235 Studies Now Enrolling
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Displaying 201 - 254 of 254
Condition: Healthy Volunteers
Investigator: Sharon Mannheimer, MD
Status: Closed
This is a COVID transmission study happening across the US to help us learn whether the COVID-19 vaccine stops the spread of the SARS-CoV-2 virus (COVID): both initial infection and transmission to others. The answer to this question can have an important impact on all of our lives. Currently we are enrolling unvaccinated people. You will not be required to…
Condition: Psychiatric Disorders / Anxiety
Investigator: Franklin Schneier, MD
Status: Closed
RESEARCH STUDY:Brief Intervention for Public Speaking Fears (IRB#7293).- Are you between the ages of 18 - 60?- Do you have bothersome fears of public speaking?- Are you interested in trying a novel intervention?This research study tests whether a brief intervention using a medication called propranolol is effective at reducing public speaking fears. This…
Condition: Healthy Volunteers
Investigator: Marla Hamberger, PhD
Status: Closed
Some medical conditions in children involve difficulty with speech and language. Therefore, accurate measurement of these difficulties is important for both diagnosis and treatment. Unfortunately, the test that is currently used to assess object naming-- one of the most common language problems found in these conditions is the same test that is used for…
Condition: Healthy Volunteers
Investigator: Magdalena Sobieszczyk, Md
Status: Closed
Almost 40,000 people get HIV in the U.S. each year and almost all occur via sexual contact, especially male-to-male contact. The number of new infections has decreased slightly each year, however, we need other HIV prevention tools, such as developing a greatly, effective HIV vaccine, to better reduce HIV infections. SCREENING AND EDUCATION: 1. Consent will…
Condition: Healthy Volunteers
Investigator: Micaela Martinez, PhD
Status: Closed
How does the light we experience in day-to-day life affect our body clock? Interested in joining a new project to help scientists at Columbia University understand how light pollution and light-at-night affects our body clock? You or your child may be eligible to participate. The study involves wearing a small light sensor on a lanyard and a temperature…
Condition: Healthy Volunteers
Investigator: Magdalena Sobieszczyk, Md
Status: Closed
Antibodies are one of the natural ways that our bodies fight or prevent infection. Were testing an antibody to find out if its safe, if it doesn't make people feel uncomfortable and to find out what may be the best dose if its given by IV infusion or sub-cutaneous injection. You cannot get HIV from the Bispecific Antibody. We'll ask you to…
Condition: Psychiatric Disorders / Obsessive Compulsive Disorder (OCD)
Investigator: Yagna Pathak, PhD
Status: Closed
The study aims to assess the impact of repetitive transcranial magnetic stimulation (rTMS) on brain imaging and neurophysiological measures in patients with Obsessive-Compulsive Disorder (OCD).
Condition: Healthy Volunteers
Investigator: Karen Bell, MD
Status: Closed
The purpose of this study is to test whether an investigational drug called solanezumab can slow the progression of memory problems associated with brain amyloid. The study will also test 1) whether the anti-amyloid treatment can slow evidence of AD-related brain injury on imaging tests to look at brain structure and function and 2) the effect of…
Condition: Psychiatric Disorders / PTSD
Investigator: Yuval Neria, PhD
Status: Closed
Emerging research has demonstrated a relationship between visual attention patterns and anxiety disorders, including PTSD. This study is designed to examine these visual attention patterns using eye-tracking A simple device that monitors eye-movements. The study included two sessions conducted approximately 1 week apart, each no longer than 1 hour. In both…
Condition: Healthy Volunteers
Investigator: Allison Borowski, MD
Status: Closed
We are currently recruiting women to TMIST, a clinical trial that will help us develop strategies that tailor breast cancer screening to the risks of individual women. This is a screening trial. The purpose of this trial is to determine if tomosynthesis (3-D) mammography detects breast cancer at earlier stage than current method of 2-D digital mammography.
