Clinical trials: Diminished Pleasure
Depression, Involutional
Function of Catecholamines in the Brain During Depression
This study will explore brain function related to depressive symptoms and will examine DNA for genes that may be involved in depressive disorders, particularly genes that regulate synthesis and metabolism of the brain…
- Trial name
- NCT00082030
- Where
- United States
- Volunteers
- 71 people, healthy volunteers welcome
- Sponsor
- National Institute of Mental Health (NIMH)
Schizophrenia / Schizoaffective Disorder, First Episode Psychosis (FEP)
French Minds Cohort: a French Longitudinal and Multimodal Cohort of Patients With Major Mood Disorders, Psychotic Disorders, Autism Spectrum Disorders, and Healthy Controls
The goal of this study is to learn whether people living with severe psychiatric disorders can be grouped into more homogeneous subgroups, across usual diagnostic categories, based on two key dimensions: social withdrawal and…
- Conditions
- Schizophrenia / Schizoaffective Disorder, First Episode Psychosis (FEP), Bipolar Disorder (BD), Major Depressive Disorder (MDD
- Trial name
- FRENCH-MINDS (NCT07881016)
- Testing
- 3T Brain MRI, Biological Sampling, Clinical, Cognitive and Digital Assessments
- Where
- 17 sites in France
- Volunteers
- 3,000 people, healthy volunteers welcome
- Sponsor
- Fondation FondaMental
Anhedonia
Translational Model of Anhedonia
The proposed research addresses a major mental health issue (anhedonia) with a novel computationally-inspired translational technique in both humans and mice.
- Trial name
- NCT03856177
- Testing
- Emotion Induction
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of New Mexico
Depressive Disorder, Major
Dopamine Modulation of Motivation and Motor Function in Major Depression & Inflammation
A large body of evidence on depression heterogeneity point to an "immunometabolic" subtype characterized by the clustering of immunometabolic dysregulations with atypical behavioral symptoms related to energy homeostasis.
- Trial name
- MOTIVADE (NCT05909267)
- Testing
- L-dopa/Carbidopa
- Where
- Germany
- Volunteers
- 165 people, healthy volunteers welcome
- Sponsor
- Charite University, Berlin, Germany
Major Depressive Disorder
Sex, Hormones and Gamma-Aminobutyric Acid (GABA) in Stress Induced Anhedonia in Depression
Using an innovative multi-modal imaging approach, this study investigates the role of the neurochemical gamma-aminobutyric acid (GABA), brain activity, as well as hormones in understanding sex differences in Major Depressive…
- Trial name
- NCT03031665
- Where
- United States
- Volunteers
- 251 people, healthy volunteers welcome
- Sponsor
- Mclean Hospital
Major Depressive Disorder
The Effect of Ketamine on Aesthetics and Role for Antidepressant Effects
The aim of this study is to assess the impact of ketamine on aesthetic perception and processing. This study assesses the role of these effects in facilitating ketamine's antidepressant properties, with a focus on anhedonia.
- Trial name
- NCT05320107
- Testing
- Ketamine
- Where
- Austria
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Smoking
Effects of Quitting Study A Test of Pre-clinical Findings
The most widely-accepted animal model of nicotine withdrawal states stopping nicotine makes rewarding events become less rewarding. The current study will test if this is true in humans.
- Trial name
- NCT01824511
- Testing
- Smokers cease smoking
- Where
- 2 sites in United States
- Volunteers
- 287 people, healthy volunteers welcome
- Sponsor
- University of Vermont
Depression, Anhedonia
Mental Imagery and Psychological Well-being
This study aims to investigate the effects of mental imagery practice on depression, behavioral activation, psychological well-being and other processes involved in depression such as anhedonia.
- Trial name
- NCT05771636
- Testing
- Mental Imagery, Control condition (activity planification)
- Where
- Belgium
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- University of Liege
Anhedonia
Dissociating Components of Anhedonia: A Pilot fMRI Study
Anhedonia, decreased motivation for and sensitivity to rewarding experiences, is present in at least 1/3 of community dwelling older adults and is a feature of various psychiatric and neurological disorders, including late-life…
- Trial name
- NCT02569034
- Testing
- Functional Magnetic Resonance Imaging, Effort-Expenditure for Rewards Task
- Where
- United States
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- University of Florida
ASD
Proof of Mechanism Study for the Treatment of Social Anhedonia in ASD
This project will use the experimental medicine approach of a Phase IIa Proof of Mechanism 16-week, randomized, double-blind, controlled trial of L-DOPA versus placebo administration in combination with a 16 week social skills…
- Trial name
- ACEP4 (NCT03243552)
- Testing
- Social Skills Training
- Where
- United States
- Volunteers
- 56 people, healthy volunteers welcome
- Sponsor
- University of California, Los Angeles
Depression - Major Depressive Disorder, Anhedonia
Elucidating the Relevance of the Psychedelic Experience to Psilocybin's Anti-Anhedonic Effects
The goal of this clinical trial is to systematically categorize potential prohedonic effects of psilocybin in patients with anhedonia in depression. The main questions it aims to answer are: Primary Objectives 1.
