scholarly journals Experimental Diagnostics of the Emotional State of Individuals Using External Stimuli and a Model of Neurocognitive Brain Activity

Diagnostics ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 125
Author(s):  
Alexandr Y. Petukhov ◽  
Sofia A. Polevaya ◽  
Anna V. Polevaya
Keyword(s):  
Emotional State ◽  
Brain Activity ◽  
Human Mind ◽  
One Dimensional ◽  
Experimental Scheme ◽  
The Subject ◽  
Audiovisual Stimuli ◽  
External Stimuli ◽  
Internal Potential ◽  
Experimental Diagnostics

In this paper, we study ways and methods to diagnose the emotional state of individuals using external audiovisual stimuli and heart telemetry tools. We apply a mathematical model of neurocognitive brain activity developed specifically for this study to interpret the experimental scheme and its results. This experimental technique is based on monitoring and analyzing the dynamics of heart rate variability (HRV), taking into account the particular context and events occurring around the subject of the study. In addition, we provide a brief description of the theory of information images/representations used for the paradigm and interpretation of the experiment. For this study, we viewed the human mind as a one-dimensional potential hole with finite walls of different sizes and an internal potential barrier modeling the border between consciousness and subconsciousness. We also provided the foundations of the mathematical apparatus for this particular view. This experiment allowed us to identify the characteristic markers of influencing external stimuli, which form a foundation for diagnosing the emotional state of an individual.

scholarly journals Smart Bracelet for Emotional Enhancement in Children with Autism Spectrum Disorder

2021 ◽  
Vol 7 (1) ◽  
pp. 7
Author(s):  
Alba Ortolan-Soto ◽  
Juan A. Castro-García ◽  
Alberto J. Molina-Cantero ◽  
Manuel Merino-Monge ◽  
Isabel M. Gómez-González
Keyword(s):  
Autism Spectrum Disorder ◽  
Emotional State ◽  
Electrodermal Activity ◽  
Children With Autism ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Medical Studies ◽  
The Subject ◽  
Self Knowledge ◽  
External Stimuli

People with autism spectrum disorder (ASD) have great difficulties in social interaction and in the management of personal and other people’s emotions. This work aimed at developing an intelligent bracelet, capable of inferring the children’s emotional state, transmitting it to others, and, above all, informing the patients themselves so that they can learn to recognise, control, and work with, as well as to improve their self-knowledge and their relationship with their environment. Electrodermal activity (EDA) and photoplethysmography (PPG) are useful in combined psychophysiological and medical studies to determine the mood of patients. Due to COVID-19, no experiments with subjects could be carried out, although the modules were validated, and a public database was used to test the system’s application. The results concluded that, in general, when an individual is altered or becomes nervous, either positively or negatively (also known as valence) to a stimulus, their heart rate and sweating increase. This is the kind of relationship between physiological signals and external stimuli that the design of these circuits was intended to confirm. Finally, with the indicators of nervous system activity and knowing the behaviour of skin conductance in response to each basic emotion, it can be determined whether the subject is in a situation of pleasure or frustration in response to each reaction.

Using BCI and EEG to process and analyze driver’s brain activity signals during VR simulation

2021 ◽  
Vol 60 (4) ◽  
pp. 137-153
Author(s):  
Mirosław Nader ◽  
Ilona Jacyna-Gołda ◽  
Stanisław Nader ◽  
Karol Nehring
Keyword(s):  
Virtual Reality ◽  
Brain Activity ◽  
Age Groups ◽  
Functional Model ◽  
Flow Simulation ◽  
Human Mind ◽  
Pilot Studies ◽  
Computer Interfaces ◽  
External Stimuli ◽  
Electroencephalogram Eeg

