- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04371146
The Role of Dopaminergic and Noradrenergic Neurotransmission in Value- and Salience-based Decision-Making
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
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Zurich, Switzerland, 8006
- University of Zurich
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Physically and psychiatrically healthy men and women aged ≥ 18- ≤ 35 years
- Ability and willingness to participate in the study
- Signed informed consent
Exclusion Criteria:
- Serious past brain disease or injury (data quality)
- Frequent headaches (of any sort, > 1/week) or migraine (irrespective of frequency)
- History of epileptic seizures
- Any neurological disorder
- Surgery to head or heart (safety, potential metal pieces)
- Pacemaker, hearing aid or neurostimulator (safety, metal pieces)
- Known cardiac or cardiovascular disease or anomaly
- Family history of sudden death due to cardiac arrhythmia
- High or low blood pressure, history of heart attack, infrequent heartbeat
- Respiratory problems (including difficulty with breathing through the nose)
- Glaucoma (present or in history)
- Insufficiency of kidney or liver, acute liver disease
- Any psychiatric disorder (especially depression, mania, schizophrenia, addiction and suicidality)
- Severe vocal or motor tics (methylphenidate, data quality)
- Severe psychosomatic disorder (somatic complaints without clear medical cause, has a mental component)
- Pregnancy, nursing, or currently planned pregnancy
- Current allergy in general or allergy to methylphenidate or reboxetine
- Severe intolerance to lactose including strong diarrhea after only a few mg (weak lactose intolerance is no exclusion criterion as medication only contains slightest dosage (around 4mg) of lactose)
- Currently taking any medication that might interfere with Methylphenidate and Reboxetine, especially MAO-Inhibitors (e.g. Aurorix (Moclobemid) und Azilect (Rasagilin), antipsychotics, antibiotics, and medication for heart diseases
- Currently taking any further medication (besides birth control) or natural products (infrequent intake of natural products and/or food supplements need to be mentioned to the examiner)
- Drug abuse (current or past abuse; in case of single use please inform the examiner)
- Serious acute or chronic disease that could interfere with participation in the experiments
- Inability to understand the instructions or insufficient comprehension of German language
- Participants having their weight outside of the range of ≥ 60 kg - ≤ 80 kg
- Clinically relevant score in STAI T (anxiety), measured during prescreening on a separate day
- Long QT syndrome or other arrhythmias, measured during prescreening on a separate day
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Dopamine reuptake inhibitor
Participants in the dopamine reuptake inhibitor group will be asked to take one pill containing 35 mg methylphenidate 1.5 hours before performing the tasks.
|
35 mg methylphenidate (Ritalin®) is administered once using a randomized placebo-controlled between subject's design
Other Names:
|
Experimental: Noradrenaline reuptake inhibitor
Participants in the noradrenaline reuptake inhibitor group will be asked to take one pill containing 8 mg reboxetine 1.5 hours before performing the tasks.
|
8 mg Reboxetine (Edronax®) is administered once using a randomized placebo-controlled between subject's design
Other Names:
|
Placebo Comparator: Placebo
Participants in the placebo group will be asked to take a placebo pill 1.5 hours before performing the tasks.
|
A placebo pill is administered once using a randomized placebo-controlled between subject's design
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Response time data
Time Frame: These tasks take place 1,5 hours after the drug was administered
|
The investigators record responses and specifically reaction times during 5 different decision-making tasks. In a value vs salience task, value and salience processing is disentangled during value-based decision-making. Participants either accept or reject compound stimuli that were before associated with monetary outcomes. In a face in the crowd task, participants detect a target face (angry vs happy) in a crowd of opposite face type. During a task on risk and ambiguity decision-making, participants have to decide between safe and lottery options associated with either monetary risk or ambiguity. In an adaptive risk-taking task, participants have to choose between two risky monetary options. In an effort task, participants decide whether they are willing to exert physical effort for monetary reward. Response times are measured in milliseconds from the tasks. The investigators calculate how long participants take to make decisions in each trial. |
These tasks take place 1,5 hours after the drug was administered
|
Choice data
Time Frame: These tasks take place 1,5 hours after the drug was administered
|
As a dependent variable the investigators record responses and specifically choices made during the above-mentioned different decision-making tasks.
The investigators evaluate what kind of answers were made during each trial of the decision-making tasks, in respect to correctness or preference (percentage).
|
These tasks take place 1,5 hours after the drug was administered
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Computational modelling applied to choice data
Time Frame: These tasks take place 1,5 hours after the drug was administered
|
Computational parameters are mathematically estimated from the data of participants during the above-mentioned decision-making tasks.
Specifically, mathematical models will be applied to choice data (percentage).
|
These tasks take place 1,5 hours after the drug was administered
|
Computational modelling applied to response time data
Time Frame: These tasks take place 1,5 hours after the drug was administered
|
Computational parameters are mathematically estimated from the data of participants during the above-mentioned decision-making tasks.
Specifically, mathematical models will be applied to response time data (milliseconds).
|
These tasks take place 1,5 hours after the drug was administered
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Philippe Tobler, PhD, University of Zuerich
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Physiological Effects of Drugs
- Adrenergic Agents
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Psychotropic Drugs
- Neurotransmitter Uptake Inhibitors
- Membrane Transport Modulators
- Antidepressive Agents
- Dopamine Agents
- Dopamine Uptake Inhibitors
- Central Nervous System Stimulants
- Adrenergic Uptake Inhibitors
- Methylphenidate
- Reboxetine
Other Study ID Numbers
- Value-Salience-2017-0444
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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