Clinical trials: Visual Suppression
Non-visual Photoreception
Investigating the Effects of Evening Light Exposure on Melatonin Suppression, Alertness and Nocturnal Sleep
The timing and quality of sleep is governed by environmental and physiologic factors. Environmental factors, especially ambient lighting can impact the circadian system and alter the timing and structure of sleep.
- Trial name
- NCT01586039
- Testing
- Visible light
- Where
- United States
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Diplopia, Binocular Vision Suppression
Understanding Visual Confusion Using Stereoscopic Displays
In this research study we want to test how people understand a visual scene when the same image is presented to both the eyes, but portions of these images are altered in terms of contrast, depth or in some cases motion.
- Conditions
- Diplopia, Binocular Vision Suppression, Binocular; Fusion, With Defective Stereopsis, Monocular Diplopia
- Trial name
- NCT04957745
- Testing
- Binocular visual confusion (unilateral opaque), Unilateral monocular visual confusion (unilateral see-through), Bilateral monocular visual confusion (bilateral see-through)
- Where
- United States
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- Massachusetts Eye and Ear Infirmary
Overweight, Obesity
A Short-Term Appetite Suppression Trial Using Appethyl™: The Pizza
The purpose of the study is to determine whether Appethyl™, made from spinach, will reduce appetite and hunger given on the same day of testing.
- Trial name
- Pizza (NCT01919814)
- Testing
- Appethyl™
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Pennington Biomedical Research Center
Plaque Psoriasis
An Open Label, Safety Study to Assess the Potential for Adrenal Suppression
An Open Label, Safety Study to Assess the Potential for Adrenal Suppression Following Treatment with DSXS (Taro Pharmaceuticals U.S.A., Inc.) in Patients with Plaque Psoriasis
- Trial name
- NCT02932878
- Testing
- DSXS topical
- Where
- United States
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Sun Pharmaceutical Industries, Inc.
Healthy
Evaluate the Pharmacokinetics and Gonadotropin Suppression of Nestorone®-Testosterone (NES/T) Combination Gel in Men
This is a prospective, randomized, double-blinded, two-center trial to evaluate the gonadotropin suppressive activity of transdermal treatment with a combined NES/T gel, or T gel alone, for 28 days.
- Trial name
- NCT02432261
- Testing
- Nestorone® /testosterone gel, Testosterone only gel
- Where
- 2 sites in United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Kimberly Myer
Healthy
Comparison of Prilosec Over-the-counter (OTC)® Versus Prevacid® for Gastric Acid Suppression
The objective of this study is to compare Prilosec OTC® to Prevacid® for gastric acid suppression.
- Trial name
- NCT00903448
- Testing
- Prilosec OTC (omeprazole-magnesium), Prevacid
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Procter and Gamble
Chronic Hepatitis C Infection
Herpes Simplex Type 1 Suppression in Hepatitis C
The purpose of this study is to examine the effects of valacyclovir in patients who have chronic hepatitis C, antibodies to herpes simplex type 1 infection but do not have antibodies to herpes simplex type 2 infection.
- Trial name
- HSV1/HCV (NCT01580995)
- Testing
- Valacyclovir
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- VA Office of Research and Development
Adrenal Insufficiency
Adrenal Suppression and Adrenal Recovery Induced by Megestrol Acetate
Megestrol Acetate (MA) is a progesterone-like hormone that has been utilized as a birth control agent, chemotherapeutic drug, and more recently, to induce appetite and weight gain in patients malnourished as a result of radiation…
- Trial name
- NCT00575029
- Testing
- megestrol acetate
- Where
- United States
- Volunteers
- 7 people, healthy volunteers welcome
- Sponsor
- University of Arkansas
Normal Healthy Subject Population
Comparison of Prilosec OTC® Versus Zegerid® for Gastric Acid Suppression
The purpose of this study is to compare Prilosec OTC® and Zegerid® in their effects on gastric acid suppression.
