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ClinicalTrials.gov public records Last synced Oct 25, 2026, 1:52 AM EDT

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Showing 433–456 of 1,883 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Impaired Cognition Clear all
Completed No phase listed Observational Accepts healthy volunteers

Velocardiofacial (VCFS; 22q11.2; DiGeorge) Syndrome Study

NCT00105274
View directory record Official record
Conditions
DiGeorge Syndrome, Velocardiofacial Syndrome, 22q11.2 Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 50 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2010
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 25, 2026, 1:52 AM EDT
Completed Phase 4 Interventional Results available

Genomic Outcomes of Metformin

NCT02986659
View directory record Official record
Conditions
Coronary Artery Disease, Mild Cognitive Impairment, Obesity, Abdominal, Hypertension
Interventions
Metformin, Placebo
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
65 Years to 79 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 18, 2023 · Synced Oct 25, 2026, 1:52 AM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate the Safety and Efficacy of BIIB104 in Participants With Cognitive Impairment Associated With Schizophrenia (CIAS)

NCT03745820
View directory record Official record
Conditions
Cognitive Impairment Associated With Schizophrenia
Interventions
BIIB104, Placebo
Drug · Other
Lead sponsor
Biogen
Industry
Eligibility
18 Years to 55 Years
Enrollment
195 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
37
States / cities
Bentonville, Arkansas • Culver City, California • Garden Grove, California + 31 more
Source: ClinicalTrials.gov public record
Updated Apr 18, 2023 · Synced Oct 25, 2026, 1:52 AM EDT
Recruiting No phase listed Observational

Passive Sensor Identification of Digital Biomarkers to Assess Effects of Orally Administered Nicotinamide Riboside

NCT05245903
View directory record Official record
Conditions
Alzheimer Disease, Dementia Alzheimers, Dementia, Cognitive Impairment, Mild Cognitive Impairment, Neurodegenerative Diseases, Neurocognitive Disorders, Neurocognitive Dysfunction, Cognitive Dysfunction, Mental Disorder
Interventions
Emerald Device Monitoring
Device
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 89 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 6, 2025 · Synced Oct 25, 2026, 1:52 AM EDT
Completed Phase 2 Interventional Results available

NeuroCognition After Carotid Recanalization

NCT04219774
View directory record Official record
Conditions
Cognition Disorder, Stroke, Occlusion Carotid
Interventions
Endovascular intervention, Aspirin and Clopidogrel (maximal medical Therapy)
Procedure · Drug
Lead sponsor
Duke University
Other
Eligibility
21 Years to 90 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
2
States / cities
Iowa City, Iowa • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated May 9, 2025 · Synced Oct 25, 2026, 1:52 AM EDT
Not listed Phase 1Phase 2 Interventional Accepts healthy volunteers

Behavioral and Physiological Effects of Visual Training

NCT00526942
View directory record Official record
Conditions
Healthy
Interventions
SAAGE-designed, visual memory-based cognitive training
Behavioral
Lead sponsor
Posit Science Corporation
Industry
Eligibility
60 Years and older
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
San Francisco Bay Area, California
Source: ClinicalTrials.gov public record
Updated Sep 11, 2007 · Synced Oct 25, 2026, 1:52 AM EDT
Not listed Not applicable Interventional

Computerized Cognitive Rehabilitation in MS Patients

NCT03729713
View directory record Official record
Conditions
Multiple Sclerosis, Cognitive Impairment
Interventions
Computerized cognitive rehabilitation, Sham placebo
Other
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 17, 2022 · Synced Oct 25, 2026, 1:52 AM EDT
Completed Not applicable Interventional

Taking Brain Monitoring to the Next Level

NCT04246320
View directory record Official record
Conditions
Postoperative Cognitive Dysfunction, Postoperative Delirium, Obstructive Sleep Apnea
Interventions
Goal directed therapy (GDT)
Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
45 Years to 75 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 19, 2023 · Synced Oct 25, 2026, 1:52 AM EDT
Completed Phase 3 Interventional

Donepezil and Vitamin E to Prevent Side Effects Caused By Radiation Therapy to the Head in Patients Receiving Treatment for Small Cell Lung Cancer

