[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-studies-list:{\"conditionNormalized\":\"time-perception\",\"overallStatus\":[\"RECRUITING\",\"AVAILABLE\",\"NOT_YET_RECRUITING\"],\"orderBy\":\"LastUpdateSubmitDate:desc\",\"size\":25,\"offset\":0}":3,"health-study-condition:time-perception":31},{"pageToken":4,"total":5,"offset":6,"count":5,"results":7},null,7,0,[8,56,82,107,132,162,193],{"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":24,"briefSummary":26,"conditions":27,"keywords":32,"overallStatus":43,"whyStopped":4,"lastUpdateSubmitDate":44,"lastUpdatePostDateStruct":45,"startDateStruct":48,"completionDateStruct":50,"leadSponsor":52,"locationsCount":55},"100644966","chronotype-alignment-and-time-perception-100644966",false,"NCT07677111","Chronotype Alignment and Time Perception","Circadian Match and Mismatch Effects on Temporal Cognition in Morning- and Evening-Type Adults","Inclusion Criteria:\n\n* Healthy adult, 18-40 years\n* Clear morning-type or evening-type on the Morningness-Eveningness Questionnaire (MEQ-SA); intermediate types excluded (state exact cut-offs, e.g. evening-type 41 or below, morning-type 59 or above)\n* Normal or corrected-to-normal visual acuity\n* Normal colour vision (e.g. Ishihara screening)\n* Fluent in the testing-site language (Danish, Chinese, or English)\n* Able to attend both an early-morning (about 08:00) and a late-evening (about 22:00) session\n\nExclusion Criteria:\n\n* Intermediate chronotype (MEQ in the middle band)\n* Night or rotating shift work in the past 3 months, or recent trans-meridian travel (more than 2 time zones in the past 4 weeks)\n* Diagnosed sleep disorder (e.g. insomnia, sleep apnoea)\n* Current psychiatric or neurological disorder\n* Use of sleep medication or psychoactive or CNS-active drugs\n* Colour-vision deficiency\n* Substance-use disorder",true,"ALL","18 Years","55 Years",{"count":21,"type":22},240,"ESTIMATED","INTERVENTIONAL",[25],"NA","People differ in chronotype - whether they function best in the morning (\"larks\") or the evening (\"owls\"). This study asks whether the match or mismatch between a person's chronotype and the time of day at which they are tested changes how they perceive time.\n\nHealthy morning-type and evening-type adults at three sites (Aarhus, Denmark; Changzhou, China; and Hong Kong) complete the same battery of perception and cognition tasks twice - once in the early morning (about 08:00) and once late in the evening (about 22:00), in counterbalanced order. The primary outcome is the accuracy (signed bias) of time-perception judgements; the key comparison is the interaction between chronotype and time of day (the \"synchrony effect\").\n\nSecondary measures include timing precision, the subjective passage of time, sleepiness, mood, colour perception (with and without blue-blocking glasses) and perceptual decision-making. By testing the same protocol across three cultures and latitudes, the study examines whether circadian match\u002Fmismatch effects on temporal cognition generalise across populations.",[28,29,30,31],"Chronotype","Circadian Rhythm","Sleep","Time Perception",[33,34,35,36,37,38,39,40,41,42],"chronotype","morningness-eveningness","synchrony effect","time perception","temporal cognition","circadian rhythm","time-of-day","duration discrimination","arousal","cross-cultural","RECRUITING","2026-06-29",{"date":46,"type":47},"2026-06-30","ACTUAL",{"date":49,"type":47},"2025-09-01",{"date":51,"type":22},"2028-06-30",{"name":53,"class":54},"The Hong Kong Polytechnic University","OTHER",1,{"id":57,"slug":58,"hasResults":11,"nctId":59,"briefTitle":60,"officialTitle":60,"acronym":61,"eligibilityCriteria":62,"healthyVolunteers":16,"sex":17,"minAge":4,"maxAge":4,"enrollmentInfo":63,"targetDuration":4,"studyType":65,"phases":4,"briefSummary":66,"conditions":67,"keywords":69,"overallStatus":43,"whyStopped":4,"lastUpdateSubmitDate":73,"lastUpdatePostDateStruct":74,"startDateStruct":76,"completionDateStruct":78,"leadSponsor":80,"locationsCount":55},"100619160","evaluation-of-a-neuropsychological-tool-to-assess-temporal-processing-abilities-in-alzheimers-disease-100619160","NCT07341009","Evaluation of a Neuropsychological Tool to Assess Temporal Processing Abilities in Alzheimer's Disease","CHRONOS","Inclusion Criteria:\n\n* No objection from the participant or their legal representative, if applicable, prior to or during the assessment\n* Deficit in at least two cognitive functions, including episodic memory.