=Paper=
{{Paper
|id=Vol-2753/paper45
|storemode=property
|title=Specification of Information Technology for Non Invasive Prediction and Correction of Functional State of Human in Complex Conditions
|pdfUrl=https://ceur-ws.org/Vol-2753/short16.pdf
|volume=Vol-2753
|authors=Bohdan Yavorskyy,Myhaylo Bachynskyi
|dblpUrl=https://dblp.org/rec/conf/iddm/YavorskyyB20
}}
==Specification of Information Technology for Non Invasive Prediction and Correction of Functional State of Human in Complex Conditions==
https://ceur-ws.org/Vol-2753/short16.pdf
Specification of Information Technology
for Non Invasive Prediction and Correction
of Functional State of Human in Complex Conditions
Myhaylo Bachynskyi, Bohdan Yavorskyy
Ternopil Ivan Pul’uj National Technical University, Ruska 56, Ternopil, 46001, Ukraine
Abstract
This article is devoted to the development of information technology (IT) in the field of
information aspects of low-intensity light stimulation (haptic stimulation). This is important
for the control and correction of the functional state of the human body, which operates in
extreme environmental conditions. Theoretical and experimental relationships between
stimulation energy (diode light radiation) and energy transmitted through layered
bioenvironments, responses of body systems are specified as data for design, synthesis of IT
for prediction and correction of changes in the human condition. A generalize representation
of the light stimulation process is described. With the aid of experiments and
electroencephalograms, as response signals on to the stimulus, the principles of the decision
to control and correction the functional state of human can be prognosis. The specifications
of methods of prediction, statistical modeling (for the prediction and testing), and the
approaches to the formation of the IT are stated.
Keywords 1
Information technology, haptic stimulation, organism functional state prediction
1. Introduction
The article presents a method of analysis of information processes in medical and biological
systems of a human working in extreme environmental conditions. The theory of medical information
systems (MIS) and the specification, based on the theory of MIS, information aspects of haptic
stimulation of the body with light to control and correct the functional state of the organism, allowed
to develop and study relevant information technology [1]. According to the results of the
specification, the information technology of stabilization of the temporarily disturbed functional state
of the human is created. It is proposed to use ultra-low levels of stimulation intensity with non-
invasive devices to monitor the state of the human organism’s and support decisions about the need to
recover - for a limited time to recognize and correct the functional state of emotional and cognitive
health.
2. Problem Statement
Control-correction technology contains a set of operations:
1. Control - stimulation-response-analysis-decision (if the health in norm, then continue to
control);
IDDM’2020: 3rd International Conference on Informatics & Data-Driven Medicine, November 19–21, 2020, Växjö, Sweden
EMAIL: m.bachynskyi@gmail.com (M. Bachynskyi); biotehnic0@gmail.com (B. Yavorskyy)
ORCID: 0000-0003-4139-7633 (M. Bachynskyi); 0000-0003-4215-1176 (B. Yavorskyy)
© 2020 Copyright for this paper by its authors.
Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).
CEUR Workshop Proceedings (CEUR-WS.org)
2. Selection of correction mode;
3. Corrective direct, or auxiliary stimulation;
4. Control - if the norm, then go to (1), otherwise go to (2).
This set of operations is used in the diagnosis and therapy of existing light stimulation systems [2],
But not in an autonomous, automatic, working mode of information technology. In autonomous
special working conditions, a significant factor is the need for prognostic control, which will
significantly reduce the time complexity of the correction and increase the duration of the working
condition of the person. The obtained response potential to stimulation (electrical phenomenon with
variable "parameters": amplitude, frequency, duration of the latent period, etc.) and its systematic
interpretation appear as a tool for neurophysiological analysis of subcortical interactions, which
allows to assess the upward excitation of subcortical formations.
