Decreased EEG Complexity in Schizophrenia

July 10, 2014 updated by: Gokben Hizli Sayar, Uskudar University

Decreased EEG Complexity in Chronic Residual Schizophrenia

Aim was to detect EEG complexity in a specific group of patients to contribute to the discussion whether schizophrenia is associated with increased or decreased complexity. We included the EEG recordings of patients with a diagnosis of schizophrenia. We hypothesized that chronic residual schizophrenia is characterized by decreased complexity in EEG.

Study Overview

Status

Completed

Conditions

Detailed Description

Twenty right-handed patients diagnosed with schizophrenia, residual subtype, by two senior psychiatrists according to the Diagnostic Statistical Manual of Mental Disorders 4th Edition (DSM-IV)were recruited from Neuropsychiatry Istanbul Hospital. Only patients scoring 4 or higher on the Clinical Global Impression Scale for Severity (CGI-S) were included. They were assessed with the Turkish version of the Positive and Negative Syndrome Scale. Data was collected with a 16-channel Neuroscan Synamps II (Neuroscan Products, Compumedics, Charlotte, NC, USA), silver-silver chloride electrodes were applied to the scalp surface according to the international 10-20 system

Study Type

Observational

Enrollment (Actual)

40

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Turkey
    • Umraniye
      • Istanbul, Umraniye, Turkey, 34768
        • Uskudar University, NPIstanbul hospital

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 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

diagnosed with schizophrenia,

Description

Inclusion Criteria:

diagnosed with schizophrenia, residual subtype, by two senior psychiatrists according to the Diagnostic Statistical Manual of Mental Disorders 4th Edition (DSM-IV) were recruited from Neuropsychiatry Istanbul Hospital Only patients scoring 4 or higher on the Clinical Global Impression Scale for Severity (CGI-S)

Exclusion Criteria:

-

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

Cohorts and Interventions

Group / Cohort
schizophrenia
patients with a diagnosis of schizohrenia
control
healthy control group

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
the mean of the average Logarithmic Energy Entropy values
Time Frame: one day
one day

Secondary Outcome Measures

Outcome Measure
Time Frame
Hurst Exponent value
Time Frame: one day
one day

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Uskudar University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

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

January 1, 2013

Primary Completion (Actual)

January 1, 2014

Study Completion (Actual)

January 1, 2014

Study Registration Dates

First Submitted

July 9, 2014

First Submitted That Met QC Criteria

July 10, 2014

First Posted (Estimate)

July 11, 2014

Study Record Updates

Last Update Posted (Estimate)

July 11, 2014

Last Update Submitted That Met QC Criteria

July 10, 2014

Last Verified

July 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • GHS001

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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