Ignite Creation Date:
2025-12-24 @ 12:05 PM
Ignite Modification Date:
2025-12-28 @ 7:20 PM
Study NCT ID:
NCT05472961
Status:
WITHDRAWN
Last Update Posted:
2025-02-21
First Post:
2022-07-21
Is Gene Therapy:
True
Has Adverse Events:
False
Brief Title:
Eye Movements in Visual Search
Sponsor:
Organization:
Raw JSON
{'hasResults': False, 'derivedSection': {'miscInfoModule': {'versionHolder': '2025-12-24'}}, 'protocolSection': {'designModule': {'phases': ['NA'], 'studyType': 'INTERVENTIONAL', 'designInfo': {'allocation': 'NA', 'maskingInfo': {'masking': 'NONE', 'maskingDescription': 'Manipulation is within-participant. Participants view multiple visual search arrays in an experimental session. They will be masked with regards to the difficulty and timing manipulations until they experience them on a trial.'}, 'primaryPurpose': 'BASIC_SCIENCE', 'interventionModel': 'SINGLE_GROUP', 'interventionModelDescription': 'Participants are asked to view an array of objects on a computer screen equipped with a noninvasive eye tracker. They are asked to search for a target object among one or more distractor objects and may be asked to respond to a feature of the target object with a key press that was selected via a gaze shift.'}, 'enrollmentInfo': {'type': 'ACTUAL', 'count': 0}}, 'statusModule': {'whyStopped': 'No human participants were required as part of the computational modelling for this experiment during the period of this project. No participants were recruited and no data was collected.', 'overallStatus': 'WITHDRAWN', 'startDateStruct': {'date': '2025-02-20', 'type': 'ACTUAL'}, 'expandedAccessInfo': {'hasExpandedAccess': False}, 'statusVerifiedDate': '2025-02', 'completionDateStruct': {'date': '2025-02-20', 'type': 'ACTUAL'}, 'lastUpdateSubmitDate': '2025-02-19', 'studyFirstSubmitDate': '2022-07-21', 'studyFirstSubmitQcDate': '2022-07-21', 'lastUpdatePostDateStruct': {'date': '2025-02-21', 'type': 'ACTUAL'}, 'studyFirstPostDateStruct': {'date': '2022-07-25', 'type': 'ACTUAL'}, 'primaryCompletionDateStruct': {'date': '2025-02-20', 'type': 'ACTUAL'}}, 'outcomesModule': {'primaryOutcomes': [{'measure': 'Eye Tracking Data', 'timeFrame': 'During 1-2 hour experimental session', 'description': 'Saccade Events, Fixation Events, Pupil Size'}, {'measure': 'Response Data', 'timeFrame': 'During 1-2 hour experimental session', 'description': 'Response Time, Error Rate'}]}, 'oversightModule': {'isUsExport': False, 'oversightHasDmc': False, 'isFdaRegulatedDrug': False, 'isFdaRegulatedDevice': False}, 'conditionsModule': {'keywords': ['eye tracker', 'visual perception'], 'conditions': ['Healthy']}, 'descriptionModule': {'briefSummary': 'Using a noninvasive eye tracker, the investigators will measure how participants move their eyes to objects arrayed on a computer screen. Participants will be asked to find one element among many.', 'detailedDescription': 'The investigators measure how quickly and how accurately participants can move their eyes from a central fixation point to a target object arrayed with one or more distractor objects. A noninvasive eye tracker will be used to measure their eye movements. Participants may also be asked to make a decision about a feature of the target they have selected with a key press. Difficulty of the search for the target object and difficulty of the decision about a feature of the target object will be manipulated.'}, 'eligibilityModule': {'sex': 'ALL', 'stdAges': ['ADULT'], 'maximumAge': '50 Years', 'minimumAge': '18 Years', 'healthyVolunteers': False, 'eligibilityCriteria': 'Inclusion Criteria:\n\n* Sona System users (open to the public)\n\nExclusion Criteria:\n\n* participants that fail the Ishihara color vision screening test\n* participants with acuity worse than 20/20 with or without correction\n* children under 18\n* adults over 50'}, 'identificationModule': {'nctId': 'NCT05472961', 'briefTitle': 'Eye Movements in Visual Search', 'organization': {'class': 'OTHER', 'fullName': 'Vanderbilt University'}, 'officialTitle': 'Eye Movement Studies of Visual Search', 'orgStudyIdInfo': {'id': '140970'}}, 'armsInterventionsModule': {'armGroups': [{'type': 'EXPERIMENTAL', 'label': 'Within Subjects Experimental Design', 'description': 'All participants are tested in all conditions.', 'interventionNames': ['Behavioral: Target and Stimulus']}], 'interventions': [{'name': 'Target and Stimulus', 'type': 'BEHAVIORAL', 'description': 'The investigators manipulate the difficulty of search for the target object by manipulating the number of distractor objects and/or the similarity between the target and distractors. The investigators manipulate the difficulty of the decision about a feature by manipulating the similarity of the feature to a criterion. The investigators manipulate the timing of when the decision feature appears on the object relative to the onset of the array and/or the onset of the saccade away from fixation in a gaze-contingent manner.', 'armGroupLabels': ['Within Subjects Experimental Design']}]}, 'contactsLocationsModule': {'locations': [{'zip': '37240', 'city': 'Nashville', 'state': 'Tennessee', 'country': 'United States', 'facility': 'Vanderbilt University', 'geoPoint': {'lat': 36.16589, 'lon': -86.78444}}]}, 'ipdSharingStatementModule': {'infoTypes': ['STUDY_PROTOCOL', 'SAP', 'ANALYTIC_CODE'], 'timeFrame': 'Data will be shared after all analyses and modeling of the data are complete and manuscripts resulting from the research are accepted for publication.', 'ipdSharing': 'YES', 'description': 'Only de-identified behavioral data will be shared with other investigators upon request.', 'accessCriteria': 'We will share data with investigators who request (after research using the data are complete).'}, 'sponsorCollaboratorsModule': {'leadSponsor': {'name': 'Vanderbilt University', 'class': 'OTHER'}, 'responsibleParty': {'type': 'PRINCIPAL_INVESTIGATOR', 'investigatorTitle': 'Distinguished Professor of Psychology', 'investigatorFullName': 'Thomas J. Palmeri', 'investigatorAffiliation': 'Vanderbilt University'}}}}