Found 1,144 clinical trials
Glutamatergic Adaptation to Stress as a Mechanism for Anhedonia and Treatment Response With Ketamine
The main purpose of this study is to investigate the effects of ketamine on decision-making and emotion processing in a sample of individuals diagnosed with Major Depressive Disorder (MDD).
Accelerated Intermittent Theta-Burst Stimulation Ameliorate Major Depressive Disorder by Regulating CAMKII Pathway
Major depressive disorder(MDD) is a complex and heterogeneous mental disorder. Repeated transcranial magnetic stimulation (rTMS), as a non-invasive neuroregulatory technique, has shown a promising function in the treatment of depression. Theta-burst transcranial magnetic stimulation (TBS) model significantly shortened the duration of physical therapy treatment, and iTBS under the accelerated model …
Beyond Monoamines: The Role of the Nociceptin/Orphanin FQ Receptor in Major Depression
This study looks at the role of the Nociceptin/Orphanin FQ receptor system in the brain of individuals with current or past major depressive disorder (MDD). It also examines how individuals with a history of depression make certain decisions and which brain regions are involved in such decisions. Information collected through …
Closed-Loop Deep Brain Stimulation for Major Depression
Neurons are specialized types of cells that are responsible for carrying out the functions of the brain. Neurons communicate with electrical signals. In diseases such as major depression this electrical communication can go awry. One way to change brain function is using electrical stimulation to help alter the communication between …
Supportive-Expressive and Emotion-Focused Treatment for Depression
This study will explore the mechanisms of change that are activated when individuals receive a treatment that targets their weakness and the mechanisms activated when the treatment capitalize on their strength. Patients will be assigned to one of two types of psychotherapies in treating people with a major depression disorder, …
Neural Circuit Effects of Ketamine in Depression
This project is designed to examine the role of the subgenual anterior cingulate cortex (sgACC) in anhedonia and anxiety in humans with depression, as well as the acute and sustained effects of ketamine on agACC activation and depression symptoms.
Neural Correlates of Stress and Perceived Control in Adolescent Depression
Lack of perceived control, particularly during stress, has been critically implicated in major depressive disorder (MDD) and anhedonic symptoms, especially among female adolescents; yet the neural underpinnings of perceived control disruptions in MDD remain poorly understood. Using functional magnetic resonance imaging with a novel "value of control task" in conjunction …
Interleaved TMS-fMRI in Ultra-treatment Resistant Depression
This is a study that will recruit patients from the neurosurgery clinic and the regular TMS clinic. It's a smaller study designed to collect brain imaging pre-treatment and then use image guided TMS to treat patient with a one week "accelerated" rTMS protocol using the research TMS machine that is …
Psychopharmacotherapy for Depressive Patients
The primary purpose of this study is to compare the short (12 week) and long-term (1-year) efficacy and the tolerability between stepwise psychopharmacotherapy and antidepressant monotherapy for 12 weeks in adult patients with major depressive disorders, stratified by the multimodal serum biomarker scores.
Regulation of Affect and Physiology in Depression
Although treatments for depression are effective for many people, not everyone responds to treatment. This lack of treatment response could be due, in part, to the presence of multiple underlying causes of people's depression. This study aims to identify subtypes of depression, based on two factors: how successful people perceive …
