[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"color-perception\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:color-perception":27},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,1,0,[8],{"id":9,"slug":10,"hasResults":11,"nctId":12,"briefTitle":13,"officialTitle":14,"acronym":4,"eligibilityCriteria":15,"healthyVolunteers":16,"sex":17,"minAge":18,"maxAge":19,"enrollmentInfo":20,"targetDuration":4,"studyType":23,"phases":4,"briefSummary":24,"conditions":25,"keywords":29,"overallStatus":39,"whyStopped":4,"lastUpdateSubmitDate":40,"lastUpdatePostDateStruct":41,"startDateStruct":44,"completionDateStruct":46,"leadSponsor":48,"locationsCount":5},"100644589","visual-perception-binocular-competition-and-fatigue-related-individual-differences-in-colour-and-illumination-judgement-100644589",false,"NCT07671144","Visual Perception, Binocular Competition, and Fatigue-Related Individual Differences in Colour and Illumination Judgement","Characterising Individual Differences in Colour Perception and Binocular Rivalry and Their Associations With Chronotype, Sex, and Sleep","Inclusion Criteria:\n\n* Adults aged 18 years or older.\n* Normal or corrected-to-normal visual acuity.\n* Normal or corrected-to-normal binocular vision.\n* Normal colour vision, or no self-reported colour vision deficiency.\n* Able to understand the study instructions and provide informed consent.\n* Able to complete computer-based visual perception tasks and self-report questionnaires.\n\nExclusion Criteria:\n\n* Self-reported colour vision deficiency.\n* Uncorrected visual impairment or eye conditions that may interfere with visual perception tasks.\n* Strabismus, amblyopia, or other binocular vision problems that may interfere with binocular rivalry testing.\n* History of neurological disorders, photosensitive epilepsy, or severe sensitivity to flickering visual stimuli.\n* Current condition or medication that, in the investigator's judgment, may substantially affect visual perception, attention, or task performance.\n* Inability to complete the task procedures or provide valid responses.",true,"ALL","18 Years","25 Years",{"count":21,"type":22},128,"ESTIMATED","OBSERVATIONAL","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.",[26,27,28],"Colour Perception","Color Perception","Binocular Rivalry",[30,31,32,33,34,35,36,37,38],"Colour perception","Color perception","Binocular rivalry","Individual differences","Chronotype","Sleep","Subjective fatigue","Sex differences","Visual perception","NOT_YET_RECRUITING","2026-06-22",{"date":42,"type":43},"2026-06-26","ACTUAL",{"date":45,"type":22},"2026-07",{"date":47,"type":22},"2026-12",{"name":49,"class":50},"The Hong Kong Polytechnic University","OTHER"]