Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 23, 2026, 3:34 AM EDT

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Showing 553–576 of 1,870 matching trials from the live ClinicalTrials.gov search.
Completed Early Phase 1 Interventional Accepts healthy volunteers

Effects of Melatonin on Sleep, Ventilatory Control and Cognition at Altitude.

NCT03368352
Conditions
Altitude Hypoxia, Ventilation, Sleep, Oxidative Stress, Neurocognitive Dysfunction
Interventions
Melatonin, Hypoxia
Dietary Supplement · Other
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
San Diego, California
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Clinical Evaluation of Florbetapir F 18 (18F-AV-45)

NCT01518374
Conditions
Alzheimer Disease, Mild Cognitive Impairment, Neurodegenerative Diseases
Interventions
Florbetapir F 18
Drug
Lead sponsor
Avid Radiopharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
1,768 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2017
U.S. locations
26
States / cities
Phoenix, Arizona • Sun City, Arizona • Davis, California + 19 more
Conditions
Neurocognitive Disorders, Postoperative Cognitive Dysfunction
Interventions
Brain Imaging, Cognitive Testing, Blood Biomarkers
Diagnostic Test
Lead sponsor
University of California, Los Angeles
Other
Eligibility
65 Years to 75 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Los Angeles, California
Completed Not applicable Interventional Accepts healthy volunteers

Transcranial Magnetic Stimulation for Apathy in Mild Cognitive Impairment

NCT03590327
Conditions
Apathy, Mild Cognitive Impairment, Transcranial Magnetic Stimulation, Loneliness, COVID, Neuropsychiatric Symptoms
Interventions
Transcranial Magnetic Stimulation
Device
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
55 Years and older
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2024
U.S. locations
1
States / cities
Little Rock, Arkansas
Conditions
Mild Cognitive Impairment
Interventions
Olfactory Memory Training, Visual Memory Training
Behavioral
Lead sponsor
Jeffrey Motter
Other
Eligibility
55 Years to 89 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
New York, New York
Conditions
Alzheimer's Disease
Interventions
Elenbecestat, Placebo
Drug
Lead sponsor
Eisai Co., Ltd.
Industry
Eligibility
50 Years to 85 Years
Enrollment
2,212 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
88
States / cities
Chandler, Arizona • Colton, California • Costa Mesa, California + 68 more
Conditions
PTSD, Cognitive Performance
Interventions
Cognitive Processing Therapy, Eye-Movement Desensitization and Reprocessing
Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Fayetteville, North Carolina
Conditions
Mild Cognitive Impairment, Accidental Falls, Aging
Interventions
dual-task tai ji quan, standard tai ji quan, stretching
Behavioral
Lead sponsor
Oregon Research Institute
Other
Eligibility
65 Years to 95 Years
Enrollment
336 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Springfield, Oregon
Conditions
Cognitive Impairment
Interventions
cognitive testing
Other
Lead sponsor
University of Nebraska
Other
Eligibility
55 Years to 75 Years
Enrollment
152 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Omaha, Nebraska
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Pioglitazone Or Exercise to Treat Mild Cognitive Impairment (MCI)

NCT00736996
Conditions
Mild Cognitive Impairment
Interventions
Pioglitazone, Placebo, Endurance Exercise Training
Drug · Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
55 Years and older
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
1
States / cities
Denver, Colorado
Conditions
Cognitive Impairment
Interventions
Cognitive Rehabilitation, Brain Health Education Program
Behavioral
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
New York, New York
Completed No phase listed Observational Accepts healthy volunteers

Hypertension, Brain Clearance, and Markers of Neurodegeneration

NCT05785871
Conditions
Mild Cognitive Impairment, Hypertension
Interventions
Not listed
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
60 Years to 80 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
New York, New York
Conditions
Alzheimer Disease, Healthy Volunteers
Interventions
TAK-071, Donepezil, TAK-071 Placebo, Donepezil Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 90 Years
Enrollment
179 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Glendale, California
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Gamma-tACS on Memory and Sleep

NCT05907707
Conditions
Transcranial Alternating Current Stimulation, Aging, Cognitive Decline, Memory, Sleep
Interventions
Gamma transcranial alternating current stimulation, Control transcranial alternating current stimulation, EEG headband, Actigraphy wristband
Device
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
50 Years and older
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Recruiting No phase listed Observational Accepts healthy volunteers

Study to Understand Novel Biomarkers in Researching Dementia

NCT06547099
Conditions
Alzheimer Disease, Mild Cognitive Impairment, Dementia
Interventions
Clinical tau PET, Clinical amyloid test, Research blood collection, Cognitive assessments
Diagnostic Test · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
60 Years and older
Enrollment
1,800 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
St Louis, Missouri
Completed Not applicable Interventional Accepts healthy volunteers Results available

Treatment Response of Geriatric Depression

NCT00754936
Conditions
Depression
Interventions
Escitalopram
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
60 Years to 90 Years
Enrollment
106 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2015
U.S. locations
1
States / cities
White Plains, New York
Conditions
Mild Cognitive Impairment, Alzheimer's Disease, Alzheimer's Disease Related Disorders
Interventions
Not listed
Lead sponsor
Pamlab, Inc.
Industry
Eligibility
18 Years and older
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Newport Beach, California
Conditions
Mild Cognitive Impairment (MCI), Cognitive Training
Interventions
Cognitive Training
Other
Lead sponsor
Columbia University
Other
Eligibility
55 Years to 89 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
4
States / cities
Miami, Florida • New York, New York • Durham, North Carolina + 1 more
Conditions
Mild Cognitive Impairment (MCI), Dementia
Interventions
Insole and ankle device
Device
Lead sponsor
HealthPartners Institute
Other
Eligibility
55 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Saint Paul, Minnesota
Conditions
Alzheimer Disease, Early Onset, Mild Cognitive Impairment, Moderate Dementia
Interventions
Emtriva Capsule, Placebo
Drug
Lead sponsor
Butler Hospital
Other
Eligibility
50 Years to 85 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
2
States / cities
Los Angeles, California • Providence, Rhode Island
Conditions
Cardiac Surgery, Post-operative Cognitive Dysfunction, Fever
Interventions
Rapr Rounds Hyper/Hypothermia Wraps, Acetaminophen
Device · Drug
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
20 Years to 89 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Richmond, Virginia
Conditions
Parkinson's Disease, Mild Cognitive Impairment
Interventions
Brain Fitness, InSight, Active Control
Behavioral
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
21 Years to 90 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Richmond, Virginia
Conditions
Subjective Cognitive Decline (SCD), Healthy Subjects
Interventions
Experimental -- 16.67 Hz Visual Occlusion, Control - 1Hz Visual Occlusion
Behavioral
Lead sponsor
University of Florida
Other
Eligibility
65 Years to 89 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Gainesville, Florida
Completed Not applicable Interventional Accepts healthy volunteers Results available

Treatment With Namenda in Women at Risk for Cognitive Decline

NCT00242632
Conditions
Dementia
Interventions
Namenda
Drug
Lead sponsor
Stanford University
Other
Eligibility
50 Years to 65 Years · Female only
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
Stanford, California