RU2722056C1 - Diagnostic technique of paraphilic disorders with application of eye tracking - Google Patents

Abstract

FIELD: medicine.SUBSTANCE: invention refers to medicine, particularly to general psychiatry and sexology, namely to forensic psychiatric examination. Patient is exposed to a series of visual erotic stimuli within a single-format visual test aimed at detecting paedophilic disorders or disorders of an aggressive-sadistic circle. Evaluating the tentative research eye behaviour and activation of the sympathetic nervous system by recording four physiological processes: saccade activity, fixation activity, blinking and pupil diameter changes. That is followed by expert analysis of the obtained data by viewing a video recording of saccades for evaluating the visual perception of the stimulus material. Thereafter, the statistical differences of the physiological responses obtained by presenting a standard and deviant paedophilic or sadistic stimulus are compared by using parametric and nonparametric methods of statistical analysis. Then, for the released stimulus, at least 5 significant parameters are selected, which are normalized and logistic regression analysis of normalized values is performed. At the same time those reactions are considered to be statistically significant, the probability of which is equal to or exceeds 0.95.EFFECT: method provides more accurate diagnosis of paraphilic disorders.1 cl, 5 dwg, 4 tbl, 2 ex

Description

A method for the diagnosis of paraphilic disorders using eye tracking

The invention relates to medicine, in particular to general psychiatry and sexology, namely, forensic psychiatric examination. The method according to the invention allows the diagnosis of paraphilic disorders in cases of installation behavior or simulation.

Known methods for the diagnosis of paraphilic disorders, which include registering changes in certain psychophysiological parameters that occur in response to the presentation of sexual stimuli. When using these methods for the diagnosis of paraphilic disorders, the following psychophysiological parameters are recorded: a galvanic skin reaction, cardiovascular reaction, respiration, motor activity, speech reactions, etc. (Abrams S. Polygraph and the pedophile. 1995, January 7. Lecture, Dallas; Card RD & Farrall WR, Advancements in Physiological Evaluation of Assessment and Treatment of the Sexual Aggressor. Annals New York Academy of Sciences. 1990, p. 261- 273).

There is also a method for diagnosing disorders of sexual preferences for an object, which consists in the fact that the test subject is presented with an anxiety test using sound signals and two types of preference questionnaires by sex and age of the sex drive, while simultaneously recording parameters: chest breathing, diaphragmatic breathing , skin-galvanic reactions, cardiovascular reactions, motor activity, speech reactions (RU 2215474 C2, A61B 5/16, 11/10/2003).

Another method for diagnosing violations of sexual preferences is that the subject is alternately given tests for anxiety level: a test using sound signals and a Leonhard test, verbal stimulation tests for activity and a visual stimulation test, while simultaneously recording the psychophysiological parameters of chest breathing, diaphragmatic breathing , skin-galvanic reactions, cardiovascular reactions, motor activity, speech reactions (RU 2283029 C2, A61B 5/16, 09/10/2006).

Another method for diagnosing sexual preferences disorders is that the subject is presented with an adaptation stimulus test, tests of general control questions, verbal stimulation tests (questionnaires) for activity and age, a threshold visual stimulation test, and a subthreshold visual stimulation test using a masked image. At the same time, the psychophysiological parameters of chest respiration, diaphragmatic respiration, galvanic skin reactions, cardiovascular reactions, motor activity, speech reactions are recorded (RU 2406441 C2, A61B 5/16, 12/20/2010).

Known methods have the following disadvantages: a high percentage of false-positive, false-negative and uncertain answers, as well as a wide range of contraindications for mental disorders, which complicates the objective diagnosis of paraphilic disorders, especially in cases of comorbid mental pathology. In addition, the disadvantage of these methods is the high complexity of time costs and the long training of specialists.

Also known is the neurochemical "Method for the diagnosis of sexual preference disorders", which consists in collecting daily urine from a subject during the day, in which daily excretion of adrenaline is determined, then the next day in the morning a specific visual stimulation test is carried out, after which the collection is repeated daily urine of the patient and determine the daily excretion of adrenaline. With an increase in adrenaline levels of more than 3 times, a sexual preference disorder is diagnosed (RU 2580748 C1, 04/10/2016).