The use of popular brain–computer interfaces (BCI) to analyze signals and the behavior of brain activity is a very current problem that is often undertaken in various aspects by many researchers. This comparison turns out to be particularly useful when studying the flows of information and signals in the human-machine-environment system, especially in the field of transportation sciences. This article presents the results of a pilot study of driver behavior with the use of a proprietary simulator based on Virtual Reality technology. The study uses the technology of studying signals emitted by the human mind and its specific zones in response to given environmental factors. A solution based on virtual reality with the limitation of external stimuli emitted by the real world was proposed, and computational analysis of the obtained data was performed. The research focused on traffic situations and how they affect the subject. The test was attended by representatives of various age groups, both with and without a driving license. This study presents an original functional model of a research stand in VR technology that we designed and built. Testing in VR conditions allows to limit the influence of undesirable external stimuli that may distort the results of readings. At the same time, it increases the range of road events that can be simulated without generating any risk for the participant. In the presented studies, the BCI was used to assess the driver's behavior, which allows for the activity of selected brain waves of the examined person to be registered. Electroencephalogram (EEG) was used to study the activity of brain and its response to stimuli coming from the Virtual Reality created environment. Electrical activity detection is possible thanks to the use of electrodes placed on the skin in selected areas of the skull. The structure of the proprietary test-stand for signal and information flow simulation tests, which allows for the selection of measured signals and the method of parameter recording, is presented. An important part of this study is the presentation of the results of pilot studies obtained in the course of real research on the behavior of a car driver.

An Adaptive and Learning System for Feedback-Controlled Evoked Response Studies

1981 ◽  
Vol 20 (03) ◽  
pp. 169-173
Author(s):  
J. Wagner ◽  
G. Pfurtscheixer
Keyword(s):  
Brain Activity ◽  
Evoked Response ◽  
Learning System ◽  
Time Interval ◽  
Electrical Brain Activity ◽  
Long Time ◽  
The Subject ◽  
Eeg Power ◽  
Stimulation System ◽  
Background Eeg

The shape, latency and amplitude of changes in electrical brain activity related to a stimulus (Evoked Potential) depend both on the stimulus parameters and on the background EEG at the time of stimulation. An adaptive, learnable stimulation system is introduced, whereby the subject is stimulated (e.g. with light), whenever the EEG power is subthreshold and minimal. Additionally, the system is conceived in such a way that a certain number of stimuli could be given within a particular time interval. Related to this time criterion, the threshold specific for each subject is calculated at the beginning of the experiment (preprocessing) and adapted to the EEG power during the processing mode because of long-time fluctuations and trends in the EEG. The process of adaptation is directed by a table which contains the necessary correction numbers for the threshold. Experiences of the stimulation system are reflected in an automatic correction of this table. Because the corrected and improved table is stored after each experiment and is used as the starting table for the next experiment, the system >learns<. The system introduced here can be used both for evoked response studies and for alpha-feedback experiments.

scholarly journals Mind-wandering Is Accompanied by Both Local Sleep and Enhanced Processes of Spatial Attention Allocation

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Christian Wienke ◽  
Mandy V Bartsch ◽  
Lena Vogelgesang ◽  
Christoph Reichert ◽  
Hermann Hinrichs ◽  
...  
Keyword(s):  
Search Task ◽  
Brain Activity ◽  
Target Selection ◽  
Mind Wandering ◽  
Attentional Selection ◽  
Self Report ◽  
Cortical Processing ◽  
High Frequency Activity ◽  
External Stimuli ◽  
Local Sleep

Abstract Mind-wandering (MW) is a subjective, cognitive phenomenon, in which thoughts move away from the task toward an internal train of thoughts, possibly during phases of neuronal sleep-like activity (local sleep, LS). MW decreases cortical processing of external stimuli and is assumed to decouple attention from the external world. Here, we directly tested how indicators of LS, cortical processing, and attentional selection change in a pop-out visual search task during phases of MW. Participants’ brain activity was recorded using magnetoencephalography, MW was assessed via self-report using randomly interspersed probes. As expected, the performance decreased under MW. Consistent with the occurrence of LS, MW was accompanied by a decrease in high-frequency activity (HFA, 80–150 Hz) and an increase in slow wave activity (SWA, 1–6 Hz). In contrast, visual attentional selection as indexed by the N2pc component was enhanced during MW with the N2pc amplitude being directly linked to participants’ performance. This observation clearly contradicts accounts of attentional decoupling that would predict a decrease in attention-related responses to external stimuli during MW. Together, our results suggest that MW occurs during phases of LS with processes of attentional target selection being upregulated, potentially to compensate for the mental distraction during MW.