NCT00006349
View directory record Official record
Conditions
Cognitive/Functional Effects, Delirium, Depression, Lung Cancer, Radiation Toxicity
Interventions
vitamin E, donepezil hydrochloride, placebo
Dietary Supplement · Drug · Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2007
U.S. locations
15
States / cities
Scottsdale, Arizona • Jacksonville, Florida • Peoria, Illinois + 12 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2016 · Synced Oct 25, 2026, 1:52 AM EDT
Terminated Phase 3 Interventional Results available

Open-Label Study of Leuco-methylthioninium Bis(Hydromethanesulfonate) (LMTM) in Subjects With Alzheimer's Disease or Behavioral Variant Frontotemporal Dementia (bvFTD)

NCT02245568
View directory record Official record
Conditions
Alzheimer's Disease, Behavioral Variant Frontotemporal Dementia
Interventions
LMTM
Drug
Lead sponsor
TauRx Therapeutics Ltd
Industry
Eligibility
Not listed
Enrollment
913 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
57
States / cities
Phoenix, Arizona • Fountain Valley, California • Laguna Hills, California + 48 more
Source: ClinicalTrials.gov public record
Updated May 24, 2023 · Synced Oct 25, 2026, 1:52 AM EDT
Completed Phase 3 Interventional

VITAL - VITamins to Slow ALzheimer's Disease (Homocysteine Study)

NCT00056225
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
Folate, Vitamin B6, Vitamin B12
Drug
Lead sponsor
National Institute on Aging (NIA)
NIH
Eligibility
55 Years and older
Enrollment
340 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
38
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Sun City, Arizona + 29 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2009 · Synced Oct 25, 2026, 1:52 AM EDT
Completed No phase listed Observational

CogMS - A Real-world Study Into Cognitive Impairment in People With Multiple Sclerosis

NCT05671055
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Custom study version of icompanion app
Other
Lead sponsor
icometrix
Industry
Eligibility
18 Years to 65 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
5
States / cities
Aurora, Colorado • Fort Collins, Colorado • Buffalo, New York + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 7, 2023 · Synced Oct 25, 2026, 1:52 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

The Effect of Acute Exercise on Cardiac Autonomic, Cerebrovascular, and Cognitive Function in Spinal Cord Injury

NCT05542238
View directory record Official record
Conditions
Spinal Cord Injuries, Cardiovascular Abnormalities, Cerebrovascular Disease; Sequelae, Cognitive Impairment
Interventions
One bout of moderate-intensity sub-maximal aerobic exercise
Behavioral
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
18 Years to 55 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Mar 6, 2025 · Synced Oct 25, 2026, 1:52 AM EDT
Active, not recruiting Not applicable Interventional

Curcumin in Kidney Transplant Recipients

NCT03935958
View directory record Official record
Conditions
Disorder Related to Renal Transplantation
Interventions
Curcumin, Placebo
Dietary Supplement · Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Oct 25, 2026, 1:52 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Lipoic Acid and Omega-3 Fatty Acids for Cognitive Impairment in Multiple Sclerosis

NCT02133664
View directory record Official record
Conditions
Multiple Sclerosis, Cognition
Interventions
lipoic acid and omega-3 fatty acids, Placebo
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 65 Years
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jun 2, 2017 · Synced Oct 25, 2026, 1:52 AM EDT
Completed Phase 4 Interventional Results available

Effects of Riluzole on CNS Glutamate and Fatigue in Breast Cancer Survivors With High Inflammation

NCT02796755
View directory record Official record
Conditions
Inflammation, Fatigue
Interventions
Riluzole, Placebo
Drug
Lead sponsor
Emory University
Other
Eligibility
21 Years to 65 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 14, 2021 · Synced Oct 25, 2026, 1:52 AM EDT
Not listed No phase listed Observational

