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ClinicalTrials.gov public records Last synced Oct 21, 2026, 5:06 PM EDT

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Showing 1–24 of 62 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Reaction Time Clear all
Recruiting Not applicable Interventional Accepts healthy volunteers

Vagus Nerve Stimulation for Reaction Time

NCT07528742
View directory record Official record
Conditions
Healthy Subjects (HS)
Interventions
vagus nerve stimulation
Device
Lead sponsor
Youngstown State University
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Youngstown, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Age on Latanoprost 0.005% in Patients With Glaucoma

NCT00224289
View directory record Official record
Conditions
Glaucoma
Interventions
Latanoprost 0.005%
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 10, 2012 · Synced Oct 21, 2026, 5:06 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

Use of Modafinil in the Treatment of Tinnitus

NCT00591019
View directory record Official record
Conditions
Tinnitus
Interventions
Modafinil, Placebo
Drug · Other
Lead sponsor
University of Arkansas
Other
Eligibility
20 Years to 99 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Oct 8, 2015 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Influence of Spinal Manipulative Therapy Upon Stroop Task Performance

NCT00335426
View directory record Official record
Conditions
Motor Response Time
Interventions
Spinal manipulative therapy
Procedure
Lead sponsor
Logan College of Chiropractic
Other
Eligibility
18 Years to 35 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Chesterfield, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 1, 2009 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Babesia Testing in Blood Donors

NCT01528449
View directory record Official record
Conditions
Transfusion Transmitted Babesiosis
Interventions
B.microti diagnostic blood tests
Biological
Lead sponsor
Imugen
Industry
Eligibility
16 Years and older
Enrollment
90,116 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Norwood, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 12, 2017 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Acute Effects of Onnit Alpha Brain on Cognition and Mood States

NCT07495592
View directory record Official record
Conditions
Cognitive, Mood and Cognitive Performance, Sleep Deprivation, Executive Function (Cognition), Fatigue
Interventions
Alpha Brain proprietary cognitive dietary supplement, Alpha Brain 2.0 proprietary cognitive dietary supplement, Controlled Placebo
Dietary Supplement
Lead sponsor
Applied Science & Performance Institute
Industry
Eligibility
20 Years to 59 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jul 8, 2026 · Synced Oct 21, 2026, 5:06 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Effect of Transcranial Magnetic Stimulation on Free Will

NCT00029653
View directory record Official record
Conditions
Healthy
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
Not listed
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

The Effects of a Combination of TeaCrine®, Dynamine, and Caffeine in Law Enforcement

NCT03937687
View directory record Official record
Conditions
Caffeine, Teacrine, and Dynamine: Effects on Performance
Interventions
Caffeine+TeaCrine+Dynamine, Placebo, Caffeine
Drug
Lead sponsor
University of South Carolina
Other
Eligibility
18 Years to 63 Years · Male only
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
2
States / cities
New Brunswick, New Jersey • Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Sep 30, 2021 · Synced Oct 21, 2026, 5:06 PM EDT
Withdrawn Early Phase 1 Interventional Accepts healthy volunteers

tFUS to Enhance Alertness and Performance

NCT06461221
View directory record Official record
Conditions
Reaction Time, Alertness
Interventions
Transcranial Focused Ultrasound
Device
Lead sponsor
Medical University of South Carolina
Other
Eligibility
22 Years to 55 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Sep 8, 2025 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Consumption of 4D Dietary Supplement on Perceptual-Cognitive and Visual-Motor Performance

NCT04988919
View directory record Official record
Conditions
Dietary Supplementation
Interventions
4D, placebo
Dietary Supplement
Lead sponsor
University of Central Florida
Other
Eligibility
18 Years to 40 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Oct 8, 2021 · Synced Oct 21, 2026, 5:06 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Language Control Across Modalities

NCT07226921
View directory record Official record
Conditions
Healthy
Interventions
Predictability, language context
Behavioral
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 65 Years
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2030
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Nov 12, 2025 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Not applicable Interventional

The Effect of a Reduced Noise Environment on the Response Time of the Anesthesia Provider

NCT03507855
View directory record Official record
Conditions
Noise Exposure
Interventions
Reduced noise, Normal
Other
Lead sponsor
Joshua Uffman
Other
Eligibility
Not listed
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 8, 2024 · Synced Oct 21, 2026, 5:06 PM EDT
Completed No phase listed Observational

Investigating Reaction Time Among Children Who Snore

NCT02053012
View directory record Official record
Conditions
Snoring
Interventions
PVT-192
Device
Lead sponsor
Vidya Raman
Other
Eligibility
6 Years to 18 Years
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 10, 2018 · Synced Oct 21, 2026, 5:06 PM EDT
Completed No phase listed Observational

Review of Molecular Profiling-Real Time Polymerase Chain Reaction (Rt-Pcr) in Unknown Primary Cancer

NCT00876408
View directory record Official record
Conditions
Unknown Primary Cancer
Interventions
Not listed
Lead sponsor
SCRI Development Innovations, LLC
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 4, 2013 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Acute Effects of a Dietary Supplement on Cognitive Performance in Highly Trained Athletes.

