- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05595434
Reality-monitoring & Stress (REALIST)
Study of Reality-monitoring Process and Influence of Stress Using an Electrophysiological Approach
Reality-monitoring is a crucial cognitive process in daily life to remember the source of an information. Deficits of reality-monitoring have been shown into the continuum of schizophrenia, suggesting a preexisting alteration in population at-risk for psychosis that will be exacerbated during psychotic transition. It is admitted that stress plays a crucial role in the psychotic transition and can alter cognitive performances. However, less is known about the effects of stress on reality-monitoring, even though this process appears to be central in psychotic disorders.
The aim of this project is to investigate the effect of stress on reality-monitoring, both on behavioral and neurophysiological aspects
Study Overview
Status
Conditions
Detailed Description
Study Type
Enrollment (Estimated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: SARTLET Lydie
- Phone Number: +33 0437915531
- Email: lydie.sartelet@ch-le-vinatier.fr
Study Contact Backup
- Name: Mondino Marine, PhD
- Phone Number: +33 0437915565
- Email: marine.mondino@ch-le-vinatier.fr
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Right-handed Men and Women aged between 18 and 30
- Having given their written informed consent
- For women: oral contraceptive use
- French speakers and readers
Exclusion Criteria:
- Do not consent to be included in the study
- Smokers
- Night workers
- Having visual or hearing impairments that could prevent the successful completion of tasks involving reading or listening to sounds
- Taking drug treatment (except oral contraceptive)
- Having a somatic pathology in particular neurological, endocrinal or blood circulation diseases (e.g., Raynaud's disease)
- Having personal or first-degree relatives' history of diagnosed psychiatric disorders (according to the criteria of the Diagnostic and Statistical Manual of Mental Disorders - DSM5)
- Having psychotic prodomes measured by a score above 6 in the "prodomal questionnaire' - PQ-16 (Ising et al., 2012)
- Having developed musical abilities (that is, regularly practicing a musical instrument)
- Being pregnant or nursing
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: active stress group
20 healthy subjects will be subject to the active condition of a standardized stress protocol
|
The MAST is a standardized stress protocol combining a 5 min preparation phase and 10 min acute stress phase.
The last phase is composed by an alternation of physical and psychosocial stressors.
In the active condition, participants have to switch between immersion of the hand into cold water and complex mental arithmetic operations.
|
Placebo Comparator: placebo stress group
20 healthy subjects will be subject to the placebo condition of a standardized stress protocol.
|
The MAST is a standardized stress protocol combining a 5 min preparation phase and 10 min acute stress phase.
The last phase is composed by an alternation of physical and psychosocial stressors.
In the placebo condition, participants have to switch between immersion of the hand into tempered water and simple mental arithmetic counts.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Reality-monitoring performances
Time Frame: within 1 hour after the stress procedure
|
scores obtained at the reality-monitoring task (accuracy, range 0-100%)
|
within 1 hour after the stress procedure
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
electroencephalogram (EEG) activity
Time Frame: 1time within 1 hour after the stress procedure
|
EEG activity recorded at rest (spectral power) and during reality-monitoring task
|
1time within 1 hour after the stress procedure
|
Working memory
Time Frame: 1 time within 1 hour after the stress procedure
|
scores at the n-back task (expressed as % of good responses)
|
1 time within 1 hour after the stress procedure
|
Basic auditory performances
Time Frame: 1 time within 1 hour after the stress procedure
|
scores at the Tone Matching Task (expressed as % of good responses)
|
1 time within 1 hour after the stress procedure
|
Salivary cortisol
Time Frame: throughout and within 1 hour after the stress procedure
|
Salivary cortisol (in µg/L)
|
throughout and within 1 hour after the stress procedure
|
Blood pressure
Time Frame: throughout and within 1 hour after the stress procedure
|
blood pressure (both systolic and diastolic, in mmHg)
|
throughout and within 1 hour after the stress procedure
|
Heart rate
Time Frame: throughout and within 1 hour after the stress procedure
|
Heart rate (in beats per minute)
|
throughout and within 1 hour after the stress procedure
|
expression rate of genes involved in the regulation of the glucocorticoid receptor signaling pathway
Time Frame: 1 time before and 1 time 1 hour after the stress procedure
|
The expression rate of genes of the glucocorticoid receptor signaling pathway (NR3C1, FKBP4, HSP90, HSP70, FKBP5, BAG1, PTGES3)
|
1 time before and 1 time 1 hour after the stress procedure
|
Subjective stress
Time Frame: 1 time before and 1 time 1 hour after the stress procedure
|
Subjective stress assessed with the STAI-YA (scores between 20 and 80)
|
1 time before and 1 time 1 hour after the stress procedure
|
Psychometric characteristics that may influence stress response (1)
Time Frame: Basline, before the stress procedure
|
Scores at the 16-item Prodromal Questionnaire (PQ-16), ranging between 0 and 16 (higher scores indicate higher psychotic risks).
|
Basline, before the stress procedure
|
Psychometric characteristics that may influence stress response (2)
Time Frame: Basline, before the stress procedure
|
Scores at the Childhood Trauma Questionnaire (CTQ), between 28 and 140 (higher scores indicate higher trauma exposure)
|
Basline, before the stress procedure
|
Psychometric characteristics that may influence stress response (3)
Time Frame: Basline, before the stress procedure
|
State Trait Anxiety Inventory (form B) scores between 40 and 160 20 and 80 (STAI-YB) between 20 and 80 (higher scores indicate higher state anxiety)
|
Basline, before the stress procedure
|
Psychometric characteristics that may influence stress response (4)
Time Frame: Basline, before the stress procedure
|
Scores at the Schizotypal Personality Questionnaire (SPQ), between 0 and 74 (higher scores indicate higher schizotypal traits)
|
Basline, before the stress procedure
|
Psychometric characteristics that may influence stress response (5)
Time Frame: Basline, before the stress procedure
|
Scores at the Launay-Slade Hallucinations Scale (LSHS), between 0 and 64 (higher scores indicate a greater likelihood of experiencing hallucinations)
|
Basline, before the stress procedure
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Mondino Marine, PhD, hospital le Vinatier
Study record dates
Study Major Dates
Study Start (Estimated)
Primary Completion (Estimated)
Study Completion (Estimated)
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
Keywords
Other Study ID Numbers
- 2022-A01390-43
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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