Cortical connectivity in high frequency beta-rhythm in schizophrenics with positive and negative symptoms

During the last decade the role of high frequency EEG activity in the ‘binding phenomenon’ was discovered. It was supposed that this phenomenon provided the integration between different brain structures underlying higher nervous functions and possibly even consciousness [Proc. Natl. Acad. Sci. 90 (...

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Bibliographic Details
Published in:International journal of psychophysiology 2002-05, Vol.44 (2), p.101-115
Main Authors: Strelets, V.B, Novototsky-Vlasov, V.Y, Golikova, J.V
Format: Article
Language:English
Subjects:
Adult
Asymmetry
Beta Rhythm
Binding phenomenon
Brain Mapping
Cognition
Connectivity
Fourier Analysis
Humans
Male
Middle Aged
Schizophrenia
Schizophrenia - classification
Schizophrenia - physiopathology
Task Performance and Analysis
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Summary:During the last decade the role of high frequency EEG activity in the ‘binding phenomenon’ was discovered. It was supposed that this phenomenon provided the integration between different brain structures underlying higher nervous functions and possibly even consciousness [Proc. Natl. Acad. Sci. 90 (1993) 2078; Annu. Rev. Neurosci. 18 (1995) 555; J. Neurosci. V 16 (1996) 4240; Am. Physiol. Soc. (1998) 1567; Induced Rhythms in the Brain (1992) 425; NeuroReport 8 (1997) 531; Proc. Natl. Acad. Sci. USA 94 (1997) 12198]. Schizophrenia is considered as a disorder of the integration between different brain regions [Review of Psychiatry 18 (1999a) 29; Conceptual Advances in Russian Neuroscience: Complex Brain Functions (1999) 151; Brain Res. Rev. 31 (2000) 301], and in the present work we have studied cortical connectivity, focusing on those connections which are maintained by high frequency EEG-rhythm (20–40 Hz). The results showed a high degree of biopotential synchronisation between definite cortical areas during cognitive processes in normal subjects and have evidenced significant functional connectivity disturbances in schizophrenia in this EEG frequency domain.
ISSN:0167-8760
1872-7697
DOI:10.1016/S0167-8760(01)00196-9