- Trial name
- NCT07490353
- Testing
- Psilocybin (Usona Institute), Risperidone 1 MG, MRI
- Where
- Austria
- Volunteers
- 85 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Healthy
Chatbot Intervention Effects on Belief Updating in Anhedonia
The main aim of the present study is to investigate the effects of a Motivational Interviewing-based artificial intelligence chatbot on belief updating in college students with elevated levels of depression and anhedonia by…
- Trial name
- NCT07663019
- Testing
- MI Chatbot Interaction, Active Control Chatbot Interaction
- Where
- China
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- University of Electronic Science and Technology of China
Depression
Effects of Bupropion in Depression
This study will investigate the role of dopaminergic neural systems in the symptoms and treatment of depression. 40 patients who meet DSM-IV criteria for a diagnosis of depression will be compared to a matched sample of healthy…
- Trial name
- NCT02104128
- Testing
- Bupropion
- Where
- United Kingdom
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- University of Oxford
Anhedonia
Examining Reward-Related Predictors and Mechanisms of Change in BA Treatment for Anhedonic Adolescents
The prevalence of major depressive disorder (MDD) is relatively low in childhood (i.e., 1-3%), but increases substantially during adolescence.
- Trial name
- NCT02498925
- Testing
- Behavioral Activation
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Mclean Hospital
Anhedonia in Healthy Volunteers, Older Adults (50-90 Years)
A Study of Psychedelics in Healthy Older Adults With Low Well-being
This study is being conducted to understand changes in brain activity following administration of two different drugs (Psilocybin and Dextromethorphan) in older adults with low well-being.
- Trial name
- OAD1 (NCT07386730)
- Testing
- Psilocybin (drug), Dextromethorphan (DXM)
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Jennifer Mitchell
Anhedonia, Depressed Mood
Depressed Mood and Anhedonia in Healthy Adults
The aim of this study is to evaluate the effect of nutraceutical supplement on depressed mood and anhedonia in volunteers after 8 weeks of consumption.
- Trial name
- MOOD5 (NCT05306093)
- Testing
- Nutraceutical, Maltodextrin
- Where
- France
- Volunteers
- 94 people, healthy volunteers welcome
- Sponsor
- Institut Pasteur de Lille
Psychiatric Disorders Mood, Anhedonia
Pramipexole for Anhedonic Depression
The heterogeneity of depression suggests that several different neurocircuits and pathophysiological mechanisms are involved. Anhedonia - the inability to experience pleasure from, or the lack of motivation to carry out, usually…
- Conditions
- Psychiatric Disorders Mood, Anhedonia, Depression
- Trial name
- PRIME-PRAXOL (NCT05355337)
- Testing
- Pramipexole
- Where
- Sweden
- Volunteers
- 85 people, healthy volunteers welcome
- Sponsor
- Region Skane
Schizophrenia, Depression
Validating Reward-related Biomarkers (RTOC)
Deficits or abnormalities in reward processing are present in a number of psychiatric disorders. The overarching objective of the study is to conduct initial validation work towards optimising three experimental tasks - which…
- Conditions
- Schizophrenia, Depression, Motivation, Anhedonia, Physical
- Trial name
- RTOC (NCT04024371)
- Testing
- Self-rating Questionnaires, Measures of Reward processing/reinforcement learning, Additional Schizophrenia-specific Questionnaires and Interviews
- Where
- 4 sites in Germany, Greece and 2 more
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- Maastricht University
Healthy Participants, Anxiety Disorders (With High Anxiety Symptoms)
tVNS and Approach-Avoidance Behavior in Anhedonia and Anxiety
This study investigates if anhedonia and anxiety symptoms are associated with alterations in reinforcement learning, effort trade-offs for wins vs. punishments, and foraging behavior under threat.
- Conditions
- Healthy Participants, Anxiety Disorders (With High Anxiety Symptoms), Depressive Disorders (With High Anhedonia Symptoms), Comorbid Depression and Anxiety Disorder (With High Anhedonia and High Anxiety Symptoms)
- Trial name
- NCT07476469
- Testing
- tVNS
- Where
- Germany
- Volunteers
- 104 people, healthy volunteers welcome
- Sponsor
- Dr. Nils B. Kroemer