Measuring Time Windows in Patients With Schizophrenia and Healthy Controls

Completed

• Conditions: Schizophrenia

• Registration Number: NCT00350805
• Lead Sponsor: University Hospital, Strasbourg, France

Brief Summary

Abnormalities in the ability to distinguish events in time may have a great impact on everyday life. The main objective of the study is to evaluate the magnitude of the temporal windows in schizophrenia, i.e. the time interval during which two events are perceived as synchronous. The investigators test the hypothesis that these temporal windows are enlarged, and check the relationship between this impairment and disorganization symptoms, in order to explore the link between this cognitive impairment and clinical symptoms. They explore also the neurobiological bases of the impairment by means of electroencephalogram (EEG) recordings. Event-related potentials (N50) will reveal whether or not the coding of the stimuli has the same temporal characteristics in patients and controls. The distribution and amplitude of oscillatory activities will be analyzed as a function of the synchronous or asynchronous response of the subject, thus allowing to explore the links between synchrony perception and neuronal synchronization phenomena.

Detailed Description

Not available

Study Timeline

• Study Start: 2005-09
• Study First Submitted: 2006-07-10
• Study First Submitted QC: 2006-07-10
• Study First Posted: 2006-07-11
• Primary Completion: 2012-04
• Study Completion: 2012-12
• Status Verified: 2017-09
• Last Update Submitted: 2017-10-04
• Last Update Posted: 2017-10-05

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 126

Inclusion Criteria

• Patients with schizophrenia (DSM-IV criteria)
• Healthy controls matched with patients on age, sex and education level
• Age between 18 and 50
• Informed consent signed
• No severe somatic illness
• No invalidating sensory disease
• No drug abuse, as defined by DSM-IV criteria
• No general anesthesia in the past 3 months
• No intake of drug affecting the CNS, except for patients

Exclusion Criteria

Not provided

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Trial Locations

Locations (3)

Service de Psychiatrie Adulte & INSERM U841, Hôpital Albert Chenevier et Henri Mondor (AP-HP); 🇫🇷 Créteil, France

Centre Hospitalier de Rouffach; 🇫🇷 Rouffach, France

INSERM U666 - Département de Psychiatrie - Hôpitaux Universitaires de Strasbourg; 🇫🇷 Strasbourg, France