scholarly journals XXXI.—On the Limits of our Knowledge respecting the Theory of Parallels

1864 ◽  
Vol 23 (3) ◽  
pp. 433-450
Author(s):  
Kelland
Keyword(s):  
Human Mind ◽  
Practical Application ◽  
Very Old ◽  
Metaphysical Problem ◽  
Pure Logic ◽  
History Of ◽  
The Subject ◽  
The Right ◽  
Negative Conclusion ◽  
Positive Results

The subject of this paper is a very old one, and may to many appear to be sufficiently worn; but I venture to hope, that there are some to whom a glimpse of the successive approaches of the human mind towards the right understanding of a question of pure logic, may have an interest,—even although the problem solved be an abstract one, and the conclusion a negative conclusion, having little practical application. Like the kindred problem of the quadrature of the circle, or the metaphysical problem of “Knowing and Being,” the theory of parallels has been attacked in various directions, and although it is true that no one ever reached the goal he aimed at, yet it is not the less certain that great and positive results have followed in the history of human attainment. If no other lesson has been learnt, this at least may have been: that in reasoning it is necessary to look warily around and abroad at every step, seeing that admissions, the most obviously inadmissible, or evasions the most palpable, have foiled generations of thinkers, whilst those who have detected their errors have fallen into others of an equally destructive character.

scholarly journals Explicit Numerical Solution of High - Dimensional Advection - Diffusion

2013 ◽  
Vol 2 (3) ◽  
pp. 17-22
Author(s):  
Elham Bayatmanesh
Keyword(s):  
High Dimensional ◽  
Numerical Techniques ◽  
Science And Engineering ◽  
Numerical Examples ◽  
One Dimensional ◽  
Advection Diffusion Equation ◽  
Advection Diffusion ◽  
Constant Coefficients ◽  
The Subject ◽  
The One

The Several numerical techniques have been developed and compared for solving the one-dimensional and three-dimentional advection-diffusion equation with constant coefficients. the subject has played very important roles to fluid dynamics as well as many other field of science and engineering. In this article, we will be presenting the of n-dimentional and we neglect the numerical examples.

scholarly journals INFLUENCE OF COGNITIVE DYSONANCE ON THE FORMATION OF THE LANGUAGE SYSTEM

2019 ◽  
pp. 70-78
Author(s):  
T. Krech ◽  
I. Milyeva
Keyword(s):  
Cognitive Dissonance ◽  
Human Mind ◽  
Communication Process ◽  
Psychological Reality ◽  
Language System ◽  
The Subject ◽  
The Many

The language system is susceptible to the many changes that occur in society and the consciousness of its members. Language units can be motivated by taboos – a phenomenon that causes a person to abandon the use of some language units and replace them with others that are more suitable for this communicative situation. Such a replacement is due to mental rejection, emotional discomfort, in fact, cognitive dissonance, which is born as a result of various objective and subjective factors. The presence in the human mind of a fideistic attitude to the word is a psychological reality. Therefore, the use of replacement words as a result of a certain mental discomfort has become the subject of research not only for linguists, but also for scientists who deal with issues of culture, religion, ethnography, and especially psychology. Some sources that we used to write an article are not so much of a linguistic nature, but rather of a psycholinguistic one. At the same time, scientists note that consciously or unconsciously, but a person always feels a greater role of associative connections between a word and a named subject. The purpose of the article is to study language units motivated by ancient remnants, and to determine the role of euphemisms in the communication process. It is these “soft” expressions that make speech more pleasant, one that protects the psyche and aesthetic feelings of a person.