Evidence Amyloid Scan EEG Study

NCT03644043
View directory record Official record
Conditions
Alzheimer Disease, Dementia Frontal, Mild Cognitive Impairment
Interventions
EEG scan
Device
Lead sponsor
Metabolic Therapy Inc.
Other
Eligibility
60 Years and older
Enrollment
2,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 23, 2018 · Synced Oct 25, 2026, 1:52 AM EDT
Active, not recruiting No phase listed Observational

A Study of Health Care Use and Costs in Participants With Early Stage Alzheimer's Disease (AD)

NCT02951598
View directory record Official record
Conditions
Alzheimer Disease, Mild Cognitive Impairment
Interventions
Florbetapir F 18 PET Scan
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
55 Years to 85 Years
Enrollment
1,400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
77
States / cities
Anaheim, California • Imperial, California • Irvine, California + 59 more
Source: ClinicalTrials.gov public record
Updated Oct 24, 2025 · Synced Oct 25, 2026, 1:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Low Intensity Focused Ultrasound for Learning and Memory and Emotion Regulation

NCT03717922
View directory record Official record
Conditions
Brain Diseases, Memory Disorders, Learning Disabilities, Cognitive Impairment
Interventions
Low Intensity Focused Ultrasound Pulsation to Amygdala, Low Intensity Focused Ultrasound Pulsation to Entorhinal Cortex
Device
Lead sponsor
University of California, Los Angeles
Other
Eligibility
35 Years to 90 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 20, 2024 · Synced Oct 25, 2026, 1:52 AM EDT
Active, not recruiting No phase listed Observational Accepts healthy volunteers

Trifecta Research Study

NCT07717866
View directory record Official record
Conditions
PTSD - Post Traumatic Stress Disorder, Cognitive Dysfunction, Brain Injury, Depression - Major Depressive Disorder, Suicidal Ideation
Interventions
Magnetic e-Resonance Therapy (MeRT), Ibogaine Hydrochloride with Magnesium Sulfate, 5-methoxy-N,N-dimethyltryptamine, Physiological Supplementation
Device · Drug
Lead sponsor
Axial Therapeutic Research
Industry
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Northridge, California
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Oct 25, 2026, 1:52 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Auditory Stimulation of Slow Wave Sleep and Memory in Mild Cognitive Impairment and Older Adults

NCT02608840
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
Auditory stimulation during sleep, Sham Intervention
Other
Lead sponsor
Northwestern University
Other
Eligibility
60 Years and older
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 6, 2019 · Synced Oct 25, 2026, 1:52 AM EDT
Terminated Phase 3 Interventional Results available

Evaluating The Efficacy And Safety Of Donepezil Hydrochloride (Aricept) In The Treatment Of The Cognitive Dysfunction Exhibited By Children With Down Syndrome, Aged 6 To 10

NCT00754013
View directory record Official record
Conditions
Down Syndrome, Cognitive Dysfunction
Interventions
Aricept (Donepezil hydrochloride), Placebo
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
6 Years to 10 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
2
States / cities
San Antonio, Texas • Herndon, Virginia
Source: ClinicalTrials.gov public record
Updated Jan 28, 2020 · Synced Oct 25, 2026, 1:52 AM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

A Novel Computer-Based Functional Skills Assessment and Training Program

NCT04679441
View directory record Official record
Conditions
Mild Cognitive Impairment, Healthy Aging
Interventions
The Computerized Functional Skills Assessment and Training Program, Brain HQ Double Decision
Device
Lead sponsor
i-Function, Inc.
Industry
Eligibility
60 Years to 100 Years
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
2
States / cities
Miami, Florida • New York, New York
Source: ClinicalTrials.gov public record
Updated May 8, 2023 · Synced Oct 25, 2026, 1:52 AM EDT
Recruiting Not applicable Interventional

Multicontext Approach for Cognitive Function in Parkinson Disease

NCT07190404
View directory record Official record
Conditions
PARKINSON DISEASE (Disorder)
Interventions
A metacognitive strategy for cognitive rehabilitation called the Multicontext Approach., Cognitive (Process) Training, MC Approach Booster Session
Behavioral
Lead sponsor
Washington University School of Medicine
Other
Eligibility
50 Years and older
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 14, 2026 · Synced Oct 25, 2026, 1:52 AM EDT