\n\nExclusion Criteria:\n\n* History of head trauma with loss of consciousness lasting more than 1 hour\n* Presence of clinically significant major psychiatric disorders (according to DSM-IV-TR criteria)\n* Use of medications likely to alter cognitive and\u002For brain function (decision by the principal investigator)",{"count":64,"type":22},40,"OBSERVATIONAL","Perceiving and representing the passage of time allows us to temporally organize perceptions and memories for the coordination of actions, planning, and the mobilization of cognitive processes toward a goal. This innovative project aims to clarify the profile of time impairment associated with normal aging and the progression of age-related pathologies. This project proposes to develop a new neuropsychological tool for quantifying and preventing changes in the relationship to time associated with Alzheimer's disease. Four aspects of time are distinguished, which are measured separately and distributed along a continuum between perception and memory: (a) perception of simultaneity and order; (b) processing of durations; (c) subjective sense of the passage of time; and (d) mental time travel. Crucially, many neurological and psychiatric disorders are associated with impairment in one or more aspects of time. However, time remains largely unexplored in clinical practice. Patients with Alzheimer's disease will complete the CHRONOS battery. This battery allows for a rapid assessment (approximately ten minutes) of the four aspects of time. This new battery will enable the identification of behavioral markers aimed at improving prognosis and prevention regarding individual cognitive trajectories of aging. The relationship to time is closely linked to each person's personal experience. This project will help to put into words difficulties that are not always expressed in terms of time. Thus, considering these pathologies from the perspective of time aims to better understand and prevent their difficulties and to guide the identification of new markers and new avenues for remediation.",[68,31],"Alzheimer's Disease (AD)",[37,70,71,72],"dementia","cognition","neuropsychology","2026-03-17",{"date":75,"type":47},"2026-03-19",{"date":77,"type":47},"2025-12-30",{"date":79,"type":22},"2027-11-01",{"name":81,"class":54},"University Hospital, Caen",{"id":83,"slug":84,"hasResults":11,"nctId":85,"briefTitle":86,"officialTitle":86,"acronym":4,"eligibilityCriteria":87,"healthyVolunteers":16,"sex":17,"minAge":88,"maxAge":89,"enrollmentInfo":90,"targetDuration":4,"studyType":23,"phases":91,"briefSummary":92,"conditions":93,"keywords":95,"overallStatus":43,"whyStopped":4,"lastUpdateSubmitDate":98,"lastUpdatePostDateStruct":99,"startDateStruct":101,"completionDateStruct":103,"leadSponsor":105,"locationsCount":55},"100617340","the-effect-of-a-continuous-1-hour-time-delay-on-circadian-rhythms-100617340","NCT07317349","The Effect of a Continuous 1-Hour Time Delay on Circadian Rhythms","Inclusion Criteria\n\n* Healthy adults aged 23-45 years\n* Part of a heterosexual, cohabiting couple willing to participate together in a five-day in-laboratory study\n* Both partners meet all inclusion criteria\n* Completion of at least upper-secondary education\n* Maintain a regular sleep-wake schedule\n* Habitual sleep timing within a normative range (non-extreme chronotype), assessed using the Morningness-Eveningness Questionnaire (MEQ) or the Munich Chronotype Questionnaire (MCTQ)\n* Both partners fall within the acceptable chronotype range to ensure