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Showing 1–24 of 1,051 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Cognitive Functioning Clear all
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

ACTIVE: Advanced Cognitive Training for Independent and Vital Elderly

NCT00298558
View directory record Official record
Conditions
Aging, Healthy
Interventions
Cognitive Training
Behavioral
Lead sponsor
Carelon Research
Other
Eligibility
65 Years and older
Enrollment
2,832 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1998 – 2010
U.S. locations
7
States / cities
Birmingham, Alabama • Indianapolis, Indiana • Baltimore, Maryland + 4 more
Source: ClinicalTrials.gov public record
Updated Apr 15, 2014 · Synced Sep 3, 2026, 1:27 AM EDT
Completed Early Phase 1 Interventional Results available

Donepezil in Treating Young Patients With Primary Brain Tumors Previously Treated With Radiation Therapy to the Brain

NCT00452868
View directory record Official record
Conditions
Brain and Central Nervous System Tumors, Cognitive/Functional Effects, Long-term Effects Secondary to Cancer Therapy in Children, Neurotoxicity, Psychosocial Effects of Cancer and Its Treatment, Radiation Toxicity
Interventions
Donepezil
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
8 Years to 17 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
2
States / cities
Boston, Massachusetts • Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 6, 2018 · Synced Sep 3, 2026, 1:27 AM EDT
Completed No phase listed Observational

Post-operative Cognitive Function Following Pelvic Floor Surgery

NCT04554550
View directory record Official record
Conditions
Pelvic Organ Prolapse
Interventions
Not listed
Lead sponsor
University of Pennsylvania
Other
Eligibility
60 Years and older · Female only
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 24, 2022 · Synced Sep 3, 2026, 1:27 AM EDT
Completed Not applicable Interventional

Mindful Movement Program in Improving Quality of Life in Older Female Breast Cancer Survivors

NCT00903474
View directory record Official record
Conditions
Anxiety Disorder, Breast Cancer, Cancer Survivor, Cognitive/Functional Effects, Depression, Psychosocial Effects of Cancer and Its Treatment
Interventions
questionnaire administration, study of socioeconomic and demographic variables, CAM exercise therapy, psychosocial assessment and care, quality-of-life assessment, stress management therapy
Other · Procedure
Lead sponsor
City of Hope Medical Center
Other
Eligibility
50 Years and older · Female only
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Jun 7, 2015 · Synced Sep 3, 2026, 1:27 AM EDT
Completed Phase 4 Interventional Results available

Perioperative Cognitive Function - Dexmedetomidine and Cognitive Reserve

NCT00561678
View directory record Official record
Conditions
Postoperative Delirium, PD, Postoperative Cognitive Dysfunction, POCD
Interventions
Precedex (Dexmedetomidine), Placebo
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
68 Years and older
Enrollment
404 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
10
States / cities
Miami, Florida • Baltimore, Maryland • College Park, Maryland + 7 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2018 · Synced Sep 3, 2026, 1:27 AM EDT
Completed Phase 2 Interventional Results available

Gabapentin Treatment of Cannabis Dependence

NCT00974376
View directory record Official record
Conditions
Cannabis Dependence, Cannabis Withdrawal, Cognitive Deficits
Interventions
gabapentin 1200mg/day, Placebo, Manual-guided behavioral counseling
Drug · Behavioral
Lead sponsor
The Scripps Research Institute
Other
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2016
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 5, 2017 · Synced Sep 3, 2026, 1:27 AM EDT
Completed Not applicable Interventional Results available

Exercise Training Effects on Cognition and Brain Function in Multiple Sclerosis: Project EXACT

NCT03677440
View directory record Official record
Conditions
Multiple Sclerosis, Cognitive Impairment
Interventions
Treadmill Walking Exercise Training, Stretching-and-Toning Exercise Training
Behavioral
Lead sponsor
Kessler Foundation
Other
Eligibility
18 Years to 65 Years
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
West Orange, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 4, 2025 · Synced Sep 3, 2026, 1:27 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dietary Exchanges With Avocado and Mango in Pre-diabetes

NCT05353790
View directory record Official record
Conditions
Pre Diabetes, Vascular Stiffness, Vascular Dilation, Cognitive Change, Retinal Vascular
Interventions
Meals + snacks: control, Meals + snacks: Avocado mango
Other
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
25 Years to 70 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 14, 2026 · Synced Sep 3, 2026, 1:27 AM EDT
Completed Not applicable Interventional

Memory Improvement With Docosahexaenoic Acid Study (MIDAS)

NCT00278135
View directory record Official record
Conditions
Age-Related Cognitive Decline, Age-Related Memory Disorders
Interventions
DHA (nutritional supplement) or placebo
Dietary Supplement
Lead sponsor
dsm-firmenich Switzerland AG
Industry
Eligibility
55 Years and older
Enrollment
485 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
14
States / cities
Mesa, Arizona • San Diego, California • Vista, California + 11 more
Source: ClinicalTrials.gov public record
Updated May 18, 2014 · Synced Sep 3, 2026, 1:27 AM EDT
Completed No phase listed Observational

L-5-HTP-Related EMS

NCT00001918
View directory record Official record
Conditions
Eosinophilia-Myalgia Syndrome
Interventions
Not listed
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 3, 2026, 1:27 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

CREST: Samphire Guided Care Program on Wellbeing, Work Productivity, and Quality of Life