NCT05926050
View directory record Official record
Conditions
Reaction Time
Interventions
Treatment (CopaPrime+ (USANA Health Sciences), Placebo
Dietary Supplement · Other
Lead sponsor
USANA Health Sciences
Industry
Eligibility
18 Years to 30 Years
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Park City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 3, 2023 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Evaluation of Safety, Tolerability and Immune Responses of Ebola-S and Marburg Vaccines in Healthy Adults

NCT04723602
View directory record Official record
Conditions
Ebola Virus Disease, Marburg Virus Disease
Interventions
cAd3-Marburg, cAd3-EBO-S
Biological
Lead sponsor
Albert B. Sabin Vaccine Institute
Other
Eligibility
18 Years to 50 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Aug 3, 2022 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of A-GPC on Reaction Time and Cognitive Function

NCT03903250
View directory record Official record
Conditions
Cognitive Change, Reaction Time
Interventions
A-GPC, Sugar
Dietary Supplement
Lead sponsor
University of Mary Hardin-Baylor
Other
Eligibility
18 Years to 35 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Belton, Texas
Source: ClinicalTrials.gov public record
Updated Nov 12, 2020 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Not applicable Interventional

mHealth Behavior Study

NCT06624514
View directory record Official record
Conditions
Alcohol Consumption, Condom Use
Interventions
Training Group, Sham Training Group
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 25 Years · Female only
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 19, 2026 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Not applicable Interventional Results available

Clinical Utility of a PCR Compared to Culture and Sensitivity Testing for the Management of cUTI in Adults.

NCT06996301
View directory record Official record
Conditions
Urinary Tract Infection Complicated, Urinary Tract Infection (cUTI), Urinary Tract Infection (Diagnosis)
Interventions
Treatment guided by the PCR results, Treatment guided by the C&S results
Diagnostic Test
Lead sponsor
Doc Lab Inc
Industry
Eligibility
18 Years and older
Enrollment
773 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
6
States / cities
San Jose, California • Albany, Georgia • Evans, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Not applicable Interventional Results available

Multiplexing Prism Fitting for Field Expansion of Monocular Vision

NCT06027216
View directory record Official record
Conditions
One Eye Blindness, Blind Left Eye, Blind Right Eye
Interventions
Multiplexing Prism
Device
Lead sponsor
Massachusetts Eye and Ear Infirmary
Other
Eligibility
16 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 8, 2025 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Acute and Residual Effects of Caffeinated Beer

NCT00515294
View directory record Official record
Conditions
Neurobehavioral Manifestations, Drug Related Sleep Disturbance, Alcohol Intoxication
Interventions
Caffeinated Alcoholic Beer, Non-Caffeinated Alcoholic Beer, Caffeinated Non-Alcoholic Beer, Non-Caffeinated, Non-Alcoholic Beer
Drug · Other
Lead sponsor
Boston University
Other
Eligibility
21 Years to 30 Years
Enrollment
154 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 28, 2017 · Synced Oct 21, 2026, 5:06 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of an Exercise Program on Reaction Time and Mouse Accuracy in Recreational Video Game Players

NCT06512675
View directory record Official record
Conditions
Quality of Life
Interventions
Resistance combined with cardiovascular training
Other
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 1, 2026 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Does Overpractice Improve Motor Learning?

NCT02898701
View directory record Official record
Conditions
Aging
Interventions
Motor Practice of a Standing Serial Reaction Time Task
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 95 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 15, 2021 · Synced Oct 21, 2026, 5:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Theanine and Caffeine on Neurophysiology of Attention

NCT02770105
View directory record Official record
Conditions
L-theanine
Interventions
Theanine, Caffeine, Theanine-Caffeine Combination, Placebo
Other
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years to 60 Years · Male only
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Sep 2, 2016 · Synced Oct 21, 2026, 5:06 PM EDT