- Trial name
- NCT00808769
- Testing
- Zegerid®, Prilosec OTC®
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Procter and Gamble
Type 2 Diabetes
The Impact of Free Fatty Acid (FFA-) Suppression on Myocardial Lipids and Function in Patients With Type 2 Diabetes
There is evidence that inhibition of FFA-release by acipimox is associated with a significant decrease in myocardial lipid content (MYCL) as well as the ejection fraction (as a marker of systolic left ventricular function) in…
- Trial name
- HYPOTESIS (NCT01980524)
- Testing
- acipimox
- Where
- Austria
- Volunteers
- 8 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Probiotics
Gastric Acid Suppression and Probiotic Colonization
Probiotics are over-the-counter dietary products with microorganisms that are generally consumed for health benefit. However, the durability of these microorganisms is unclear, particularly when they pass through the highly…
- Trial name
- PR (NCT03327051)
- Testing
- Omeprazole, VSL #3
- Where
- United States
- Volunteers
- 39 people, healthy volunteers welcome
- Sponsor
- Stanford University
Hiv
Program Refinements to Optimize Model Impact and Scalability Based on Evidence
In New York, the achievement of 90-90-90 goals is jeopardized not by limited access to affordable care and treatment, but by persistent disparities in HIV viral suppression (VS).
- Trial name
- PROMISE (NCT03628287)
- Testing
- Revised Care Coordination Program, Original Care Coordination Program
- Where
- 17 sites in United States
- Volunteers
- 960 people, healthy volunteers welcome
- Sponsor
- City University of New York, School of Public Health
Autonomic Nervous System Imbalance, Hypothalamic Pituitary Adrenal Axis Suppression
Active and Passive Music Therapy Interventions
Purpose: In this preparatory study, the investigators will demonstrate the feasibility of using a structured MT intervention as a treatment for MDD by measuring stress hormone levels and HRV before and after interventions.
- Trial name
- NCT03362944
- Testing
- Active Music Therapy, Passive Music Therapy
- Where
- United States
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- University of North Carolina, Chapel Hill
Neonatal Hearing Loss
Otoacoustic Emission Suppression Study
The focus of this project is on a physiologic auditory response called the Medial Olivocochlear Reflex (MOCR) that assesses peripheral neural function.
- Trial name
- NCT04749524
- Testing
- Medial-Olivocochlear Reflex (MOCR) Strength Measurement
- Where
- United States
- Volunteers
- 236 people, healthy volunteers welcome
- Sponsor
- Intelligent Hearing Systems
Parkinson Disease, Essential Tremor
Analysis and Suppression of Tremor During Grasp Using Ultrasound Imaging and Electrical Stimulation
Individuals experiencing tremors face difficulty performing activities of daily living caused by involuntary oscillation of the muscles in the hands and arms.
- Trial name
- Tremor (NCT05308368)
- Testing
- Ultrasound Imaging, Electromyography, Inertial Measurement Units (IMU)
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- North Carolina State University
Immunologic Deficiency Syndromes
Effects of Orally Administered Beta-glucan on Leukocyte Function in Humans
The purpose of this study is to test wether orally administered Beta-glucan has systemic effects in humans.
- Trial name
- BG (NCT01727895)
- Testing
- Beta-glucan (Glucan #300®)
- Where
- Netherlands
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- Radboud University Medical Center
Psoriasis
Safety Study to Assess the Potential for Adrenal Suppression Following Maximal Use Treatment With DSXS
An Open Label, Safety Study to Assess the Potential for Adrenal Suppression Following Maximal Use Treatment with DSXS .
- Trial name
- NCT02933528
- Testing
- DSXS Topical product
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Sun Pharmaceutical Industries, Inc.
HIV Infections
Triggered Escalating Real-time Adherence (TERA) Intervention
Youth Living with HIV (YLWH) often face unique challenges achieving high and sustained rates of adherence to their antiretroviral therapy (ART).
- Trial name
- TERA (NCT03292432)
- Testing
- TERA Intervention (TERA), Standard of Care (SOC)
- Where
- 8 sites in United States
- Volunteers
- 89 people, healthy volunteers welcome
- Sponsor
- University of North Carolina, Chapel Hill
Ovulation Suppression
Evaluation of Pharmacodynamic Effects on Ovulation and Cycle Control
Evaluate the adequacy of ovulation suppression, cycle control, and safety of three transdermal contraceptive delivery systems (TCDSs).
- Trial name
- NCT01250210
- Testing
- levonorgestrel and ethinyl estradiol
- Where
- 11 sites in United States
- Volunteers
- 123 people, healthy volunteers welcome
- Sponsor
- Agile Therapeutics
Weight Loss, Starvation
Effect of Caloric Restriction and Protein Intake on Metabolism and Anabolic Sensitivity
The purpose of this study is to determine if an increased protein intake can attenuate the suppression of metabolic and anabolic hormones during caloric restriction
- Trial name
- NCT02945410
- Testing
- Caloric Restriction, Protein, Exercise
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Nebraska Lincoln