Condition: Psychiatric Disorders
Investigator: James Whitworth, PhD
Status: Closed
The purpose of this study is to examine the physical and mental effects of exercise in adults who have experienced a recent traumatic event. Participation in this study requires attending 12 sessions at Teachers College Columbia University over the course of six weeks. Each session will last between 30 and 60 minutes. Participants will be compensated with…
Condition: Healthy Volunteers
Investigator: Helen Simpson, MD, PhD
Status: Closed
Obssesive Compulsive Disorder (OCD) and related disorders characterized by repetitive thoughts and behaviors (e.g., Tourette Syndrome and Eating Disorders) are severe conditions that lead to significant health-related disability. Dysfunction in the brain circuits involved in cognitive control and reward processing are thought to contribute to the symptoms…
Condition: Healthy Volunteers
Investigator: Loren Gianini, PhD
Status: Closed
The goal of this study is to better understand why some people have managed to lose weight and keep it off while others have not. We are recruiting people who have lost weight and kept it off as well as healthy non-dieters with overweight or obesity who are not trying to lose weight. Study participation involves computer tasks, brain imaging, and eating a…
Condition: Healthy Volunteers
Investigator: Yaakov Stern, PhD
Status: Closed
Train the Brain Study: The purpose of this study is to investigate the effect of a web-based (remote, at home) computerized cognitive training protocol on cognitive performance in healthy older adults. Thetraining will involve a daily life situation in a multi-task context. If you are eligible, you will be asked tocomplete 13 web-based sessions, twice a…
Condition: Psychiatric Disorders / Depression
Investigator: Randy Auerbach, PhD
Status: Closed
We are seeking adolescents ages 13-17 to participate in a study on anhedonia. Anhedonia is the reduced ability to feel pleasure or enjoy things, and is a key feature of depression and other mental illnesses. If you believe your child is experiencing anhedonia, they may be eligible to participate in this study. If your child participates in this study, we…
Condition: Psychiatric Disorders
Investigator: Ari Shechter, PhD
Status: Closed
We are currently looking for men and women, age 18-65 y, to participate in a sleep study. To participate you must have experienced insomnia (difficulty falling asleep, staying asleep, or experiencing sleep that is unrefreshing) for at least 1 month. This is a 2-phase outpatient and inpatient study. We will test 2 different non-drug based methods to improve…
Condition: Healthy Volunteers
Investigator: Marla Hamberger, PhD
Status: Closed
The purpose of this project is to develop a set of word finding or naming tests for adults, ages 66 and above. The main task involves naming pictures of common objects (e.g. broom), or naming items when given a description (e.g. "what children ride to school in"). There are some other tasks as well such as single word reading, number repetition,…
Condition: Healthy Volunteers
Investigator: Cassia Wells, MD
Status: Closed
Antibodies are one of the natural ways that our bodies fight or prevent infection. We're testing an antibody to find out if it's safe, if they don't make people feel uncomfortable, how these study antibodies move throughout the body, and to measure antiviral activity. You cannot get HIV from the study antibody. First, request to be contacted…
Condition: Healthy Volunteers
Investigator: Sharon Oberfield, MD
Status: Closed
We are recruiting boys between 3-9 years old and girls between 3-8 years old to participate in a research study. Children who would like to participate must be healthy and not showing signs of puberty. The goal of the study is to understand the relationship between early body development, metabolism (sugars and fats processing), and the saliva microbiome (…
Condition: Psychiatric Disorders / Anxiety
Investigator: Jonathan Posner, MD
Status: Closed
The goal of this study is to advance our understanding of how the brain processes emotion in adolescents. Adolescents with and without symptoms of anxiety are invited to participate. This study takes place over two days and includes an evaluation and a brain imaging session. Participants will be compensated up to $250. This study does not provide treatment.