Discovery of the contradictions between
data of the interception and concept of psychophysics (that sensory function is associated with
the sensation when stimulating receptor [2, 3]),
detection, that interceptive irritation does not cause a sensation [4],
electrophysiological method,
and all these together, reliably assesses: the interceptive function of the interceptive system is
considered as afferent association of vegetative nervous system.
The interceptor is similar to the skin receptor. Afferent pathways derived from these receptors are
quite complex. Most pulses of visceral receptors are directed to the central nervous system. Afferent
impulses of the interceptor often come to the nucleus of the thalamus of the ventral element
(important switching station). The cortical representation of the internal retention is found in the
sensorimotor cortex, as well as in the limbic region, located on the medial hidden surface of the
cerebral hemispheres. The presence of this central representation explains why intercepting stimuli do
not evoke feelings, although they often affect human behavior.
The interceptors of all types fulfil two main functions: they form an affine connection of the
special vegetative reflexes, which play an important role in maintaining the homeostasis in the body,
and, by sending information about the state of the internal organs, affect the state of the central
nervous system. Specificity of interceptors regarding types of physical energy is questionable. EEG is
used to study the afferents. Tracked the changes due to desynchronization of EEG (alpha rhythm of
rest). Selected the potentials from the cortex areas. These, painless irritations make no sense. This
shows that intra-receptor impulses really reach the brain and alter the electrical activity of some
cortical neurons. There are two types of afferent nerve mechanisms, namely, conscious and
unconscious activity, in people; interceptive impulses remain in the sphere of the unconscious. Since
sensory receptors are found throughout the body, including the skin, the experiment is performed to
study the sensation (touch), proprioception, and haptic perception (associated with the concept of
extended physiological prorioception) of light as an instrument [5, 6].
Research objective: the specification the information technology of implementation of the concept
of extended physiological proprioception by light stimulation as a tool for recognition of a working
human, which temporarily came to such a state that after this can be lose the ability to continue
working.
A result of this goal: an alternative information channel suitable for the extraction of information
and method of its use (the noninvasive, rapid detection of signals, prediction and correction of the
state at little complexity of wearable system).
3. Informational Technology of Bioobject State Estimation
Information technology (IT) what based on mobile devices was created for obtaining alternative
information about necessaries control, or correction of the human state. They implements replacing
pure the medical technologies of the control or correction of the state by parts or completely technical
means. One of this direction is based on the extraction and stimulation of information by the
appropriate IT, which influent and obtain information through biologically active points (BAP), or
alternative information channels of human. In case stimulation, a BAP use to be information
sources — of response of organism that are carries information from the organism, or stimulus, which
carries information in to the organism. Thus, there are two sorts of stimulus the control and correction
of organism state. The statistics evaluation of the response of the bioobject, the automation of the
assessment, feedback on the determined of the organism the state of as a norm are the main
operations of IT, Figure (1, 2).
Figure 1: Method of determining of necessary the correction. PDF — probability density function of
human the response on haptic stimulation of human which is working at special circumstances; ROC
- receiver operating characteristic (for decision making estimation). The probability density function
of the human response on haptic stimulation at usual circumstances estimated a priori.
Figure 2. Diagram of the information technology of controlling and correction of functional state of
human which are working at special circumstances.
4. Specification of Information Technology for Influent and Obtain
Information Through BAP
On fig. 3 is the result of the EEG experiment (a man, 33 years old, without neurological and other
diseases, in a position sitting with his eyes closed in a dark room, at rest, the big fingers of both hands
are superimposed on the LEDs). The electroencephalograms (is recorded 15000 values - initially
without stimulation (7500 values of 20 the lead’s potentials), and with stimulation by pulses Sst of
1.9 × 10-6 W / m2, at a frequency of 2 Hz, of the red color (the remaining values, up to 15000). Second
order digital filtering (frequency of discretization f d 500 Hz ) with bandwidth f f 2 f1 = (13-
8) Hz and the quality Q f o / f =2.5, was used for selection - waves. For recording, the EEG used
an electroencephalograph system NEUROCOM [7, 8].
