Involuntary Memories Investigation in Schizophrenia

Not Applicable

Terminated

• Conditions: Schizophrenia
• Interventions: Other: Patients with Schizophrenia

• Registration Number: NCT03209778
• Lead Sponsor: University Hospital, Strasbourg, France

Brief Summary

Patients with schizophrenia suffer from autobiographical memory disorders. Patients have difficulty to remember vividly personal past events when they are specifically asked for. Indeed, this task requires a good executive functioning to retrieve precise information stored in long term memory. Interestingly, executive functioning has been showed impaired in schizophrenia and studies showed that their autobiographical memory impairments were directed related to their executive dysfunction.

Yet, in daily life people remember more often autobiographical memories spontaneously, without trying voluntarily to recall them.

In that case, the involuntary recall of personal past events is much less sustained by executive functioning.

In this protocol the investigators would like to investigate and compare subjective characteristics of involuntary and voluntary autobiographical memories in order to highlight the role of executive dysfunction in patients' autobiographical memory impairments.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2017-07-03
• Study First Submitted QC: 2017-07-03
• Study First Posted: 2017-07-06
• Study Start: 2017-09-29
• Primary Completion: 2019-12-15
• Study Completion: 2019-12-15
• Status Verified: 2021-09
• Last Update Submitted: 2021-09-13
• Last Update Posted: 2021-09-20

Recruitment & Eligibility

• Status: TERMINATED
• Sex: All
• Target Recruitment: 65

Inclusion Criteria

• • for patients only
• male or female
• age limits : 18-55 years old
• under the protection of health insurance
• who have signed up the consent form
• schizophrenia or schizo-affective disorder according to the DSM-5 criteria (APA, 2013).
• clinically stable for at least 2 months
• patients under guardianship or curatorship need agreement of their legal representative
• informed of the results of prior medical examination for controls only
• male or female
• age limits : 18-55 years old
• under the protection of health insurance
• who have sign up the consent form
• recruited from the general population and matched on gender, age years of schooling
• no psychiatric history (DSM-5)

Exclusion Criteria

• for both patients and controls
• current severe or unstable somatic illness
• neurological history (brain injury > 15 minutes loss of consciousness , epilepsia, brain surgery...)
• current substance use disorder (DSM-5)
• current major depressive disorder (CDSS,BDI, HDRS)
• mental retardation (IQ < 70, WAIS-4, f-NART)
• history of general anesthesia 3 months prior to the experiment
• pregnancy declared by the subject
• breast feeding
• current legal control
• in emergency situation
• included during exclusion period in another experiment
• for controls only
• taking of antipsychotic drugs for the 3 weeks prior to inclusion
• under guardianship or curatorship

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Patients with Schizophrenia	Patients with Schizophrenia	Patients with schizophrenia or schizoaffective disorder according to DSM-V criteria
Control group	Patients with Schizophrenia	Control participants without psychiatric nor neurological history

Primary Outcome Measures

Name	Time	Method
Autobiographical subjective score taking into account memories vividness and specifity	8 months

Trial Locations

Locations (1)

Les Hôpitaux Universitaires; 🇫🇷 Strasbourg, France