotype, sleep, fatigue, and demographic characteristics.
説明
Inclusion Criteria:
- Adults aged 18 years or older.
- Normal or corrected-to-normal visual acuity.
- Normal or corrected-to-normal binocular vision.
- Normal colour vision, or no self-reported colour vision deficiency.
- Able to understand the study instructions and provide informed consent.
- Able to complete computer-based visual perception tasks and self-report questionnaires.
Exclusion Criteria:
- Self-reported colour vision deficiency.
- Uncorrected visual impairment or eye conditions that may interfere with visual perception tasks.
- Strabismus, amblyopia, or other binocular vision problems that may interfere with binocular rivalry testing.
- History of neurological disorders, photosensitive epilepsy, or severe sensitivity to flickering visual stimuli.
- Current condition or medication that, in the investigator's judgment, may substantially affect visual perception, attention, or task performance.
- Inability to complete the task procedures or provide valid responses.
研究計画
このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。
研究はどのように設計されていますか？
デザインの詳細
コホートと介入
グループ/コホート |
介入・治療 |
|---|---|
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Healthy Adult Participants
Healthy adult volunteers aged 18 to 25 years with normal or corrected-to-normal visual acuity and normal colour vision, recruited from the university and surrounding community.
In a single laboratory session, participants complete computer-based colour perception and binocular rivalry tasks and self-report questionnaires on chronotype, sleep, fatigue, and demographic characteristics.
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Participants will complete computer-based visual perception tasks, including a colour perception task and a binocular rivalry task.
These tasks are used to measure individual differences in perceptual responses and are not intended as a clinical intervention.
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Mean colour-adjustment values on the colour perception task
時間枠：Day 1 (single laboratory session)
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Colour perception will be measured using a computer-based colour adjustment task.
Participants will adjust the appearance of a target object or stimulus, and outcome variables will include adjustment values in colour space, such as chromaticity, hue, saturation, or luminance-related measures, depending on the final task implementation.
These measures will be used to characterise individual differences in colour perception.
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Day 1 (single laboratory session)
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Mean perceptual dominance duration during binocular rivalry
時間枠：Day 1 (single laboratory session)
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Binocular rivalry is measured with a computer-based dichoptic task in which a different image is presented to each eye.
Perceptual dominance duration is the mean length of time, in seconds, that one stimulus remains exclusively visible before perception switches to the other.
Longer mean durations indicate more stable, slower-switching rivalry.
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Day 1 (single laboratory session)
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Mean alternation rate during binocular rivalry
時間枠：Day 1 (single laboratory session)
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Binocular rivalry is measured with the same computer-based dichoptic task.
Alternation rate is the mean number of perceptual switches between the two stimuli per minute of viewing.
Higher alternation rates indicate faster perceptual switching between the two eyes' images.
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Day 1 (single laboratory session)
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二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Morningness-Eveningness Questionnaire (MEQ) score
時間枠：Day 1 (single laboratory session)
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Chronotype assessed using the Morningness-Eveningness Questionnaire (MEQ).
Total scores range from 16 to 86; higher scores indicate greater morningness (a stronger morning-type preference) and lower scores indicate greater eveningness.
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Day 1 (single laboratory session)
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Pittsburgh Sleep Quality Index (PSQI) global score
時間枠：Administered once, within 7 days before or at the single laboratory session (Day 1); the PSQI assesses sleep over the preceding 1 month.
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Sleep quality assessed using the Pittsburgh Sleep Quality Index (PSQI).
The global score is the sum of seven component scores and ranges from 0 to 21; higher scores indicate worse sleep quality (a global score above 5 indicates poor sleep quality).
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Administered once, within 7 days before or at the single laboratory session (Day 1); the PSQI assesses sleep over the preceding 1 month.
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Karolinska Sleepiness Scale (KSS) score
時間枠：Day 1: assessed immediately before and immediately after the visual perception tasks, which are completed within a single session lasting up to approximately 1 hour.
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Subjective sleepiness/fatigue assessed using the Karolinska Sleepiness Scale (KSS), a single-item 9-point scale.
Scores range from 1 to 9; higher scores indicate greater sleepiness.
The pre-task to post-task change in KSS score may also be reported.
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Day 1: assessed immediately before and immediately after the visual perception tasks, which are completed within a single session lasting up to approximately 1 hour.
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協力者と研究者
ここでは、この調査に関係する人々や組織を見つけることができます。
捜査官
- 主任研究者：Cehao Yu, PhD、The Hong Kong Polytechnic University
出版物と役立つリンク
研究に関する情報を入力する責任者は、自発的にこれらの出版物を提供します。これらは、研究に関連するあらゆるものに関するものである可能性があります。
一般刊行物
- Yang E, Blake R, McDonald JE 2nd. A new interocular suppression technique for measuring sensory eye dominance. Invest Ophthalmol Vis Sci. 2010 Jan;51(1):588-93. doi: 10.1167/iovs.08-3076. Epub 2009 Jul 23.
- Webster MA, Miyahara E, Malkoc G, Raker VE. Variations in normal color vision. II. Unique hues. J Opt Soc Am A Opt Image Sci Vis. 2000 Sep;17(9):1545-55. doi: 10.1364/josaa.17.001545.
- Foster DH. Color constancy. Vision Res. 2011 Apr 13;51(7):674-700. doi: 10.1016/j.visres.2010.09.006. Epub 2010 Sep 16.
- Wallisch P. Illumination assumptions account for individual differences in the perceptual interpretation of a profoundly ambiguous stimulus in the color domain: "The dress". J Vis. 2017 Apr 1;17(4):5. doi: 10.1167/17.4.5.
- Gegenfurtner KR, Bloj M, Toscani M. The many colours of 'the dress'. Curr Biol. 2015 Jun 29;25(13):R543-4. doi: 10.1016/j.cub.2015.04.043. Epub 2015 May 14.
- Lafer-Sousa R, Hermann KL, Conway BR. Striking individual differences in color perception uncovered by 'the dress' photograph. Curr Biol. 2015 Jun 29;25(13):R545-6. doi: 10.1016/j.cub.2015.04.053. Epub 2015 May 14.
- Toscani M, Gegenfurtner KR, Doerschner K. Differences in illumination estimation in #thedress. J Vis. 2017 Jan 1;17(1):22. doi: 10.1167/17.1.22.
研究記録日
これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。
主要日程の研究
研究開始 (実際)
2026年7月1日
一次修了 (推定)
2026年12月30日
研究の完了 (推定)
2026年12月30日
試験登録日
最初に提出
2026年6月22日
QC基準を満たした最初の提出物
2026年6月22日
最初の投稿 (実際)
2026年6月26日
学習記録の更新
投稿された最後の更新 (実際)
2026年9月15日
QC基準を満たした最後の更新が送信されました
2026年9月14日
最終確認日
2026年6月1日
詳しくは
本研究に関する用語
その他の研究ID番号
- HSEARS20260621001 (その他の識別子：The Hong Kong Polytechnic University)
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
未定
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米国FDA規制医薬品の研究
いいえ
米国FDA規制機器製品の研究
いいえ
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