- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05318248
The Role of Stress Neuromodulators in Decision Making Under Risk (Part II) (SID2)
March 31, 2023 updated by: Katja Wingenfeld, Charite University, Berlin, Germany
The Role of Stress Neuromodulators in Decision Making Under Risk
The aim of the proposed project is to combine precise pharmacological manipulation of the noradrenergic system with behavioral modeling of memory processes, and fMRI methods to study the effect of a pharmacologically induced blockade of the noradrenergic system on memory processes.
Behaviorally, the investigators will focus on the effect of the noradrenergic blockade on working memory performance, and recognition memory.
Study Overview
Detailed Description
Affective states like acute stress can influence cognition, i.e., memory processes.
Physiologically, acute stress elicits an array of autonomic and endocrine responses, including a fast release of norepinephrine from the locus coeruleus noradrenergic (LC NA) system.
Compelling evidence shows that in healthy humans, stimulation of the noradrenergic system increases memory performance whereas noradrenergic blockade reduces memory performance.
Functional magnetic resonance imaging (fMRI) studies have shown that manipulations of the noradrenergic system affects responsiveness and connectivity within networks that are important for autonomic-neuroendocrine control and temporal and spatial attention orientation.
So far, no study investigated the neural underpinnings of memory processes after a pharmacologically induced noradrenergic blockade.
The aim of the proposed project is to combine precise pharmacological manipulation of the noradrenergic system with behavioral modeling of distinct memory processes, and fMRI methods to study the effect of a pharmacologically induced blockade of the noradrenergic system on two distinct memory processes.
Behaviorally, the investigators will focus on the effect of the noradrenergic blockade on working memory performance, and recognition memory.
Participants are randomly assigned to one of two groups: (A) clonidine, or (B) placebo.
Study Type
Interventional
Enrollment (Actual)
82
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Katja Wingenfeld
- Phone Number: 49-30-450-517534
- Email: katja.wingenfeld@charite.de
Study Locations
-
-
-
Berlin, Germany
- Charité University
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 40 years (Adult)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
Male
Description
Inclusion Criteria:
- right handed, high-school diploma
Exclusion Criteria:
- former & present DSM-5 axis I disorders, medication,
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Triple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Placebo Comparator: Placebo
placebo pill
|
placebo pill
|
Experimental: Clonidin
pill 0,15 mg clonidin
|
0,15mg Clonidin orally versus placebo pill
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Working Memory (n-back task)
Time Frame: 11 minutes
|
Behavioral outcome of emotional two-back task = number of correct answers / button presses
|
11 minutes
|
Recognition Memory (word list learning)
Time Frame: 25 minutes
|
Behavioral outcome of word recognition task = number of correctly recognized words
|
25 minutes
|
Blood-oxygen-level-dependent (BOLD) response
Time Frame: 46 minutes
|
fMRI data
|
46 minutes
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
blood pressure
Time Frame: 2.5 hours
|
Treatment check
|
2.5 hours
|
Heart rate
Time Frame: 2.5 hours
|
Treatment check
|
2.5 hours
|
salivary cortisol
Time Frame: 2.5 hours
|
Treatment check
|
2.5 hours
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
March 1, 2022
Primary Completion (Actual)
March 31, 2023
Study Completion (Actual)
March 31, 2023
Study Registration Dates
First Submitted
March 16, 2022
First Submitted That Met QC Criteria
March 31, 2022
First Posted (Actual)
April 8, 2022
Study Record Updates
Last Update Posted (Actual)
April 3, 2023
Last Update Submitted That Met QC Criteria
March 31, 2023
Last Verified
March 1, 2023
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Physiological Effects of Drugs
- Adrenergic Agents
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Antihypertensive Agents
- Autonomic Agents
- Peripheral Nervous System Agents
- Analgesics
- Sensory System Agents
- Adrenergic alpha-2 Receptor Agonists
- Adrenergic alpha-Agonists
- Adrenergic Agonists
- Sympatholytics
- Clonidine
Other Study ID Numbers
- WI 3396-11
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
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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