scholarly journals THE USE OF LOW-FREQUENCY SIGNALS REMOVED FROM THE HUMAN CEREBRAL CORTEX TREATED BY THE WAVELET BY THE DOBESHA TRANSFORM

2021 ◽  
Author(s):  
A. Yagodkin ◽  
V. Tuinov ◽  
V. Lavlinskiy ◽  
Yu. Tabakov
Keyword(s):  
Cerebral Cortex ◽  
Wavelet Transform ◽  
Low Frequency ◽  
Audio Signals ◽  
Human Cerebral Cortex

The article presents the results of a study on the possibility of using the Daubechy wavelet transform for processing low-frequency signals taken from the cerebral cortex. The advantages of using the Daubechy wavelet transform for audio signals with natural interference are given.

PROCESSING OF LF SIGNAL WITH THE USE OF LOW-PASS FILTER AND WAVELET OF DAUBECHIES

10.12737/7910 ◽  
2015 ◽  
Vol 7 (4) ◽  
pp. 44-48
Author(s):  
Буров ◽  
R. Burov ◽  
Табаков ◽  
Yu. Tabakov ◽  
Лавлинский ◽  
...  
Keyword(s):  
Cerebral Cortex ◽  
Wavelet Transform ◽  
Low Frequency ◽  
Human Cerebral Cortex ◽  
Frequency Signal ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Mathematical Algorithm ◽  
Damping Coefficients ◽  
Low Pass

The article describes the functionality of the low-pass filter with the calculated optimum damping coefficients of noise in the signal. The block for diagram and the appearance of the board for removing for low-frequency signals of human cerebral cortex. The mathematical algorithm low-frequency signal processing frequency of 10-40 Hz using wavelet transform Daubechies and low-pass filter.

METHOD AND ALGORITHM PROCESSING FOR LF SIGNALS WITH DAUBECHIES WAVELETS

10.12737/6680 ◽  
2014 ◽  
Vol 7 (3) ◽  
pp. 42-45 ◽  
Author(s):  
Табаков ◽  
Yu. Tabakov ◽  
Лавлинский ◽  
V. Lavlinskiy ◽  
Бибиков ◽  
...  
Keyword(s):  
Signal Processing ◽  
Cerebral Cortex ◽  
Low Frequency ◽  
Human Cerebral Cortex ◽  
Daubechies Wavelets ◽  
Frequency Signal ◽  
Sign Algorithm

In this paper the method most suitable for existing low-frequency signal processing removed from the human cerebral cortex and sign algorithm, built on the basis of Daubechies wavelets

C-fos, ERK1/2, MAP2, NOTCH1 Proteins Expression Patterns in Human Cerebral Cortex Neurons after Ischemic Stroke

2020 ◽  
Vol 75 (3) ◽  
pp. 226-233
Author(s):  
Svetlana P. Sergeeva ◽  
Aleksey V. Lyundup ◽  
Valery V. Beregovykh ◽  
Petr F. Litvitskiy ◽  
Aleksey A. Savin ◽  
...  
Keyword(s):  
Cerebral Cortex ◽  
Ischemic Stroke ◽  
Expression Patterns ◽  
Immunohistochemical Method ◽  
Left Middle Cerebral Artery ◽  
Contralateral Hemisphere ◽  
Human Cerebral Cortex ◽  
Fos Protein ◽  
Urgent Task ◽  
Indirect Immunoperoxidase

Background. The search for protein (these include c-fos, ERK1/2, MAP2, NOTCH1) expression that provide neuroplasticity mechanisms of the cerebral cortex after ischemic stroke (IS) patterns is an urgent task. Aims to reveal c-fos, ERK1/2, MAP2, NOTCH1 proteins expression patterns in human cerebral cortex neurons after IS. Materials and methods. We studied 9 left middle cerebral artery (LMCA) IS patients cerebral cortex samples from 3 zones: 1 the zone adjacent to the necrotic tissue focus; 2 zone remote from the previous one by 47 cm; 3 zone of the contralateral hemisphere, symmetric to the IS focus. Control samples were obtained from 3 accident died people. Identification of targeted proteins NSE, c-fos, ERK1/2, MAP2, NOTCH1 was performed by indirect immunoperoxidase immunohistochemical method. Results. Moving away from the ischemic focus, there is an increase in the density of neurons and a decrease in the damaged neurons proportion, the largest share of c-fos protein positive neurons in zone 2, NOTCH1 positive neurons in zone 1, smaller fractions of ERK1/2 and MAP2 positive neurons compared to the control only in samples of zone 1. Conclusions. With the IS development, the contralateral hemisphere is intact tissue increased activation zone, while the zones 1 and 2 have pathological activation signs. In zone 1 of the range, the adaptive response of the tissue decreases, and in zone 2 it expands. Therefore, a key target for therapeutic intervention is zone 2.

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