EVALUATION OF DYNAMICAL SYSTEMS OF THE BRAIN DURING VISUAL DYSFUNCTIONS ON THE BASIS OF THE KOLMOGOROV-SINAI ENTROPY
Journal Title: Вісник Одеського національного університету. Біологія - Year 2014, Vol 19, Issue 2
Abstract
The study of the effects of visual deprivation in humans, aimed at determining: structural peculiarities of different parts of the brain, character of their interconnections; participation of healthy cortex in processing stimuli of other modalities, was carried out. The examination by magnetic-resonance tomography proved that the brain is characterised by spontaneous fluctuations of activities in the state of quiet wakefulness, having spatial-ordered character in time dimension, which made it possible to separate rest-state network. However, principal structural similarity of basic rest-state networks in the blind and sighted people is noted. The aim of the research was to disclose peculiarities of the brain neurodynamics in case of vision dysfunctions of peripheral genesis under conditions of quiet wakefulness on the basis of Kolmogorov-Sinai entropy. 220 subjects with congenital and acquired vision dysfunctions of peripheral genesis and 125 in fact healthy individuals with the normal vision from 8 to 20 years old were tested. Stable changes of Kolmogoron-Sinai entropy in case of vision dysfunctions in the state of quiet wakefulness with closed eyes, which are manifested in the period of the second childhood and adolescence, are as follows: 1) reduction of the level of randomness in the anterior-temporal cortical area in males with both congenital and acquired vision dysfunctions; 2) increase of the level of randomness in the central parts of convexital surface of the brain in females with acquired vision dysfunctions. The obtained results can be interpreted respectively as the state of increased auditory attention and enhancement of proprioceptive afferentiation processing. From the methodological point of view Kolmogorov-Sinai entropy can extend modern concepts as to the brain plasticity in case of vision deprivation in the context of the neurodynamic system evolution in time.
Authors and Affiliations
I. V. Redka
Keywords
Related Articles
- EP ID EP395917
- DOI -
- Views 65
- Downloads 0
ANTI-INFLAMMATORY ACTIVITY OF IBUPROFEN ESTERS BY TRANSDERMAL DELIVERY
The goal of this study was to investigate the anti-inflammatory activity of ibuprofen esters ointment after their transdermal application on the model of carrageenan-induced inflammation in experimental animals. In this...
EFFECTS OF CHROMOSOMES ELYMUS SIBIRICUS ON AGRONOMICAL TRAITS IN SUPPLEMENTED-DISOMNO LINES OF WINTER WHEAT
There were evaluated the differences between the line and grade «Obriy» created on its base disomno-supplemented line «O27-2», which was bearing the alien signs of resistance to leaf rust and the leaf trichomes on amfipl...
CYTOGENETIC EFFECTS OF FUNGICIDES IN ROOT MERISTEM OF BARLEY
We studied the impact of fungicides a new generation of Amistar Extra`s and Alto Super on plantlets of spring barley. It is shown reliable decrease germinating capacity of seeds all grades proportional to the concentrati...
BLOOD INDICES DYNAMICS OF HORSE OF DIFFERENT AGE UNDER THE ACT OF PHYSICAL ACTIVITY
Researches and analysis of blood clinical and biochemical parameters dynamics of horses of the different age groups under the act of physical activity of various intensity and orientation have been carried out in this wo...
GENOTYPES RECONSTRUCTION AND PEDIGREE ANALYSIS OF GRAPE VARIETIES SEVERNY, ODESSKIY USTOYCHIVIY AND DEKORATIVNIY
Allelic profiles of nine microsatellite loci (VVS2, VVMD5, VVMD7, VVMD25, VVMD27, VVMD28, VVMD32, ZAG79, ZAG62) for six grape varieties bred at National Scientific Center "Tairov Institute of Viticulture and Winemaking"...