Individual symptom as a tool for interpreting the results of psychophysiological research using polygraphs

Ivanov, Roman S.

doi:10.11621/npj.2014.0311

Cited by 2 publications

(2 citation statements)

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“…Это говорит о том, что они могут быть применены для анализа стимулов по субъективной значимости (а возможно, также и по другим характеристикам) в исследованиях прикладной и фундаментальной направленности. При этом в работе не рассматривалась проблематика индивидуальных паттернов реагирования (симптомокомплексов) [4], однако в дальнейшем может быть перспективен переход к индивидуальному уровню с учетом паттернов реагирования [23].…”

Section: выводыunclassified

“…В криминалистической практике выявлен и используется на практике феномен индивидуальных паттернов реагирования (симптомокомплекс) [4]. В данной работе эта проблематика не рассматривается -стоит задача поиска универсальных параметров обработки, применимых в качестве базовых для групповой обработки данных в когнитивных исследованиях.…”

Section: Introductionunclassified

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Optimization of Signal Processing Parameters in Psychophysiological Studies on the Example of GSR and PPG

Malakhov,

Orlov,

Kartashov

et al. 2023

Experimental Psychology (Russia)

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<p>When analyzing physiological signals, the problem of setting data processing parameters arises due to the blurring of the boundary between signal and noise properties, as well as the fundamental lack of objective criteria for the quality of data processing in psychophysiology. This paper describes an approach to optimizing processing parameters on the example of galvanic skin response (GSR) and photoplethysmogram (PPG), based on the use of stimuli that are significant for a person, selected on the basis of biographical data, which can be considered as criteria validation. As a metric for the optimization, we used the frequency of coincidence of the stimuli identified as a result of the analysis with the a priori given ones (human names, including the name of the volunteer, and also visit cards selected by the volunteer). GSR and PPG signals were recorded using an MRI-compatible polygraph under conditions of functional magnetic resonance imaging (N=46 volunteers). In the first part of the work, optimization of frequency filters and analysis intervals (epochs) was performed. It has been established that the following processing parameters are optimal for analyzing the amplitude properties of the GSR signal: first-order Butterworth filters, frequency range is 0.025-0.25 Hz, interval of analysisis1-7 s from a stimulus. To analyze the PPG signal using the length of the curve, the following processing parameters are optimal: second-order Butterworth filters, frequency range is 1.25—12.5 Hz, interval of analysis is 3—10 s from a stimulus. Using the same criterion, several alternative signal processing methods were tested: change in the amplitude of the GSR signal over the analysis interval compared to the classical method by the amplitude maximum relative to the baseline; several types of ranking of reactions within a block of stimuli compared to simple averaging of all responses. The parameters and methods of processing of the GSR and PPG signals obtained in the work demonstrate universality in relation to the variety of initial data and could be applicable in applied and fundamental research. The general approach described in the work can also be used to optimize the processing parameters of other physiological signals including fMRI.</p>

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Section: выводыunclassified

Section: Introductionunclassified

Optimization of Signal Processing Parameters in Psychophysiological Studies on the Example of GSR and PPG

Malakhov,

Orlov,

Kartashov

et al. 2023

Experimental Psychology (Russia)

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Theoretical Model of Polygraph Testing: Concerns and Prospects for their Solution

Купцова

Каменсков²

2020

Psychology and Law

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The problem of determining the constructive validity of the methodology for the mental and physical polygraph testing is currently particularly pressing due to the increased number of such testing procedures in various fields of social life. The possibility of labeling of mental and physical polygraph testing as one of evidence-based methods in investigative and judicial practice partly depends on defining a theoretical model that would be in line with the core scientific foundations and wouldn't contradict experimental data. In this review we are talking about possibility of considering a separate psychic process as an object of mental and physical testing. Criticisms have been cited for the earlier models of interpreting the psychological responses in individuals examined during a polygraph test. We look at the mechanism for the occurrence of physiological reactions during polygraph testing from the standpoint of the theory of functional systems proposed by Pyotr Anokhin. It is assumed that the systemic approach will set the right direction for defining a theoretical grounding of this methodology.

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Individual symptom as a tool for interpreting the results of psychophysiological research using polygraphs

Cited by 2 publications

References 0 publications

Optimization of Signal Processing Parameters in Psychophysiological Studies on the Example of GSR and PPG

Optimization of Signal Processing Parameters in Psychophysiological Studies on the Example of GSR and PPG

Theoretical Model of Polygraph Testing: Concerns and Prospects for their Solution

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