Aberrant functional organization in schizophrenia: analysis of EEG coherence during rest and photic stimulation in drug-naive patients.
- Authors
- Wada, Y; Nanbu, Y; Kikuchi, M; Koshino, Y; Hashimoto, T
- Year
- 1998
- Journal
- Neuropsychobiology
- PMID
- 9732204
- DOI
- 10.1159/000026518
EEG coherence provides a measure of functional correlations between two EEG signals. The present study was conducted to examine intrahemispheric EEG coherence at rest and during photic stimulation (PS) in 18 drug-naive patients with paranoid schizophrenia and 30 control subjects. Compared with the controls, the schizophrenic patients had significantly higher intrahemispheric coherence of the resting EEG for the delta band, although no significant group differences were found for other frequency bands. EEG analysis during PS showed that the patients also had significantly higher EEG coherence over the left posterior regions. In this study, we also examined the changes in intrahemispheric coherence from rest to the stimulus condition (i.e., PS-related coherence reactivity); the patients were found to show significantly smaller changes, with significant group differences being also confined to the posterior regions in the left hemisphere. These findings provide evidence that schizophrenic patients have abnormal EEG coherence in both resting and stimulus conditions and suggest more diffuse, undifferentiated functional organization within hemispheres. In addition, diminished coherence reactivity suggests a failure of PS-related functional reorganization in schizophrenia.
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| EEG-based investigation of brain connectivity changes in psychotic patients undergoing the primitive expression form of dance therapy: a methodological pilot study. | Ventouras EC et al. | β | 2015 | β |
| Electroencephalographic connectivity analysis in schizophrenia. | Carlino E et al. | β | 2015 | β |
| Neurophysiological differences between patients clinically at high risk for schizophrenia and neurotypical controls--first steps in development of a biomarker. | Duffy FH et al. | β | 2015 | β |
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| Functionally aberrant electrophysiological cortical connectivities in first episode medication-naive schizophrenics from three psychiatry centers. | Lehmann D et al. | β | 2014 | β |
| Independent component analysis-based method for electroencephalogram analysis during photic stimulation. | Ferreira DD et al. | β | 2014 | β |
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| Adolescent females exposed to child maltreatment exhibit atypical EEG coherence and psychiatric impairment: linking early adversity, the brain, and psychopathology. | Miskovic V et al. | β | 2010 | β |
| Interhemispheric asymmetry in EEG photic driving coherence in childhood autism. | Lazarev VV et al. | β | 2010 | β |
| Spatio-temporal EEG waves in first episode schizophrenia. | Alexander DM et al. | β | 2009 | β |
| Cerebral disconnectivity: an early event in schizophrenia. | BegrΓ© S et al. | β | 2008 | β |
| EEG phase synchronization in patients with paranoid schizophrenia. | Bob P et al. | β | 2008 | β |
| State-dependent changes in intrahemispheric EEG coherence for patients with acute exacerbation of schizophrenia. | Higashima M et al. | β | 2007 | β |
| From genes to brain oscillations: is the visual pathway the epigenetic clue to schizophrenia? | GonzΓ‘lez-HernΓ‘ndez JA et al. | β | 2006 | β |
| Functional clustering in EEG photic and auditory driving in schizophrenia. | Jin SH et al. | β | 2005 | β |
| Perceptional and executive deficits of chronic schizophrenic patients in attentional and intentional tasks. | Frecska E et al. | β | 2004 | β |
| Pathogenesis of schizophrenia: Part II. Temporo-frontal two-step hypothesis. | Kurachi M | β | 2003 | β |
| Schizophrenia, neurodevelopment and corpus callosum. | Innocenti GM et al. | β | 2003 | β |
| Symmetry reversal in schizophrenia. | Kalb R et al. | β | 2003 | β |
| EEG alpha coherence and psychopathological dimensions of schizophrenia. | John JP et al. | β | 2002 | β |
| EEG coherence following acute and chronic clozapine in treatment-resistant schizophrenics. | Knott VJ et al. | β | 2002 | β |
| EEG in schizophrenic patients: mutual information analysis. | Na SH et al. | β | 2002 | β |
| Abnormal EEG patterns in treatment-resistant schizophrenic patients. | Ramos J et al. | β | 2001 | β |
| A statistical technique for measuring synchronism between cortical regions in the EEG during rhythmic stimulation. | Mauricio A et al. | β | 2001 | β |