However, this method has a drawback, since an increase in the level of adrenaline is non-specific and can be noted under the influence of any stressful situation, including when exposed to erotic stimulation, in healthy and sick individuals. So, previously, researchers in a group of healthy men and women showed an increase in heart rate, blood pressure, adrenaline, norepinephrine and a decrease in cortisol during or after erotic stimulation (Exton NG, Truong T.S., Exton MS, Wingenfeld SA , Leygraf N., Sailer B., Hartmann U., Schedlowski M. Neuroendocrine response to film-induced sexual arousal in men and women // Psychoneuroendocrinology, 2000, 25 (2), p. 187-99).

Thus, the neurochemical "Method for the diagnosis of disorders of sexual preference" has a low specificity, which does not exclude the appearance of false positive results. In addition, this method may have a number of somatic contraindications in the presence of adrenal diseases and widespread arterial hypertension in the subjects.

Also known is a "Method for the diagnosis of sexual sadistic attraction in men with early organic brain damage" (RU 2105979 C1, G01N 33/48, 02.27.1998), when after a clinical examination in the blood serum of a patient taken from the ulnar vein, the level of testosterone is determined and progesterone, and if the ratio of these levels is 0.7 or less, they diagnose sexual sadistic attraction in men with organic brain damage.

Since the method is addressed to a relatively narrow group of patients — with organic brain damage — its use in clinical and expert practice is limited.

A technical problem that can be solved by implementing the present invention is the objectification of the clinical diagnosis of paraphilic disorders by applying a reliable, simple, highly effective psychophysiological method using innovative eye tracking technology, which involves the presentation of single-format tests and registration of unrecognized uncontrolled processes of eye movement, blinking, and changing pupil diameter , which allows a more differentiated diagnostic assessment of paraphilic disorders.

The technical result of the invention is to improve the accuracy of diagnosis of paraphilic disorders.

The solution of the above technical problem and the obtaining of the claimed technical result are provided in the proposed method for the diagnosis of paraphilic disorders, which consists in the fact that the subject is presented with a series of visual erotic stimuli at least 4 times in the framework of a one-format visual test aimed at identifying pedophilic disorders or disorders of an aggressive-sadistic circle. At the same time, orientational research eye behavior and activation of the sympathetic nervous system are evaluated by recording four physiological processes: saccadic activity (eye movement), fixative activity (fixing the gaze on a fragment of the visual stimulus), blinking, and changes in pupil diameter. Then, an expert analysis of the obtained data is carried out by watching a video of saccades to assess the visual perception of the stimulus material.

To check the statistical differences in physiological reactions obtained upon presentation of normative and deviant (pedophilic or sadistic) stimuli, they are compared using parametric and nonparametric methods of statistical analysis. Then, for the emitted stimulus, at least 5 significant parameters are selected that normalize and carry out logistic regression analysis of normalized values, while those reactions whose probability of release is equal to or greater than 0.95 are considered statistically significant.

Thus, in the inventive method assesses unconscious, uncontrolled (or difficult to control) physiological processes, which impedes the ability of the subject to provide active resistance. In addition, the assessment of these parameters allows you to minimize the influence of comorbid mental pathology (organic mental disorders, personality disorders) and significantly narrow the range of psychiatric contraindications. Moreover, the method is less time-consuming and does not require long-term training of specialists.

The data obtained as a result of the examination are processed by the methods of mathematical statistical analysis. Based on the results obtained, significant psychophysiological parameters are distinguished. The probability of a normative or deviant stimulus in single-format tests is considered significant, if it is equal to or exceeds 0.95, that is, the probability error is equal to or less than 0.05, then the stimulus is considered significant.

The method is based on the presentation of one-format visual tests. At the same time, psychophysiological reactions are recorded in response to the presentation of erotic stimulus tests.

The examinee sits in a chair. They conduct a pre-test conversation, during which they find out brief anamnestic information, assess their mental state, familiarize themselves with instructions for actions during the examination (significant head movements should be avoided and you should not fix your gaze in an empty field), take written consent to the examination.

During the examination, the following tests are presented to the examiner in turn:

1) calibration test;

2) single-format visual for the detection of pedophilic disorder;

3) single-format visual test to identify disorders of the aggressive-sadistic circle;

Depending on the diagnostic tasks set for the researcher, a different set of tests is presented. At the beginning, always present a calibration test to calibrate the equipment. Then one or two single-format visual tests are used to identify pedophilic disorder and / or disorders of the aggressive-sadistic circle.

Before testing, the monitor, on which visual erotic stimuli are presented, is placed at a distance of 60-70 cm from the subject.