Condition: Healthy Volunteers
Investigator: Marc Richmond, MD
Status: Closed
Patients with hypoplastic left heart syndrome and other single right ventricle lesions who have undergone the Fontan procedure have a high risk of neurodevelopmental disorders that affect quality of life and adulthood employment. This study will leverage the ongoing National Heart, Lung, and Blood Institute (NHLBI)-funded Single Ventricle Reconstruction…
Condition: Psychiatric Disorders / Depression
Investigator: Patrick Brown, PhD
Status: Closed
We are studying the relationship between mitochondrial function and the experience of fatigue. Mitochondria are the powerhouses of the cell. Cells within different organs contain hundreds to thousands of mitochondria, which sustain life and fuel energy-dependent processes that we do every day including muscle contraction and cognitive activity. They act…
Condition: Healthy Volunteers
Investigator: Jeffrey Shaman, PhD
Status: Closed
You are invited to participate in a study that seeks to understand how respiratory virus infections affect human hosts at various stages of symptomology and predict future wellness states using biophysical measurements from a smartwatch. The goals are to identify biomarkers predictive of symptom outcome and develop early wellness prediction models. The…
Condition: Healthy Volunteers
Investigator: Jonathan Posner, MD
Status: Closed
Children with Attention-Deficit/Hyperactivity Disorder (ADHD) are typically treated with two types of medications: stimulants and non-stimulants. These medications work in different ways to treat ADHD symptoms, but we do not fully understand the brain mechanisms underlying the medications' effects. This study will use MRI scanning to look at changes in…
Condition: Psychiatric Disorders / Obsessive Compulsive Disorder (OCD)
Investigator: Helen Simpson, MD, PhD
Status: Closed
The purpose of this pilot research study is to test whether certain components of the marijuana plant, known as "cannabinoids", may help to reduce symptoms in patients with OCD. Specifically, patients enrolled in the study will smoke marijuana containing different concentrations of 2 different cannabinoids, THC and CBD. Both of these agents act on…
Condition: Healthy Volunteers
Investigator: Suzanne Lewis, MD
Status: Closed
While optical colonoscopy (OC) is considered the gold standard for colorectal cancer screening, there are alternative approaches to visualization of the colon. Participants will receive screening by either colon capsule endoscopy (CCE) and computed tomographic colonography (CTC). They will be instructed to follow a detailed colon preparation regimen prior…
Condition: Healthy Volunteers
Investigator: Marie-Pierre St-Onge, PhD
Status: Closed
We are doing this research study to find out how different amounts of sleep restriction affect yourbody's ability to generate heat. This study will determine the effects of partial sleep restriction (PSR) (4 h in bed) and total sleep deprivation (TSD) (0 h in bed) compared to a full night of habitual sleep (HS)(8 h in bed) on brown adipiose tissue (…
Condition: Healthy Volunteers
Investigator: Moise Desvarieux, MD, PhD
Status: Closed
We are looking for people ages 65 and older to help us evaluate if an investigational drug improves muscle function, which can reduce risk of falls and fractures. To be considered for the study, you: 1. Must complete a pre-screening phone interview to assess your eligibility 2. If you are eligible, you will be invited to attend an in-person appointment at…
Condition: Psychiatric Disorders / ADD/ADHD
Investigator: Jonathan Posner, MD
Status: Closed
Children with Attention-Deficit/Hyperactivity Disorder (ADHD) are typically treated with two types of medications: stimulants and non-stimulants. These medications work in different ways to treat ADHD symptoms, but we do not fully understand the brain mechanisms underlying the medications' effects. This study will use MRI scanning to look at changes in…
Condition: Psychiatric Disorders / Obsessive Compulsive Disorder (OCD)
Investigator: Helen Simpson, MD, PhD
Status: Closed
This study is investigating how the brains of people with OCD may change with treatment. The study uses Magnetic Resonance Imaging (MRI) to scan the brain, and the treatment used is a form of Cognitive-Behavioral therapy consisting of Exposure and Ritual Prevention (EX/RP). Participants will undergo a scan, which lasts for approximately 2 hours and takes…
Condition: Healthy Volunteers
Investigator: Magdalena Sobieszczyk, Md
Status: Closed
We are working on a new HIV vaccine study that builds on past success and other ongoing studies. This new study is called HVTN 120 and is testing a vaccine for HIV prevention. The Thai Trial has been the only study where the vaccines were partially protective in preventing HIV. We learned a lot from that study, and are now improving on next generation of…
Condition: Healthy Volunteers / Exercise
Investigator: Richard Sloan, PhD
Status: Closed
This study focuses on the effects of aerobic conditioning on cognition and brain activity. Eligible participants will complete an exercise stress test, MRI, and cognitive testing session at the beginning and end of the study. Once participants complete the first set of appointments, they will be randomly assigned to one of two conditions for 12-weeks.…
Condition: Psychiatric Disorders / Obsessive Compulsive Disorder (OCD)
Investigator: Helen Simpson, MD, PhD
Status: Closed
Eligible participants will be asked questions about their symptoms, complete questionnaires, and receive sessions of Cognitive-Behavioral therapy consisting of Exposure and Ritual Prevention (EX/RP) accompanied by the use of a mobile app. The purpose of this study is to assess whether the mobile app may be effective in improving symptoms of OCD.
