Involuntary Memories Investigation in Schizophrenia

NCT ID: NCT03209778

Last Updated: 2021-09-20

Basic Information

• Recruitment Status: TERMINATED
• Clinical Phase: NA
• Total Enrollment: 65 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2017-09-29
• Study Completion Date: 2019-12-15

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.

Conditions

Schizophrenia

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: HEALTH_SERVICES_RESEARCH
• Blinding Strategy: NONE

Study Groups

Control group

Control participants without psychiatric nor neurological history

Group Type: ACTIVE_COMPARATOR

Patients with Schizophrenia

Intervention Type: OTHER

Patients with schizophrenia or schizoaffective disorder according to DSM-V criteria

Patients with Schizophrenia

Patients with schizophrenia or schizoaffective disorder according to DSM-V criteria

Group Type: EXPERIMENTAL

Patients with Schizophrenia

Intervention Type: OTHER

Patients with schizophrenia or schizoaffective disorder according to DSM-V criteria

Interventions

Patients with Schizophrenia

Patients with schizophrenia or schizoaffective disorder according to DSM-V criteria

Intervention Type: OTHER

Eligibility Criteria

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

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 55 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

University Hospital, Strasbourg, France

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

Les Hôpitaux Universitaires

Strasbourg, , France

Countries

France

Other Identifiers

6620

Identifier Type: -

Identifier Source: org_study_id