aligned sleep-wake patterns\n* Low seasonality scores on the Seasonal Pattern Assessment Questionnaire (SPAQ)\n* Free from underlying sleep or mood disorders\n\nExclusion Criteria\n\n* Engages in night-shift work or maintains an irregular work or sleep schedule\n* International travel involving a time-zone change of more than two hours within the past two months, or anticipated travel before study completion\n* Diagnosed neurological, psychiatric, or sleep disorder (e.g., insomnia, sleep apnea, bipolar disorder)\n* High risk of sleep apnea, defined as a Berlin Questionnaire score \\>2 (Lauritzen et al., 2018)\n* Use of medications known to affect sleep, alertness, melatonin secretion, or circadian timing\n* Unable or unwilling to comply with behavioral restrictions, including refraining from electronic devices displaying time cues unless clocks are removed and devices are disconnected from Wi-Fi\n* Unable or unwilling to comply with consumption restrictions, including abstaining from caffeine, alcohol, and melatonin-rich foods during the study\n* Extreme chronotype, defined as a habitual midsleep time outside 03:00-05:00 on the MCTQ or classification as an extreme morning or extreme evening type on the MEQ\n* Daily caffeine consumption exceeding 400 mg (approximately 4-5 cups of coffee)\n* Current smoker or smoking within the past six months","23 Years","45 Years",{"count":64,"type":22},[25],"The purpose of this study is to investigate whether the experience of a daily time delay can affect our internal circadian rhythm.",[94,31,30],"Circadian Rhythms",[96,97],"circadian phase delay","Healthy adults","2026-01-14",{"date":100,"type":47},"2026-01-16",{"date":102,"type":22},"2025-12-20",{"date":104,"type":22},"2027-08-30",{"name":106,"class":54},"University of Aarhus",{"id":108,"slug":109,"hasResults":11,"nctId":110,"briefTitle":111,"officialTitle":112,"acronym":113,"eligibilityCriteria":114,"healthyVolunteers":16,"sex":17,"minAge":88,"maxAge":89,"enrollmentInfo":115,"targetDuration":4,"studyType":23,"phases":117,"briefSummary":118,"conditions":119,"keywords":120,"overallStatus":43,"whyStopped":4,"lastUpdateSubmitDate":124,"lastUpdatePostDateStruct":125,"startDateStruct":127,"completionDateStruct":129,"leadSponsor":131,"locationsCount":55},"100615437","circadian-timing-and-time-perception-in-healthy-adults-100615437","NCT07292597","Circadian Timing and Time Perception in Healthy Adults","How Do Individual Differences in Circadian Rhythms Influence Time Perception?","ChronoTime","Inclusion Criteria:\n\n* Aged 23 to 45 years\n* Able to understand and communicate in Danish\n* Completed at least upper secondary education (e.g., gymnasium)\n* Categorized as either a Morning Type (MT) or Evening Type (ET) based on standardized chronotype assessments:\n\n  * Munich Chronotype Questionnaire (MCTQ):\n\n    * MT: sleep midpoint on free days (MSFsc) ≤ 03:00\n    * ET: sleep midpoint on free days (MSFsc) ≥ 05:00\n  * Morningness-Eveningness Questionnaire (MEQ):\n\n    * One of four defined chronotype categories (definitely morning, moderately morning, moderately evening, definitely evening).\n\nExclusion Criteria:\n\n* Current engagement in shift work, rotating schedules, or other forms of irregular sleep-wake timing\n* Diagnosis of any neurological, psychiatric, or sleep-related disorder (e.g., insomnia, narcolepsy, sleep apnea)\n* Use of medications that affect sleep, alertness, or circadian functioning (e.g., melatonin, stimulants, antidepressants)\n* International travel across time zones within the four weeks preceding study participation\n* Are classified as having an intermediate chronotype based on validated chronotype assessments (MCTQ or MEQ), as this group does not provide the necessary contrast to evaluate circadian alignment effects.",{"count":116,"type":22},128,[25],"This study examines how a person's natural daily rhythm (\"chronotype\") affects the way time is experienced and judged. Healthy Danish-speaking adults (23-45 years) who are