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

International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology
V B StreletsJ V Golikova

Abstract

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.

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Citations

May 24, 2003·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·John H Gruzelier
Oct 29, 2003·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·V StreletsD Lehmann
Jun 27, 2008·The Behavioral and Brain Sciences·Bernard Crespi, Christopher Badcock
May 4, 2005·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Luis F CerdánJulieta Ramos-Loyo
Jun 22, 2010·Neuroscience·T MedkourV B Strelets
Feb 23, 2013·Clinical Schizophrenia & Related Psychoses·Nash N BoutrosRajiv Tandon
Jun 20, 2006·Neuroscience and Behavioral Physiology·V B StreletsR A Magomedov

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