A calibration test is presented at the beginning. During the test, the subject fixes his gaze at a point located in the center of the screen. During the test, the point moves on the screen and stops for a short time in an arbitrary place specified by the program. In total, 9 movements are used. The examinee must accurately monitor the movement of the point on the screen and fix his gaze on it at the moment the point stops. During the calibration test, the subject should try not to blink. Special equipment located on the bottom of the monitor, which consists of two infrared cameras, tracks eye movements. In the case of a successful test, the deviation of the gaze of the subject from four preset markers located in four places on the screen (top left and bottom, top right and bottom) should not exceed 0.51 degrees.

The purpose of the calibration test is to adjust the infrared cameras so that they most accurately record physiological processes.

Next, use a one-format visual test. These tests are constructed using the “Test Questions” methodology developed by J. Reid (Reid, J.E. A revised questioning technique in lie-detection tests. Journal of Criminal Law and Criminology, 1947, 37, 542-547). One-format visual tests contain neutral, regulatory, and deviant stimuli. Neutral stimulus - landscape, regulatory (control) stimuli - visual erotic stimuli with the image of a woman. Deviant (relevant) stimuli - visual erotic stimuli with the image of children or related women.

The one-format visual test included 4 sets of visual stimuli with 7 visual stimuli each. The same visual stimuli are presented in each set, that is, the stimulus material is repeatedly presented repeatedly. The exposure time of each visual stimulus is 15 seconds. A larger number of sets can be used, but preferably not less than 4, which is necessary for a more accurate mathematical statistical analysis.

Thus, the structure of the one-format visual test is as follows: H-K1-P1-P2-P3-P4-K2, where H is the neutral stimulus, K is the control stimulus, and P is the relevant stimulus. Visual stimuli are presented either on the right or on the left side of the screen to avoid the influence of the lateral phenotype on the test results. Between visual stimuli, a background image with a central fixation point is presented.

In FIG. 1 shows a fragment of a set of stimuli, where 0 is a neutral stimulus (presentation time 15000 ms), 1 is a fixation point (presentation time 3000 ms), 2 is an erotic stimulus (presentation time 15000 ms), 3 is a fixation point (presentation time 3000 ms) .

Before presenting single-format visual tests, the subject is given the following instructions: “During the examination, you will be presented with erotic and neutral images that you should carefully review when assessing the gender, age, and sexual attractiveness of the people you see. At the beginning of the test, you should fix your gaze on the center point. Then a neutral or erotic image will be presented, which should be carefully considered. After the image disappears, a dot appears again in the center of the screen. Once again you must fix your gaze at this point. And so on, throughout the examination. I repeat once again that you should carefully look at the images, evaluating the gender, age and sexual attractiveness of people. ”

After testing is completed, the leading eye is evaluated using a Rosenbach test. To do this, the subject is given a pencil in an outstretched hand and offered to aim, without squinting his eyes, at a distant object. Then they alternately cover their eyes, offering to adjust the scope. When adjusting the sight, the subject slightly displaces his hand with a pencil. That eye, at the closure of which the displacement of the hand was the greatest, is the leading one.

After the examination, the analysis of the data obtained by the leading eye is carried out. Neutral stimuli are necessary to eliminate the orienting reflex at the beginning of the study, therefore, reactions to them are not taken into account. Only data are analyzed for control and relevant stimuli.

The analysis consists of several stages.

First step. An expert qualitative visual assessment of the recorded data is carried out. In the beginning, stocks from infrared cameras analyze the features of saccades when viewing visual stimuli. The sequence of studying an erotic object in three zones is evaluated: face, chest, genital area.

Second phase. A quantitative statistical analysis of the data is carried out. The program provides an analysis of 70 parameters that reflect 4 basic physiological processes: saccades, fixation, blinking, changes in pupil diameter.

The following parameters should be analyzed for each visual stimulus presented:

- saccades: amplitude, peak speed, peak acceleration, peak braking of saccades, number and latent time of saccades, repeated visit to the area of an erotic object, entry time;

- fixations in the area of an erotic object: total and average duration of fixations, total viewing time, number of fixations, long first fixation, variance of fixations;

- pupil: change in pupil diameter;

- blinks: total, maximum, minimum, average duration of blinks, number of blinks.

For some parameters, the program provides averaged values, for another part of parameters - a series of events for each parameter during the entire time a visual stimulus is presented.