clearly morning-type or evening-type will complete two lab sessions in a crossover design: one at their preferred time of day (e.g., morning for morning-types) and one at the opposite time (misaligned). In each session, participants do brief computerized tasks that measure time estimation\u002Fproduction, vigilance (psychomotor vigilance task), decision-making, and responses to social information, plus simple color-vision tasks. Short questionnaires about sleepiness, mood, fatigue, and the subjective \"passage of time\" are collected before, during, and after testing. A subset will wear a wrist actigraphy device for one week beforehand to characterize sleep-wake patterns.\n\nTesting is conducted under standardized lab conditions with scheduled breaks. The main goal is to determine whether time judgments and vigilance are less accurate during the misaligned session and whether decision-making and social responses also vary with circadian timing. Risks are minimal and mainly relate to temporary tiredness when tested at a non-preferred time; participants may stop at any time. Participation is voluntary. Data are pseudonymized and handled under GDPR. Participants receive DKK 300 after completing both sessions (pro-rated if they withdraw early). Results will be published regardless of outcome, and de-identified data\u002Fcode will be shared after publication.This study examines how a person's natural daily rhythm (\"chronotype\") affects the way time is experienced and judged. Healthy Danish-speaking adults (23-45 years) who are clearly morning-type or evening-type will complete two lab sessions in a crossover design: one at their preferred time of day (e.g., morning for morning-types) and one at the opposite time (misaligned). In each session, participants do brief computerized tasks that measure time estimation\u002Fproduction, vigilance (psychomotor vigilance task), decision-making, and responses to social information, plus simple color-vision tasks. Short questionnaires about sleepiness, mood, fatigue, and the subjective \"passage of time\" are collected before, during, and after testing. A subset will wear a wrist actigraphy device for one week beforehand to characterize sleep-wake patterns.\n\nTesting is conducted under standardized lab conditions with scheduled breaks. The main goal is to determine whether time judgments and vigilance are less accurate during the misaligned session and whether decision-making and social responses also vary with circadian timing. Risks are minimal and mainly relate to temporary tiredness when tested at a non-preferred time; participants may stop at any time. Participation is voluntary. Data are pseudonymized and handled under GDPR. Participants receive DKK 300 after completing both sessions (pro-rated if they withdraw early). Results will be published regardless of outcome, and de-identified data\u002Fcode will be shared after publication.",[29,31],[33,121,40,122,123],"circadian misalignment","time production","time estimation","2025-12-19",{"date":126,"type":47},"2025-12-22",{"date":128,"type":47},"2025-10-25",{"date":130,"type":22},"2027-06-30",{"name":106,"class":54},{"id":133,"slug":134,"hasResults":11,"nctId":135,"briefTitle":136,"officialTitle":137,"acronym":138,"eligibilityCriteria":139,"healthyVolunteers":16,"sex":17,"minAge":88,"maxAge":89,"enrollmentInfo":140,"targetDuration":4,"studyType":23,"phases":142,"briefSummary":143,"conditions":144,"keywords":147,"overallStatus":43,"whyStopped":4,"lastUpdateSubmitDate":124,"lastUpdatePostDateStruct":156,"startDateStruct":157,"completionDateStruct":159,"leadSponsor":161,"locationsCount":55},"100615605","circadian-rhythms-and-time-perception-in-healthy-adults-during-constant-wakefulness-100615605","NCT07294781","Circadian Rhythms and Time Perception in Healthy Adults During Constant Wakefulness","CircaTime: Effects of Circadian Rhythms on Time Perception During a 36-Hour Constant Routine in Healthy Adults","CircaTime","Inclusion Criteria:\n\n* Age 23 to 45 years.