Perceptual Deficits in Schizophrenia

November 3, 2017 updated by: VA Connecticut Healthcare System

Cognitive Remediation for Perceptual Deficits in Schizophrenia

In this study, participants with schizophrenia and schizoaffective are given computer exercises to complete. The goals of the study are to determine whether: 1) any of the computer exercises can improve information processing problems in schizophrenia, 2) improvements in information processing are related to other cognitive improvements, and 3) there are changes in brain activity associated with using the computer exercises.

The study will involve clinical interviews, cognitive tests, and frequent computerized cognitive training over the course of 2 months. Some participants will also have electroencephalography, a non-invasive test that measures brain activity, to determine whether there are changes in brain activity with the computer training.

Study Overview

Status

Unknown

Conditions

Intervention / Treatment

Detailed Description

Schizophrenia is a disabling neurodevelopmental illness, affecting nearly 1% of the population. The disability of schizophrenia is due in large part to the effects of the illness on cognitive faculties. Current medications for schizophrenia do not generally improve cognition, so a major contribution to disability remains undertreated. Computerized cognitive remediation programs, which produce activity-dependent recruitment of neural resources to specifically enhance under-functioning brain systems, have been effective at improving both cognition and community functioning in patients with schizophrenia, but the effects are still modest. Our preliminary work has suggested that our training is associated with improvements in visual memory, though visual memory has been a cognitive area more refractory to cognitive training.

In this study, participants with schizophrenia or schizoaffective disorder will be randomized to receive different computer exercises to help determine whether computer exercises can improve memory in schizophrenia, and whether the cognitive training is associated with changes in neural activity.

Study Type

Interventional

Enrollment (Anticipated)

60

Phase

  • Not Applicable

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

  • United States
    • Connecticut
      • New Haven, Connecticut, United States, 06511
        • Yale University School of Medicine

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 60 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • schizophrenia or schizoaffective disorder
  • English speaking and reading

Exclusion Criteria:

  • current substance abuse
  • visual impairment
  • neurological conditions
  • current enrollment in another research study

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

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Sensory Information Processing Training
Computerized training designed to improve sensory processing
Behavioral: Sensory Information Processing Training
Computer exercises requiring identification of visual stimuli on computer screen and response with keyboard
Active Comparator: Active Control Training
Commercially available computer exercises that were not designed specifically to improve sensory information processing.
Behavioral: Active Control Training
Commercially available educational software

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Cognitive test performance
Time Frame: up to 6 months
Neuropsychological testing
up to 6 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Psychiatric symptoms
Time Frame: up to 6 months
Clinical interviews and ratings
up to 6 months
Social Functioning
Time Frame: up to 6 months
Clinical rating scales
up to 6 months

Collaborators and Investigators

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

Sponsor

VA Connecticut Healthcare System

Collaborators

Brain & Behavior Research Foundation

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.

General Publications

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

August 1, 2014

Primary Completion (Anticipated)

January 1, 2018

Study Completion (Anticipated)

December 1, 2018

Study Registration Dates

First Submitted

January 8, 2015

First Submitted That Met QC Criteria

January 12, 2015

First Posted (Estimate)

January 13, 2015

Study Record Updates

Last Update Posted (Actual)

November 7, 2017

Last Update Submitted That Met QC Criteria

November 3, 2017

Last Verified

November 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • V1CDA2013-24
  • 01856 (Other Identifier: VACHS IRB)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

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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