Raw JSON
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[{'id': 'OG000', 'title': 'Acute Stress', 'description': 'Participants complete the socially evaluated cold pressor test (SECPT), a validated laboratory-based stress induction procedure involving submerging an arm in an ice bath\n\nSocially Evaluated Cold Pressor Test: The SECPT is a brief validated laboratory-based stress induction containing both physical and social elements'}, {'id': 'OG001', 'title': 'No Stress', 'description': 'Participants complete a matched condition with no stress-related exposure involving submerging an arm in warm water\n\nControl: This is matched to the SECPT but with warm instead of cold water'}], 'classes': [{'categories': [{'measurements': [{'value': '-0.286', 'spread': '1.270', 'groupId': 'OG000'}, {'value': '-0.281', 'spread': '1.199', 'groupId': 'OG001'}]}]}], 'analyses': [{'pValue': '0.083', 'groupIds': ['OG000'], 'statisticalMethod': 't-test, 1 sided', 'nonInferiorityType': 'SUPERIORITY'}, {'pValue': '0.088', 'groupIds': ['OG001'], 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'studyFirstSubmitQcDate': '2023-06-15', 'lastUpdatePostDateStruct': {'date': '2025-10-15', 'type': 'ESTIMATED'}, 'resultsFirstSubmitQcDate': '2025-09-26', 'studyFirstPostDateStruct': {'date': '2023-06-27', 'type': 'ACTUAL'}, 'resultsFirstPostDateStruct': {'date': '2025-10-15', 'type': 'ESTIMATED'}, 'primaryCompletionDateStruct': {'date': '2024-10-04', 'type': 'ACTUAL'}}, 'outcomesModule': {'primaryOutcomes': [{'measure': 'Changes in fMRI Signal', 'timeFrame': '1-2 hours', 'description': 'fMRI signal during learning will be assessed using connectivity, multivariate, and univariate approaches over 1-2 hour long learning period. Correlation between change in CA1-EC background connectivity and pair familiarity. rho represents the true correlation within the entire population, with values ranging from -1 to +1; values closer to +1 indicate a strong positive linear relationship, closer to -1 a strong negative one, and closer to 0 indicate no linear relationship.'}, {'measure': 'Statistical Learning', 'timeFrame': '1-2 hours', 'description': 'Online measures of statistical learning ( mean reaction time) based on item predictability during task for condition A, B or x.'}, {'measure': 'Retention of Statistical Learning', 'timeFrame': '1 hour', 'description': 'Offline measure of statistical learning assessed through familiarity tests the next day (comparison of accurate recognition of previously-studied pairs to chance, 50%)'}, {'measure': 'Episodic Memory', 'timeFrame': '1 hour', 'description': "Memory for individual items will be assessed through performance on old/new recognition tests the next day, quantified as hit rates and A' (non-parametric normalized ratio of hits to false alarms). Data presented here is the proportion of studied items attributed to the correct condition (A, B or X) minus the proportion of nonstudied items incorrectly attributed to that same condition."}], 'secondaryOutcomes': [{'measure': 'Cortisol Reactivity', 'timeFrame': '1-2 hours', 'description': 'Change in salivary cortisol levels following the SECPT/control procedure'}, {'measure': 'Alpha-amylase Reactivity', 'timeFrame': '1-2 hours', 'description': 'Change in salivary alpha-amylase levels following the SECPT/control procedure'}]}, 'oversightModule': {'oversightHasDmc': False, 'isFdaRegulatedDrug': False, 'isFdaRegulatedDevice': False}, 'conditionsModule': {'keywords': ['memory'], 'conditions': ['Stress', 'Learning, Spatial']}, 'descriptionModule': {'briefSummary': 'The purpose of this study is to investigate the neural mechanisms by which acute stress influences statistical learning and episodic encoding.', 'detailedDescription': 'This study aims to assess the neural and behavioral mechanisms by which acute stress modulates episodic encoding (which involves the trisynaptic pathway: entorhinal cortex, dentate gyrus, cornu ammonis \\[CA\\] 3, and CA 1) and statistical learning (monosynaptic pathway: entorhinal cortex, CA1) in humans.'}, 'eligibilityModule': {'sex': 'ALL', 'stdAges': ['ADULT'], 'maximumAge': '45 Years', 'minimumAge': '18 Years', 'healthyVolunteers': True, 'eligibilityCriteria': 'Inclusion Criteria:\n\n* 18-45 years old\n* Fluent in English\n* BMI 18-35\n\nExclusion Criteria:\n\n* Meeting current DSM-V criteria for any substance use disorder (except caffeine)\n* Having current significant medical conditions or psychiatric symptoms requiring medication\n* Current use of medications/drugs that interfere with physiological stress responses\n* Peri and post-menopausal women, pregnant or lactating women, and those with hysterectomies\n* Metal in body (for MRI safety) history will be assessed for female participants.'}, 'identificationModule': {'nctId': 'NCT05920161', 'briefTitle': 'Influence of Stress on Encoding and Prediction', 'organization': {'class': 'OTHER', 'fullName': 'Yale University'}, 'officialTitle': 'Neural Mechanisms of Stress Effects Across Hippocampal Encoding and Prediction', 'orgStudyIdInfo': {'id': '2000030825'}, 'secondaryIdInfos': [{'id': '1R21MH128740-01A1', 'link': 'https://reporter.nih.gov/quickSearch/1R21MH128740-01A1', 'type': 'NIH'}]}, 'armsInterventionsModule': {'armGroups': [{'type': 'EXPERIMENTAL', 'label': 'Acute Stress', 'description': 'Participants complete the socially evaluated cold pressor test (SECPT), a validated laboratory-based stress induction procedure involving submerging an arm in an ice bath', 'interventionNames': ['Behavioral: Socially Evaluated Cold Pressor Test']}, {'type': 'ACTIVE_COMPARATOR', 'label': 'No Stress', 'description': 'Participants complete a matched condition with no stress-related exposure involving submerging an arm in warm water', 'interventionNames': ['Behavioral: Control']}], 'interventions': [{'name': 'Socially Evaluated Cold Pressor Test', 'type': 'BEHAVIORAL', 'description': 'The SECPT is a brief validated laboratory-based stress induction containing both physical and social elements', 'armGroupLabels': ['Acute Stress']}, {'name': 'Control', 'type': 'BEHAVIORAL', 'description': 'This is matched to the SECPT but with warm instead of cold water', 'armGroupLabels': ['No Stress']}]}, 'contactsLocationsModule': {'locations': [{'zip': '06511', 'city': 'New Haven', 'state': 'Connecticut', 'country': 'United States', 'facility': 'Yale University', 'geoPoint': {'lat': 41.30815, 'lon': -72.92816}}], 'overallOfficials': [{'name': 'Elizabeth V Goldfarb, PhD', 'role': 'PRINCIPAL_INVESTIGATOR', 'affiliation': 'Yale University'}]}, 'ipdSharingStatementModule': {'ipdSharing': 'NO', 'description': 'Aggregate data will be shared on NIMH Data Archives'}, 'sponsorCollaboratorsModule': {'leadSponsor': {'name': 'Yale University', 'class': 'OTHER'}, 'collaborators': [{'name': 'National Institute of Mental Health (NIMH)', 'class': 'NIH'}], 'responsibleParty': {'type': 'SPONSOR'}}}}