\n* Able and willing to provide written informed consent.\n* Fluent in Danish and able to understand study procedures and instructions.\n* Generally healthy, as assessed by medical history, screening questionnaires, and basic clinical measures (e.g., blood pressure, heart rate).\n* Self-reported regular sleep-wake schedule for at least 4 weeks prior to the laboratory visit (typically 6.5-9 hours of sleep per night, with usual sleep period between approximately 22:00-01:00 and 06:00-09:00).\n* Body mass index (BMI) within a non-extreme range (for example, approximately 18.5-30 kg\u002Fm²), if required by the study physician.\n* No regular night work or rotating shift work during the 3 months before participation.\n* No travel across more than 2 time zones in the 2 months before the constant-routine session.\n* Willing to abstain from caffeine, nicotine, alcohol, and recreational drugs for the specified washout periods before and during the 36-hour constant-routine session.\n* For participants who can become pregnant: negative pregnancy test at screening\u002Farrival and agreement to use reliable contraception for the duration of participation.\n\nExclusion Criteria:\n\n* Any known or suspected major sleep disorder (e.g., insomnia disorder, obstructive sleep apnoea, restless legs syndrome, narcolepsy), based on self-report or prior diagnosis.\n* Current or past major psychiatric or neurological disorders (e.g., major depressive disorder, bipolar disorder, psychotic disorders, epilepsy), unless considered mild and stable and explicitly approved by the study physician.\n* Chronic medical conditions that could be worsened by prolonged wakefulness or that might confound outcome measures, such as significant cardiovascular disease, uncontrolled hypertension, diabetes mellitus, severe respiratory disease, or other serious systemic illness.\n* Regular use of medications or supplements that may affect sleep, circadian rhythms, melatonin secretion, alertness, or mood (e.g., hypnotics, sedative-hypnotics, melatonin, stimulants, certain antidepressants or beta-blockers), unless a safe washout is possible and approved by the study physician.\n* High habitual caffeine intake (for example, \\>400 mg\u002Fday) or nicotine dependence if the participant is unable or unwilling to abstain for the required washout periods.\n* Current harmful alcohol use or substance use disorder, or frequent use of recreational drugs.\n* Pregnancy or breastfeeding.\n* Previous severe adverse reaction to sleep deprivation, extended wakefulness, or similar laboratory protocols.\n* Claustrophobia or inability to tolerate prolonged stays in a controlled laboratory environment.\n* Any condition or circumstance that, in the judgement of the investigators, would make participation unsafe, interfere with the 36-hour wakefulness protocol, or compromise data quality (e.g., inability to remain awake despite support, strong fear of needles or saliva sampling, or inability to comply with study restrictions).",{"count":141,"type":22},30,[25],"This study examines how the internal body clock (circadian rhythms) influences the way healthy adults experience time, think, and feel when they stay awake for an extended period. Participants will spend about 36 hours in a controlled sleep laboratory while remaining awake the entire time. Light, posture, food intake, and activity are kept as constant as possible (a \"constant routine\") so that changes over time mainly reflect the body's internal clock and increasing sleepiness, rather than changes in the environment. Every two hours, participants complete a brief test battery that includes ratings of sleepiness and mood, a reaction-time task, and short tasks that assess how fast or slow time seems to pass, how accurately they can estimate time intervals, how they respond to simple decisions, and how they judge colours. Saliva samples are collected repeatedly to measure melatonin, a hormone that indicates circadian phase. By comparing