Figure 3. View of the variability of the potential along time on the 10-nd lead: without stimulus (0-
7500 samplings ), and with stimulus (7501-15000 samplings). Coordinate scales in conditionals units.
Single sided amplitude spectrum of potential (Figure 3) is given on to Figure 4:
Figure 4. Amplitude spectrum without stimulating.
Diagram of the amplitudes of the spectrum (Figure 4) in diapason of α-waves, i.e. (8-13) Hz, is
given on to Figure 5:
Figure 5. Lines of α- waves spectral frequencies in diapason of spectrum on Figure 4 which
amplitudes of spectral lines are bigger √2/2 of max amplitude.
Analogical to Figures 4-5, on to Figures 6-7 are given band’s spectrums (8-13) Hz, these received
after stimulation.
Figure 6. Amplitude spectrum after stimulation.
Figure 7. Spectral frequency lines of α- waves with amplitudes larger of √2/2 of max amplitude of
spectrum on Figure 6.
The all leads spectrum diagram (α-waves human diagram) presented on to Figure 8, this relate to
10th lead, before stimulation (Figure 4-5).
Figure 8. Amplitude spectra of α-waves vs encephalography leads (the human functional state
pattern) without stimulus.
The experiment showed:
the lack of a feeling of low-intensity stimulation and its effect on the body's condition;
the appearance of the effect from stimulation of the organism in its functional systems.
This indicates:
existing potential prognosis of the detection of changes in the functional state of a human
who works in special conditions;
the possibility of statistical studies of the functional state in the "norm" and under special
conditions.
Due to physiology properties of bio objects [9, 10, 11, 12], and by experimental researches were
stated that energy S of potential on the lead of the electroencephalogram after impulse stimulation of
BAP are exponentially decreasing:
S S0 exp S st , (1)
where S0 — “dark room energy” of alpha-wave, Sst — energy of light stimulation. After the LED
impulse light stimulation of the big fingers of both hands was coefficient a determining by formula
(ln S0 ln S ) / Sst . (2)
The stimulation energy Sst =1.9·10-6W/m of LED is determining by photometer, as well as by
calculations, which including times parameters of LED and pulse.
On to Figure 9 is given function S(Sst), which builds by points from S= S0 |S st 0 , and
S= S0 |S 1.9106 , and formula (1).
st
Figure 9. Energy spectrum of α-waves vs light stimulus.
The results of the experiment confirmed:
the lack of a feeling of low-intensity stimulation and its effect on the body's condition;
the apparent appearance of the effect of this stimulation on the functional systems of the
organism.
This indicates:
the potential prognosis of the detection of changes in the functional state of a person who
works in special conditions;
the possibility of statistical studies of the functional state in the "norm" and under special
conditions.
5. Conclusion
The article presents the solution of the actual problem of alternative support for people in whom
the functional state is temporarily begin decreasing. The following scientific specifications are
obtained for methods:
1. detect information by a haptic stimulation by light;
2. develop of prediction the functional state decreasing that most often occur after the special
environmental condition appeared;
3. develop IT that implements human support with the use its existing properties, which is
achieved by control and correction using mobile and auxiliary devices.
Using the proposed information system of alternative communication significantly increases the
level of defense of human in special environment conditions, improves the quality of sustaining,
develops self-stability and gives the opportunity to feel like a personality.
The specifications of the problem of controlling and correcting the state of the human organism in
the extreme conditions of its life give to obtain:
• requirements to the functions and structure of the body's stimulation system with the light;
• calculation formulas for representing the functional blocks of the organism system;
• the method of recursive determination of the intensity of the light flux after each layer of the
biological environment;
• decrease computational complexity of testing and automated haptic control and correction of
the body's condition;
• conditions to confirm the statistical significance of representative samples of the body's
responses to haptic stimulation of it through biologically active points.
6. References
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