First, parameters are analyzed that include a number of events, namely: amplitude, peak speed, peak acceleration, peak braking of saccades, changes in pupil diameter.

To do this, for each parameter, a series of data is compared, obtained upon presentation of a control and relevant stimulus. For comparison, I use the student criterion.

The obtained average values for each parameter are entered in the summary table, where the significance of the differences, if any, is indicated.

The third stage. Quantitative statistical analysis for averaged parameters. Analyze the rest of the above parameters, averaged using the program over 4 sets (the number and latent time of saccades, repeated visits to the area of an erotic object, entry time, total and average duration of fixations, number of fixations, long first fixation, variance of fixation, total, maximum , minimum, average duration of blinks, number of blinks). At the beginning, the values are averaged over all sets for each parameter. The obtained average values for each parameter are entered in the pivot table.

Then, the parameters obtained upon presentation of the normative and deviant stimulus are compared. For comparison, the nonparametric Wilcoxon test is used, and not Student's test, since the number of values for each parameter is only 4 (by the number of sets) and it is not possible to assess the normal distribution of values. Significant differences are indicated in the table.

Due to the fact that the number of values averaged by the program for each parameter is small, this is not always sufficient to identify statistical differences even using the Wilcoxon criterion.

For a more detailed analysis, only part of the averaged parameters is selected. Parameter values entered in the summary table (number and latent time of saccades, repeated visits to the area of an erotic object, entry time, total and average duration of fixations, number of fixations, long first fixation, variance of fixations, total, maximum, minimum, average duration of blinks, number of blinks ) compare between normative and deviant incentives.

The parameter reflects the significance of the visual stimulus presented to the subject, if it assumes the maximum or minimum value on it. The following indicates when the parameter should be considered significant:

количество саккад - максимальное значение,

the number of saccades is the maximum value,

латентное время саккад - минимальное значение,

saccade latent time - the minimum value,

повторное посещение области эротического объекта - минимальное значение,

repeated visit to the area of the erotic object - the minimum value,

время входа - минимальное значение,

entry time - minimum value

общая продолжительность просмотра - максимальное значение,

total viewing time - maximum value,

общая продолжительность фиксаций - максимальное значение,

total duration of fixations - maximum value,

средняя продолжительность фиксаций - максимальное значение,

average duration of fixations - maximum value,

количество фиксаций - максимальное значение,

number of fixations - maximum value,

продолжительной первой фиксации - максимальное значение,

long first fix - the maximum value,

дисперсия фиксации - минимальное значение,

fixation variance is the minimum value

общая продолжительность морганий - минимальное значение,

total blinking duration - minimum value,

максимальная продолжительность морганий - минимальное значение,

maximum blinking duration - the minimum value,

минимальная продолжительность морганий - минимальное значение,

minimum blinking duration - minimum value,

средняя продолжительность морганий - минимальное значение,

the average duration of blinks is the minimum value,

количество морганий - минимальное значение,

the number of blinks - the minimum value,

As a rule, 5-10 significant parameters are allocated for only one stimulus: normative or deviant. For further analysis, it is enough to select at least 5 significant parameters.

The fourth stage. Next, averaging and normalization of parameter values for each set over five selected parameters occurs.

The fifth stage. Testing the significance of the stimulus through logistic regression. The stimulus, distinguished by 5 parameters, by all 5 significant normalized parameters obtained at the previous stage of analysis, is assigned the value “1” for each set, all other normalized values by visual stimuli for each parameter in each set are assigned the value “0”.

Those normalized parameters that are significant at their minimum value are multiplied by the inversion coefficient, which is “-1”.

Subsequently, a logistic regression analysis is performed between discrete values and quantitative data on parameters. A stimulus is considered significant if the communication probability error is equal to or less than 0.05, that is, the stimulus is considered significant when the probability of its allocation is 0.95 or higher.

When all parameters are analyzed, prepare a conclusion that describes the purpose of the examination, its methodology, presented one-format visual tests, the applied analysis methods. A summary table is prepared based on the results obtained, indicating the significance of differences. Enter the results of the stimulus significance check obtained by means of logistic regression, and provide a regression analysis graph indicating the probability of error. Describe the nature of viewing visual stimuli. The summary part reflects the data obtained during the analysis.

After these operations, it is possible to judge the presence or absence of disorders of sexual preference with a high degree of probability.

The method is illustrated by examples, tables and figures.

Example 1. Podekspertny I., born in 1974, using the method of clinical sexological interviewing, was diagnosed with “Heterosexual pedophilia (F65.4 - according to ICD-10)”.

