Sensitization, epileptic-like symptoms and local synchronization in patients with paranoid schizophrenia
Language English Country Great Britain, England Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
19878702
DOI
10.1016/j.pnpbp.2009.10.015
PII: S0278-5846(09)00373-X
Knihovny.cz E-resources
- MeSH
- Adult MeSH
- Electroencephalography methods MeSH
- Epilepsy etiology MeSH
- Cortical Synchronization * MeSH
- Humans MeSH
- Young Adult MeSH
- Schizophrenia, Paranoid complications MeSH
- Check Tag
- Adult MeSH
- Humans MeSH
- Young Adult MeSH
- Male MeSH
- Female MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
Recent findings indicate that changes in synchronization of neural activities underlying sensitization and kindling could be more comprehensively understood using nonlinear methods. With this aim we have examined local synchronization using novel measure of coarse-grained information rate (CIR) in 8 EEG signals recorded at different cortical areas in 44 patients with paranoid schizophrenia. The values of local synchronization that could reflect sensitization related changes in EEG activities of cortical sites were then related to psychometric measures of epileptic-like symptoms and positive and negative schizophrenia symptoms (PANSS). While no significant correlations between CIR and positive and negative symptoms have been found, statistically significant relationships described by Spearman correlation coefficients between CIR indices and results of LSCL-33 have been observed in 7 (of 8) EEG channels (r in the range from 0.307 to 0.374, p<0.05). Results of this study provide first supportive evidence for the relationship between local synchronization measured by CIR and epileptic-like symptoms in schizophrenia.
References provided by Crossref.org
Psychosocial Stress, Epileptic-Like Symptoms and Psychotic Experiences
Epileptiform activity in alcohol dependent patients and possibilities of its indirect measurement