NCT07679074
View directory record Official record
Conditions
Premenstrual Syndrome, Premenstrual Dysphoric Disorder, Dysmenorrhea, Endometriosis, Perimenopause, Menopause, Pelvic Pain
Interventions
Lutea Transcranial Direct Current Stimulation (tDCS) Device, Samphire Guided Care Program
Device · Behavioral
Lead sponsor
Samphire Group, Inc.
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 30, 2026 · Synced Sep 3, 2026, 1:27 AM EDT
Not listed Not applicable Interventional

Comparative Effectiveness of CET vs. SST in SMI (Serious Mental Illness)

NCT04321759
View directory record Official record
Conditions
Schizophrenia and Related Disorders
Interventions
Cognitive Enhancement Therapy, Social Skills Training
Behavioral
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
378 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
5
States / cities
Hartford, Connecticut • Portland, Maine • Boston, Massachusetts + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2023 · Synced Sep 3, 2026, 1:27 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

The Activity Intervention for Chemobrain

NCT00495703
View directory record Official record
Conditions
Cancer, Chemotherapy, Cognitive Impairment
Interventions
Exercise, Usual Care
Behavioral
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years and older
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 3, 2017 · Synced Sep 3, 2026, 1:27 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Magnetic Resonance Imaging Studies of Motor and Thought Processes

NCT00001361
View directory record Official record
Conditions
Cerebrovascular Disorder, Healthy, Movement Disorder, Nervous System Disease, Spinal Cord Injury
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
610 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1992 – 2002
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 3, 2026, 1:27 AM EDT
Recruiting Not applicable Interventional

Psychotherapy Effects on Reward Processing in PTSD

NCT06096740
View directory record Official record
Conditions
Post Traumatic Stress Disorder, Diminished Pleasure, Anhedonia, PTSD, Chronic PTSD, Chronic Post-Traumatic Stress Disorder
Interventions
Cognitive Processing Therapy
Behavioral
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Sep 3, 2026, 1:27 AM EDT
Completed No phase listed Observational

Apolipoprotein E (ApoE) and Metabolism

NCT03109561
View directory record Official record
Conditions
Cognitive Function, Healthy
Interventions
Resting State Indirect Calorimetry, ApoE, Metabolism, Cognitive Challenge
Other · Genetic · Diagnostic Test
Lead sponsor
Lance Johnson
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Timeline
2018 – 2020
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jul 22, 2020 · Synced Sep 3, 2026, 1:27 AM EDT
Completed No phase listed Observational Results available

Asymptomatic Carotid Stenosis: Cognitive Function and Plaque Correlates

NCT01353196
View directory record Official record
Conditions
Cognitive Manifestations
Interventions
Not listed
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2018
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 23, 2019 · Synced Sep 3, 2026, 1:27 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

The Impact of Pancreatic Islet Cell Allotransplantation on Cognitive Function in Type 1 Diabetes Mellitus

NCT00590876
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Not listed
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
2
States / cities
New Haven, Connecticut • Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 26, 2011 · Synced Sep 3, 2026, 1:27 AM EDT
Completed Not applicable Interventional

Metabolism of Low Carbohydrate and Ketogenic Diet

NCT05071287
View directory record Official record
Conditions
Diabetic Kidney Disease, Cognitive Function, Weight Loss, Diabetic Control, Type2 Diabetes
Interventions
mHealth + low-fat diet, mHealth + low-carb/ketogenic diet
Other
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
2
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Feb 20, 2025 · Synced Sep 3, 2026, 1:27 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Longitudinal Examination of Aging With a Spinal Cord Injury: Cardiovascular, Cerebrovascular and Cognitive Consequences

NCT03023163
View directory record Official record
Conditions
Spinal Cord Injury
Interventions
Longitudinal
Other
Lead sponsor
James J. Peters Veterans Affairs Medical Center
Federal
Eligibility
28 Years to 75 Years
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2022
U.S. locations
1
States / cities
West Orange, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 25, 2023 · Synced Sep 3, 2026, 1:27 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Effects of a Breakfast and Snack on Cognitive Function in Preadolescents

NCT01592487
View directory record Official record
Conditions
Brain Function
Interventions
Not listed
Lead sponsor
University of Arkansas
Other
Eligibility
9 Years to 11 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Feb 11, 2014 · Synced Sep 3, 2026, 1:27 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Investigating the Cognitive and Brain Health Benefits of Lean Pork Consumption

NCT07031076
View directory record Official record
Conditions
Dietary Intervention, Dietary Proteins, Dietary Assessment, Older Adults (65 Years and Older), Cognitive Ability, General
Interventions
Ready-to-eat lean pork in frozen, 5-oz packages
Dietary Supplement
Lead sponsor
University of Nebraska Lincoln
Other
Eligibility
65 Years to 75 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Dec 25, 2025 · Synced Sep 3, 2026, 1:27 AM EDT
Completed Phase 2 Interventional Results available

Randomized, Placebo Controlled Study Of The Efficacy And Safety Of PF-02545920 In Subjects With Huntington's Disease

NCT02197130
View directory record Official record
Conditions
Huntington's Disease
Interventions
PF-02545920, Placebo
Drug · Other
Lead sponsor
Pfizer
Industry
Eligibility
30 Years to 65 Years
Enrollment
272 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
22
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 12 more
Source: ClinicalTrials.gov public record
Updated Nov 16, 2017 · Synced Sep 3, 2026, 1:27 AM EDT
Completed Phase 2 Interventional Results available

Safety and Effectiveness Study of Intranasal Insulin Glulisine on Cognitive and Memory in Mild-Mod AD Patients.

NCT01436045
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
Insulin glulisine, Saline
Drug
Lead sponsor
HealthPartners Institute
Other
Eligibility
65 Years to 85 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 18, 2015 · Synced Sep 3, 2026, 1:27 AM EDT