Condition: Healthy Volunteers
Investigator: Carolyn Westhoff, MD
Status: Closed
Tired of having to remember to take your birth control? If you are a woman between the ages of 18 and 35, are pre-menopausal, sexually active and do NOT wish to become pregnant, you are invited to see if you may qualify for a research study. The purpose of this research study is to test the effectiveness of an investigational contraceptive vaginal ring. If…
Condition: Psychiatric Disorders / Bipolar Disorder
Investigator: Martin Lan, MD
Status: Closed
We are trying to understand what causes bipolar disorder and how medications treat bipolar depression. If you participate, you will have two different brain scans (MRI and PET scan). You will also have antidepressant treatment for free. We will then be able to see whether information on the brain scans connects with how people do on the medications. The…
Condition: Healthy Volunteers
Investigator: Richard Sloan, PhD
Status: Closed
The purpose of this research study is to determine whether ambulatory monitoring of blood pressure measured by a finger touch blood pressure monitor is a viable approach to measuring blood pressure in the field. A secondary aim is to determine whether the finger touch blood pressure monitor is influenced by individual differences in current stress levels…
Condition: Psychiatric Disorders
Investigator: Yuval Neria, PhD
Status: Closed
Columbia University Medical Center is presently recruiting individuals ages 18-60, who haveexperienced a traumatic event, to participate in a research treatment study on PTSD. For yourparticipation, you'll receive brief treatment at no cost and $100 in compensation.
Condition: Healthy Volunteers
Investigator: Richard Sloan, PhD
Status: Closed
The purpose of this study is to examine the effect of dietary flavanols on brain activity and memory. Flavanols represent a specific group of plant derived nutrients that are found in cocoa beans, grapes, tea, berries and various other fruits and vegetables. The specific flavanols investigated in this study come from cocoa. Participants will be asked to…
Condition: Psychiatric Disorders / Bipolar Disorder
Investigator: David Hellerstein, MD
Status: Closed
This study is a double-blind and placebo-controlled study to assess its efficacy of the new drug Lumateperone for patients with Major Depressive Episodes associated with Bipolar I and Bipolar II disorder. Lumateperone is thought to exert its antidepressant effect through interaction with sereotogenic, dopaminergic, and glutamergic neurotransmitter targets.…
Condition: Healthy Volunteers
Investigator: Paula Castano, MD, MPH
Status: Closed
Do You Have a Mirena IUD? You may qualify for a study on the extended use of the Mirena IUD! You may qualify if you are 18 to 33 years old and had your Mirena placed in 2013. Compensation available for time and effort. Find out if you qualify!
Condition: Psychiatric Disorders / Depression
Investigator: David Hellerstein, MD
Status: Closed
Patients who are either interested in discontinuing their current antidepressant or have discontinued an antidepressant in the past 6 weeks will be provided with an FDA approved medicine, Vortioxetine (brand name Trintellix). Treatment with Vortioxetine will start after the past antidepressant is discontinued. Vortioxetine dosage is adjustable throughout…
Condition: Healthy Volunteers
Investigator: Marie-Pierre St-Onge, PhD
Status: Closed
The overall goal of this project is to determine whether short sleep duration is a risk factor for cardiovascular disease in women. We are currently looking for healthy, non-smoking women to participate in a sleep study. You must be willing to come to Columbia University Medical Center once a week for two 6-week periods and regularly sleep at least 7-9…
Condition: Healthy Volunteers
Investigator: Loren Gianini, PhD
Status: Closed
The goal of this study is to better understand why some people have managed to lose weight and keep it off while others have not. We are recruiting people who have lost weight and kept it off as well as healthy non-dieters with overweight or obesity who are not trying to lose weight. Study participation involves computer tasks, brain imaging, and eating a…
Condition: Psychiatric Disorders / Bipolar Disorder
Investigator: Martin Lan, MD
Status: Closed
We are trying to understand what causes bipolar disorder and how medications treat bipolar depression. Particularly, we are looking at the importance of dopamine signaling in the process. If you participate, you will have two different brain scans (MRI and PET scan). You will also have treatment for your depression with an FDA approved medication,…
Condition: Psychiatric Disorders / Obsessive Compulsive Disorder (OCD)
Investigator: Helen Simpson, MD, PhD
Status: Closed
The Center for OCD and Related Disorders is currently conducting a study in treating Obsessive-compulsive Disorder (OCD), which is a severe illness characterized by distressing intrusive thoughts, images, or impulses about a variety of themes (e.g., fears of contamination or harm) and repetitive behaviors such as excessive washing or checking. The study is…
Condition: Healthy Volunteers
Investigator: Eldad Hod, MD
Status: Closed
One of the consequences of donating blood is iron deficiency. In this study, we will screen healthy frequent blood donors for iron deficiency. We will enroll iron deficient donors and randomize them to intravenous iron treatment or placebo in order to determine whether iron deficiency has any harmful effects on the blood supply and the donors themselves.
