NDLI: Neurocognitive Performance Stability in a Multiplex Multigenerational Study of Schizophrenia

Content Provider	PubMed Central
Author	Roalf, David R. Gur, Ruben C. Almasy, Laura Richard, Jan Gallagher, R. Sean Prasad, Konasale Wood, Joel Pogue-geile, Michael F. Nimgaonkar, Vishwajit L. Gur, Raquel E.
Copyright Year	2012
Abstract	Certain cognitive measures are heritable and differentiate individuals at risk for schizophrenia from unaffected family members and healthy comparison subjects. These deficits in neurocognitive performance in patients with schizophrenia appear stable in the short-term. However, the duration of most, but not all, longitudinal studies is modest and the majority have relied on traditional average performance measures to examine stability. Using a computerized neurocognitive battery (CNB), we assessed mean performance (accuracy and speed) and intra-individual variability (IIV) in a longitudinal study aimed to examine neurocognitive stability in European-American multiplex families with schizophrenia. Thirty-four patients with schizophrenia, 65 unaffected relatives, and 45 healthy comparison subjects completed the same computerized neurocognitive assessment over approximately 5 years. Measures of mean performance showed that patients had stable accuracy performance but were slower in many neurocognitive domains over time as compared with unaffected family members and healthy subjects. Furthermore, patients and family members showed dissociable patterns of change in IIV for speed across cognitive domains: compared with controls, patients showed higher across-task IIV in performance compared with family members, who showed lower across-task IIV. Patients showed an increase in IIV over time, whereas family members showed a decrease. These findings suggest that measures of mean performance and IIV of speed during a CNB may provide useful information about the genetic susceptibility in schizophrenia.
Related Links	http://dx.doi.org/10.1093/schbul/sbs078
Ending Page	1017
Page Count	10
Starting Page	1008
File Format	PDF
ISSN	05867614
e-ISSN	17451701
Journal	Schizophrenia Bulletin
Issue Number	5
Volume Number	39
Language	English
Publisher	Oxford University Press
Publisher Date	2013-09-01
Access Restriction	Open
Rights Holder	Oxford University Press
Subject Keyword	Psychiatry and Mental health Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Psychiatry and Mental Health

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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