The examinee sits down in a chair, conducts a pre-test conversation, during which they find out brief anamnestic information, assess his mental state, familiarize himself with instructions regarding actions during the examination, and take written consent to the examination.

A monitor is placed in front of the subject at a distance of 60-70 cm, so that the eyes fixed by infrared cameras are located approximately in the central part of the screen.

In FIG. Figure 2 shows an example of the location of the monitor in front of the subject (the bottom right shows the distance from the monitor to the eyes of the subject - 66 cm, two white ovals - the location of the gaze in the center of the screen).

The following tests are presented alternately:

1. calibration test;

2. One-format visual test by age.

During the calibration test, the subject fixes his gaze at a point located in the center of the screen. The point moves on the screen and stops for a short time in an arbitrary place specified by the program. In total, 9 movements are used. The examinee must accurately monitor the movement of the point on the screen and fix his gaze on it at the moment the point stops.

The result of the calibration test is shown in FIG. 3. The combination of red and gray dots indicates a successful test. The deviation along the X and Y axes does not exceed 0.39 degrees.

Before presenting a single-format visual test by age, give the instruction written above.

The one-format visual test by age includes neutral, two regulatory visual stimuli (heterosexual stimuli) and 4 deviant ones (2 heterosexual pedophilic and 2 homosexual pedophilic).

After the survey is completed, data analysis is carried out according to the following algorithm.

1. Watch a video of saccades for each visual stimulus and record the sequence of study of zones (face, chest, genital area).

1.1. When viewing a heterosexual pedophilic stimulus in subject I., its study begins with the chest or genital area, then the subject proceeds to study the face area. Saccades are located mainly in the chest and genitals. This indicates a sexualized and partially depersonalized (depersonalized) perception of the image of the child, characteristic of persons with pedophilia.

1.2. When viewing a heterosexual stimulus, its study begins with the chest or genital area, then the subject proceeds to study the facial zone. However, unlike the presentation of pedophilic stimuli, saccades are located mainly in the chest and neck, which indicates a personalized perception of the image of a woman.

2. Conduct a quantitative statistical analysis of the data. In summary table 1, the averaged values of parameters are placed (in table 1, for illustrative purposes, a part of heterosexual and pedophilic stimuli is presented, between which statistical differences were found at p≤0.05; the differences are marked with “*”).

As can be seen from table 1, when viewing a pedophilic stimulus, a smaller amplitude, peak speed and acceleration of saccades are noted, which indicates a point-by-point viewing of the image, and not an attempt to cover it as a whole, as is observed normally. These data indicate a fragmented perception of the image of the child.

3. Highlight significant parameters (that is, taking the maximum or minimum value for one stimulus) according to the averaged values that are presented in table 2 (for clarity, some of the stimuli are presented). Significant parameters are highlighted in bold and underlined.

As can be seen from table 2, predominantly significant parameters were found for a heterosexual pedophilic stimulus, while for a heterosexual stimulus, these are single parameters. For further analysis, it is enough to take 5 significant parameters. Preference should be given to those parameters that are not amenable to conscious control: entry time, average duration of fixations, dispersion of saccades, average duration of blinks. Additionally, the total duration of fixations can be included. Although this parameter lends itself to conscious control, however, in this case, it differs significantly when presenting deviant stimuli.

4. Normalize the selected parameters.

5. Test the hypothesis of the significance of the stimulus through logistic regression. In FIG. 4 shows a regression plot indicating the probability of error. Thus, the hypothesis of the significance of the stimulus is confirmed. The probability of error is 0.00003, i.e., the probability of the significance of the stimulus is 0.99997.

6. Prepare a conclusion. The summarizing part of the conclusion is as follows: “With visual stimulation, significant changes are detected in the orientational-research behavior upon presentation of a heterosexual pedophilic stimulus, which indicates its significance. In addition, there is a sexualized, partially depersonalized and fragmented perception of a heterosexual pedophilic stimulus. ”

Thus, according to the study, it is possible to speak with a high degree of probability of the presence of heterosexual pedophilia in the subject, which is correlated with clinical data.

Example 2. To an expert K., born in 1986, using the method of clinical sexological interviewing, he was diagnosed with paraphilia of an aggressive-sadistic circle: "Raptophilia (F65.8 - according to ICD-10)."