Condition: Healthy Volunteers / Exercise
Investigator: Richard Sloan, PhD
Status: Closed
This study focuses on the effects of aerobic conditioning on cardiovascular function and inflammatory response. Eligible participants will complete an exercise stress test, laboratory visit, and cognitive testing session at three specific time points over the course of the study. Once the initial set of appointments is complete, participants are randomly…
Condition: Healthy Volunteers
Investigator: Blandine Laferrere, MD, PhD
Status: Closed
This pilot study is designed to examine the effect of a novel type of lifestyle intervention, administered via a smartphone app, on weight loss and improvement of metabolic health in individuals with overweight and/or obesity. A mobile application will be used to document eating behavior through photos. In addition, participants will receive personalized…
Condition: Psychiatric Disorders / Depression
Investigator: David Hellerstein, MD
Status: Closed
This is a pre-marketing (Phase 2A) multi-site study of an investigational drug, ganaxolone, as a potential treatment for non-psychotic post-partum depression. Eligible subjects who agree by signing informed consent will spend four days on the 5-South Research Unit (5-S) of the New York State Psychiatric Institute. For 6 hours they will have an tube in a…
Condition: Healthy Volunteers
Investigator: Karen Marder, MD, MPH
Status: Closed
This study is recruiting people who have a family history of a neurodegenerative diseases, such as Alzheimer's disease or other form of dementia including frontotemporal dementia and prion disease, who are interested in doing predictive genetic testing. Participants will complete questionnaires prior to testing and then 1 month and 6 months after…
Condition: Healthy Volunteers
Investigator: Sharon Wardlaw, MD
Status: Closed
This 2-phase study aims to explore ways to predict who will respond well to the FDA approved weight loss drug lorcaserin and to understand the mechanisms that develop which limit drug efficacy. Subjects will be recruited for a 5-week crossover study (phase 1) with lorcaserin and placebo followed by treatment with lorcaserin for 24 weeks (phase 2). Phase 1…
Condition: Healthy Volunteers
Investigator: Jeffrey Miller, MD
Status: Closed
The purpose of this study is to use Positron Emission Tomography (PET) to identify changes in brain chemistry that may cause an episode of depression. This study will be carried out in approximately 30 subjects. PET is a technique that provides "pictures" of chemical connections in the brain by injecting and monitoring a radioactive substance. In…
Condition: Healthy Volunteers
Investigator: Julie Franks, PhD
Status: Closed
Almost 40,000 people get HIV in the U.S. each year and almost all infections occur via sexual contact, especially male-to-male contact. The number of new infections has decreased slightly each year; however, we need other HIV prevention tools, including an effective HIV vaccine, to better protect people from HIV infection. An HIV vaccine is the best long-…
Condition: Psychiatric Disorders / ADD/ADHD
Investigator: Jonathan Posner, MD
Status: Closed
In this study, we are trying to learn more about how stimulant medication produces an improvement in emotional lability (frequent mood changes and excessive emotional reactions) in patients with Attention Deficit Hyperactivity Disorder (ADHD.) Although ADHD is primarily associated with inattention, hyperactivity, and impulsivity, emotional ability plays a…