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Development of Magnetic Resonance Spectroscopic Imaging Techniques for Imaging Metabolites in Human Brain and Muscle
Background: \- Magnetic resonance imaging (MRI) is a widely used scanning technique to obtain images of the human body and evaluate activity in the brain. A p…
Variability In Mixed Meal Tests: Fixed Versus Adjusted to Energy Needs Caloric Dose
Background: Researchers use mixed meal tolerance tests (MMTTs) to look at how people s bodies respond to eating a meal. However, researchers do not agree on h…
Understanding the Acute Modulation of Brain Activity by Transcranial Magnetic Stimulation
Background: Transcranial magnetic stimulation (TMS) is form of non-invasive brain stimulation. It is approved to treat depression. TMS may help decrease drug …
Study of the Phenotype of Overweight and Obese Adults
This study will describe the phenotype (physical and behavioral traits) of overweight and obese people. It will characterize the hormones, metabolism, food pre…
Discovering Determinants of Food Intake by Application of Machine Learning to Complex, High-Dimensional Data
Background: Many people in the United States are overweight or obese. Researchers want to learn why some people can overeat and not gain weight, whereas other…
Suvorexant for Alcohol Use Disorder (AUD): Neural Mechanisms
Background: Alcohol use disorder (AUD) is a leading cause of disease and death worldwide. New treatments for AUD are needed. Dopamine, a chemical that carries…
Phase I Clinical Trial to Study the Safety and After-effects of Transcranial Magnetic Stimulation (TMS) Using A High-density Theta Burst Stimulation (hdTBS) Paradigm
Background: Transcranial magnetic stimulation (TMS) uses magnetic pulses to affect brain activity. A type of TMS called theta burst stimulation (TBS) is appro…
Early Metabolic Effects of Antiretroviral Drugs in Healthy Volunteers: A Phase 2 Randomized Study
Background: People with HIV take drugs to keep the amount of virus in their body low. One type of these drugs, called integrase strand transfer inhibitors (IN…
Regional Cerebral Blood Flow Studies of Object Perception, Identification, Localization, and Memory
The purpose of this study is to use brain imaging technology to measure changes in blood flow to areas in the brain as individuals perform intellectual tasks. …
Recruitment and Characterization of Healthy Research Volunteers for NIMH Intramural Studies
Objective: To screen and create a list of adult volunteers in good health for participation in research studies conducted at the National Institutes of Health …
Investigating the Analgesic Potential of (2R,6R)-HNK in Acute Pain in Healthy Volunteers
Background: Opioid drugs are often prescribed for acute and chronic pain. But these drugs are addictive, and they lead to more than 14,000 overdose deaths in …
Normative Values in Audiovestibular Testing
Background: \- Researchers at the National Institutes of Health give many tests of hearing and balance. These tests can help detect problems that affect heari…