changes in behaviour, perception, and melatonin levels across the 36-hour wake period, the study aims to identify when during the circadian cycle people are most vulnerable to distortions in time perception and reduced alertness. The findings may help improve scheduling of shift work and other activities that require sustained wakefulness.",[145,29,146,31],"Sleep Deprivation","Healthy Volunteers",[148,149,150,151,152,153,154,155,97],"Circadian rhythms","Constant routine","Extended wakefulness","Sleep loss","Time perception","Subjective time","Psychomotor vigilance task","Dim light melatonin onset",{"date":126,"type":47},{"date":158,"type":47},"2025-12-05",{"date":160,"type":22},"2027-12-30",{"name":106,"class":54},{"id":163,"slug":164,"hasResults":11,"nctId":165,"briefTitle":166,"officialTitle":166,"acronym":167,"eligibilityCriteria":168,"healthyVolunteers":11,"sex":17,"minAge":169,"maxAge":170,"enrollmentInfo":171,"targetDuration":4,"studyType":23,"phases":172,"briefSummary":173,"conditions":174,"keywords":178,"overallStatus":43,"whyStopped":4,"lastUpdateSubmitDate":184,"lastUpdatePostDateStruct":185,"startDateStruct":187,"completionDateStruct":189,"leadSponsor":191,"locationsCount":55},"100383290","neural-signatures-of-processing-the-temporal-features-of-auditory-events-from-preterm-infancy-to-adulthood-100383290","NCT04270734","Neural Signatures of Processing the Temporal Features of Auditory Events: From Preterm Infancy to Adulthood","PremaTempo","Inclusion Criteria:\n\n* full term neonates between 25 and 36 weeks gestational age\n\nExclusion Criteria:\n\n* Neonates outside the age range","0 Days","1 Day",{"count":21,"type":22},[25],"Premature neonates are able to discriminate phonemes and voice from 28wGA at a time the neuronal network establish contact between the environment and the cortical neurones. In the present monocentric study the investigators will analyse the response of the cortical network in premature aged between 25 and 36 wGA in response to auditory stimuli using High Resolution Electroencephalography and High Density Near Infrared Spectroscopy.",[31,175,176,177],"EEG","Premature Neonates","Discrimination",[36,179,175,180,181,182,183],"rhythm","fNIRS","ERP","premature neonates","discrimination","2025-06-05",{"date":186,"type":47},"2025-06-10",{"date":188,"type":47},"2020-02-01",{"date":190,"type":22},"2027-02",{"name":192,"class":54},"Centre Hospitalier Universitaire, Amiens",{"id":194,"slug":195,"hasResults":11,"nctId":196,"briefTitle":197,"officialTitle":197,"acronym":198,"eligibilityCriteria":199,"healthyVolunteers":11,"sex":17,"minAge":169,"maxAge":18,"enrollmentInfo":200,"targetDuration":4,"studyType":23,"phases":202,"briefSummary":203,"conditions":204,"keywords":206,"overallStatus":43,"whyStopped":4,"lastUpdateSubmitDate":208,"lastUpdatePostDateStruct":209,"startDateStruct":211,"completionDateStruct":213,"leadSponsor":215,"locationsCount":55},"100471335","multimodal-analysis-of-the-young-brain-on-rhythm-perception-from-premature-neonates-to-infants-100471335","NCT05417542","Multimodal Analysis of the Young Brain on Rhythm Perception: From Premature Neonates to Infants","Exposition","Inclusion Criteria:\n\n* Full term neonates between 28 and 40 weeks Gestational Age\n\nExclusion Criteria:\n\n* Neonates outside the age range",{"count":201,"type":22},200,[25],"Premature neonates are able to discriminate phonemes and voice from 28wGA at a time the neuronal network establish contact between the environment and the cortical neurones. In the present monocentric study the investigators will analyse the response of the cortical network in premature aged between 28 and 40 wGA in response to auditory stimuli using High Resolution Electroencephalography and High Density Near Infrared Spectroscopy",[31,205,175,180,181,176,177],"Rhythm",[152,179,175,180,181,207,177],"Premature neonates","2025-05-22",{"date":210,"type":47},"2025-05-28",{"date":212,"type":47},"2022-05-31",{"date":214,"type":22},"2029-05",{"name":192,"class":54}]