Physiological and Medico-Social Research Trends of the Wave P300 and More Late Components of Visual Event-Related Potentials

Lytaev, Sergey; Vatamaniuk, Irina

doi:10.3390/brainsci11010125

Cited by 14 publications

(5 citation statements)

References 32 publications

(34 reference statements)

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“…During the initial assessment, a judgment is formed about the significance of the event as stressful, positive, controlled, provocative or inadequate, followed by an assessment of one’s resources and survival opportunities. The secondary assessment is the activation of memory processes about a potential reaction to a threat and its being overcome as a process of fulfilling this reaction [ 12 , 13 ].…”

Section: Discussionmentioning

confidence: 99%

“…Thus, we perceive stress factors both directly through sensory systems and indirectly through chains of stress responses. Sensory systems are an information channel that is evaluated by physical and neurophysiological parameters [ 12 , 13 ]. Known vegetative chains of stress reactions, as a rule, are assessed using indirect parameters—vegetative, energy and hormonal, as well as by using psychological testing batteries [ 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

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Psychological and Neurophysiological Screening Investigation of the Collective and Personal Stress Resilience

Lytaev

2023

Behavioral Sciences

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Methodological approaches to assess the human cognitive status are constantly evolving. At the same time, the creation of new assessment methods is accompanied by traditional research. This paper discusses the direction of research on the search for markers of stress resilience. The basis for the formation of the research algorithm was the assessment of activation factors of emotional states, including preceding stress–sensory (cognitive and informational) and psycho-emotional factors. This was determined using methodological techniques, stress factors, working conditions in professional teams, etc. For an express analysis (25–40 min) of diagnosing stress resistance, a research algorithm was justified, consisting of clinical and psychological testing, as well as EEG with traditional tests and analysis of indicators and spectra. Therefore, this research was aimed at the psychological and neurophysiological substantiation of approaches to express algorithms for assessing cognitive functions and resilience to stress under time deficit. A study on 102 healthy subjects and 38 outpatients of a neuropsychiatric clinic was performed. Basic outcomes: the integrative indicator SCL-90-R—”general index of severity” has a high statistical significance (p < 0.05) in both healthy subjects and neuropsychiatric outpatients. The effectiveness of the Mini-Mult test in conditions of time deficit is determined by the results of the scales of hypochondria, depression, hysteria, paranoia, psychasthenia, schizoid and hypomania (p < 0.05). Furthermore, we used a line of logical thinking techniques. A line of four logical methods is highly informative in assessing the mental status in conditions of time deficit. EEG power indices and spectra in theta, delta and alpha frequency ranges are an effective reflection of cognitive status. In this article, a testing algorithm as a variant for assessing neurocognitive status in screening studies of large groups is discussed.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Psychological and Neurophysiological Screening Investigation of the Collective and Personal Stress Resilience

Lytaev

2023

Behavioral Sciences

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“…You need to memorize them and, after the end of the study, submit a report on the figures that you memorized.” The use of dual images-illusions as a model made it possible, on the one hand, to fix all three possible answers (1: not a single figure was identified; 2: one figure was identified; and 3: everything) and, on the other hand, on this basis, to fix relatively homogeneous groups for mathematical analysis. A stepwise discriminant analysis was carried out in comparison with the data of a control group of healthy subjects, where ERP registration was performed in response to a traditionally recognized visual image (key fragments) [ 8 ].…”

Section: Methodsmentioning

confidence: 99%

“…There is a mismatch in cognitive psychology and neuroscience, which we consider to be the main criterion for understanding, namely surprise. For example, in a series of studies on insight, the authors do not specifically highlight decisions that have arisen suddenly [ 6 , 7 , 8 ]. Another widespread use of the term “insight” can be found in clinical psychology, where understanding refers to self-awareness, often personal symptoms, functional impairment, or other types of foresight.…”

Section: Introductionmentioning

confidence: 99%

Long-Latency Event-Related Potentials (300–1000 ms) of the Visual Insight

Lytaev

2022

Sensors

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The line of insight research methods that have high temporal and surface resolution is not large—these are EEGs, EPs, and fMRI, as well as their combinations and various options for assessing temporal events of random understanding. The objective of this research was to study the classification of insight for visual illusory images consisting of several objects simultaneously according to the analysis of early, middle, late, and ultra-late components (up to 1000 ms) of event-related potentials (ERPs). ERP research on 42 healthy subjects (men) aged 20–28 years was performed. The stimuli were a line of visual images with an incomplete set of signs, as well as images-illusions, which, with different perceptions, represent different images. The results showed the similarity of the tests to correct recognition of fragments of unrecognition and double images. At the intermediate stage of perception (100–200 ms), in both cases, the activity of the central and frontal cortex decreased, mainly in the left hemisphere. At the later stages of information processing (300–500 ms), the temporal-parietal and occipital brain parts on the right were activated, with the difference that when double objects were perceived, this process expanded to 700–800 ms with the activation of the central and occipital fields of the right hemisphere. Outcomes allowed discussing two possible options for actualizing the mechanisms of long-term memory that ensure the formation of insight—the simultaneous perception of images as part of an illusion. The first of them is associated with the inhibition of the frontal cortex at the stage of synthesis of information flows, with the subsequent activation of the occipital brain parts. The second variant is traditional and manifests itself in the activation of the frontal brain areas, with the subsequent excitation of all brain fields by the mechanisms of exhaustive search.

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“…The largest positive wave occurring at about 300 ms to 500 ms and whose amplitude of approximately 4-12 µv was related to the probability of the stimulus. 2 The P300 is related to cognition and the use of knowledge about the environment. It may be bifocal, having "a" and "b" components.…”

Section: Introductionmentioning

confidence: 99%

Effect of hearing loss on P300 measures

Shubhadarshan,

Gaiwale

2024

Int J Otorhinolaryngol Head Neck Surg

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Background: P300 is among the first auditory responses in a collection of event-related or endogenous evoked responses. Hearing loss has drastically reduced cognitive abilities in individual adults. P300 is used as an electrophysiological tool to assess cognitive functions. This study was framed to compare the effect of hearing loss in P300 amplitude and latencies in Indian population. As no such study was carried out in Indian population, this study will be helpful in evaluating the correlation between hearing loss and cognitive function. Methods: We recruited a total of 60 participants out of which 30 were in group 1 having normal hearing and other 30 were included in group 2 having hearing loss. P300 was obtained using a Neurosoft instrument using tone burst stimuli The acquisition of tonal stimuli was carried out in a sound-treated room. Results: The t test value (t=4.75, p<0.001) for P300 amplitude indicates that the difference between the mean among normal hearing and hearing-impaired adult was statistically significant. But the p=0.68 for P300 latency which indicates that the difference between the two groups is not statistically significant, which accepts hypothesis that There would not exist any relationship of P300 latency in normal hearing- and hearing-impaired adults. Pearson's correlation was found that hearing loss and amplitude of P300 has a strong negative correlation and latency of P300 has a poor positive correlation with hearing loss. Conclusions: Hearing loss affects the P300 measures. Due to hearing loss cognitive decline occurs which results in reduced amplitude and prolonged latency in P300.

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Physiological and Medico-Social Research Trends of the Wave P300 and More Late Components of Visual Event-Related Potentials

Cited by 14 publications

References 32 publications

Psychological and Neurophysiological Screening Investigation of the Collective and Personal Stress Resilience

Psychological and Neurophysiological Screening Investigation of the Collective and Personal Stress Resilience

Long-Latency Event-Related Potentials (300–1000 ms) of the Visual Insight

Effect of hearing loss on P300 measures

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