scholarly journals Image of Motherland: Justification and Approbation of Diagnostic Tools

2020 ◽  
Vol 13 (4) ◽  
pp. 205-219
Author(s):  
M.V. Tarasov
Keyword(s):  
Human Mind ◽  
The State ◽  
Research Interest ◽  
Diagnostic Tools ◽  
Nature And Culture ◽  
First Case ◽  
The Status ◽  
Patriotic Education ◽  
Education Today ◽  
The Subject

The topic of patriotic consciousness and patriotic education today claims to the status of a nationwide idea, so the research interest in this issue is unusually high. The study of patriotic consciousness should begin with an analysis of the subject which the patriotic feelings of citizens are directed on. This subject is the motherland and its image in the minds of citizens. The article gives an overview of the data, which is used for the semantic deferential method «Image of Motherland» and the procedure of studying of the image of the Motherland based on this method. The sample was 165 respondents. Based on the results obtained, it is concluded that the use of this methodology is a tool, which lets us to determine social ideas about the image of the Motherland. It has been proved that the image of the Motherland in consciousness reflects the ideas about the country and the state in which the respondents were born and raised, it is not associated with a so-called “Small homeland”, but with a certain commonality of territory, nature and culture. There is reason to believe that the image of the Motherland in the human mind can be viewed as an image “for oneself” and an image “for others”: in the first case, the Motherland is perceived as big and strong, interesting for life and comfortable, simple and cultural; Motherland “for others” is bold and friendly, strong and kind.

scholarly journals Shame – an emotionally complex condition with social connotation and psychosomatic implications in pathology

2016 ◽  
Vol 11 (4) ◽  
pp. 306-310
Author(s):  
Simona GROSSMAN ◽  
◽  
Ioan-Bradu IAMANDESCU ◽  
Keyword(s):  
Mental Health ◽  
Emotional State ◽  
Negative Emotion ◽  
Future Research ◽  
Ideal Self ◽  
Self Image ◽  
Complex Condition ◽  
The Subject ◽  
Psychosomatic Diseases

Shame is a complex emotional state, a universal experience, whose influence can be extensive. Elusive by its nature, shame can escape the attention of specialists. Discussions on shame as a separate and distinct emotion are rare, most often being denied, hidden or concealed by more socially acceptable emotions. Offspring of a disappointed Ideal Self, shame reflects on Self Respect and Self Image, both important and influential components of the psyche, with major implications in personality. Being a strong negative emotion, shame can have an important and quite extensive influence on mental health through its numerous somatic correlates intensely and widely expressed at different organic level on somatovisceral activity – thus, resulting in the appearance of numerous disorders and psychosomatic diseases – among them obesity, which was chosen by the author as the subject of a future research.

On approach to determine the internal potential and gravitational energy of ellipsoid

2021 ◽  
Vol 8 (3) ◽  
pp. 359-367
Author(s):  
М. M. Fys ◽  
◽  
А. M. Brydun ◽  
М. I. Yurkiv ◽  
◽  
...  
Keyword(s):  
Distribution Function ◽  
Mass Distribution ◽  
Special Form ◽  
Iterative Process ◽  
Three Dimensional ◽  
Gravitational Energy ◽  
One Dimensional ◽  
Piecewise Continuous ◽  
The Masses ◽  
Internal Potential

Formulas are derived for the calculation of the potential of bodies, which surface is a sphere or an ellipsoid, and the distribution function has a special form: a piecewise continuous one-dimensional function and a three-dimensional mass distribution. For each of these cases, formulas to calculate both external and internal potentials are derived. With their help, further the expressions are given for calculation of the potential (gravitational) energy of the masses of such bodies and their corresponding distributions. For spherical bodies, the exact and approximate relations for determining the energy are provided, which makes it possible to compare the iterative process and the possibility of its application to an ellipsoid. The described technique has been tested by a specific numerical example.

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