The examinee sits down in a chair, conducts a pre-test conversation, during which they find out brief anamnestic information, assess his mental state, familiarize himself with instructions regarding actions during the examination, and take written consent to the examination.

A monitor is placed in front of the subject at a distance of 60-70 cm, so that the eyes fixed by infrared cameras are located approximately in the central part of the screen.

The following tests are presented alternately:

1. calibration test;

2. One-format visual activity test.

During the calibration test, the subject fixes his gaze at a point located in the center of the screen. The point moves on the screen and stops for a short time in an arbitrary place specified by the program. In total, 9 movements are used. The examinee must accurately monitor the movement of the point on the screen and fix his gaze on it at the moment the point stops.

Before presenting a single-format visual activity test, instructions are given.

A one-dimensional visual activity test includes neutral, three regulatory visual stimuli (heterosexual stimuli) and 2 deviant ones (sadistic stimuli - images of related women).

After the survey is completed, data analysis is carried out according to the following algorithm.

1. Watch a video of saccades for each visual stimulus and record the sequence of study of zones (face, chest, genital area).

1.1. When viewing a heterosexual regulatory stimulus in subject K., his study begins from the chest area, then the subject proceeds to study the facial area, and lastly, the genitals.

1.2. When viewing a sadistic stimulus, its study begins with the genital area, then the subject proceeds to study the area of the chest and face. Saccades are located mainly in the chest and genital area. This indicates a sexualized and partially depersonalized (depersonalized) perception of the image of a woman.

2. Conduct a quantitative statistical analysis of the data. In summary table 3, the average parameter values are placed (in table 3, for illustrative purposes, a part of heterosexual and sadistic stimuli is presented, between which statistical differences were found at p≤0.05; the differences are marked with “*”).

As can be seen from table 3, when viewing a sadistic stimulus, a smaller amplitude, peak saccade speed is noted, which indicates a point-wise viewing of the image, and not an attempt to cover it as a whole, as is observed normally. These data indicate a fragmented perception of the image of a woman and a detailed analysis of the photograph in these fragments. Also, upon presentation of a sadistic stimulus, a significant expansion of the pupil is noted, which indicates the activation of the sympathetic system and sexual attractiveness for the examined indicated stimulus.

3. Highlight significant parameters (that is, taking the maximum or minimum value for one stimulus) according to the average values that are presented in table 4 (for clarity, a part of heterosexual and sadistic stimuli is presented). Significant parameters are highlighted in bold and underlined.

As can be seen from the table, predominantly significant parameters were found for the sadistic stimulus, while for the heterosexual stimulus, these are single parameters. For analysis, it is enough to take 5 significant parameters: the total duration of viewing the photo, the duration of the first fixation, the total duration of fixations, the average duration of fixations, the ratio of the duration of fixations to the duration of saccades.

4. Conduct normalization of these parameters.

5. Test the hypothesis of the significance of the stimulus through logistic regression. In FIG. Figure 5 shows a regression plot indicating the probability of error. Thus, the hypothesis of the significance of the stimulus is confirmed. The probability of error is 0.00000, that is, the probability of the significance of the stimulus is close to 1.0.

6. Prepare a conclusion. The summarizing part of the conclusion is as follows: “With visual stimulation, significant changes in the orientational-research behavior and activation of the sympathetic system upon presentation of a sadistic stimulus are detected, which indicates its significance. In addition, there is a sexualized, depersonalized and fragmented perception of the image of a woman. ”

Thus, according to the study, it is possible to speak with a high degree of probability of the presence of sadism in the subject, which correlates with clinical data.

Claims (1)

A method for the diagnosis of paraphilic disorders, namely, that the subject is presented with a series of visual erotic stimuli at least 4 times in the framework of a one-format visual test aimed at identifying pedophilic disorders or disorders of the aggressive-sadistic circle, while orientational research eye behavior and activation are evaluated of the sympathetic nervous system by registering four physiological processes: saccadic activity, fixative activity, blinking and changes in pupil diameter, then an expert analysis of the obtained data is carried out by watching a video of saccades to assess the visual perception of stimulus material, then to check the statistical differences in physiological reactions obtained with presentation of a normative and deviant: pedophilic or sadistic stimulus, they are compared using parametric and nonparametric methods of statistical analysis, then For the selected stimulus, at least 5 significant parameters are selected that normalize and carry out logistic regression analysis of normalized values, while those reactions whose probability of release is equal to or greater than 0.95 are considered statistically significant.

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