Methods of masking threatening images and detecting electrophysiological indicators of their unconscious perception

Kharauzov, А.К., Shelepin, Y.E., Tsvetkov О.V., Zhukova, O.V., Pronin, S.P.

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For Russian citation (Opticheskii Zhurnal):

Хараузов А.К., Шелепин Ю.Е., Цветков О.В., Жукова О.В., Пронин С.В. Методы маскировки угрожающих изображений и электрофизиологические маркеры их неосознанного восприятия // Оптический журнал. 2020. Т. 87. № 10. С. 69–80. http://doi.org/10.17586/1023-5086-2020-87-10-69-80

Kharauzov A. K., Shelepin Yu. E., Tsvetkov O. V. , Zhukova O. V. , and Pronin S. V. Methods of masking threatening images and detecting electrophysiological indicators of their unconscious perception [in Russian] // Opticheskii Zhurnal. 2020. V. 87. № 10. P. 69–80. http://doi.org/10.17586/1023-5086-2020-87-10-69-80

For citation (Journal of Optical Technology):

A. K. Kharauzov, Yu. E. Shelepin, O. V. Tsvetkov, O. V. Zhukova, and S. V. Pronin, "Methods of masking threatening images and detecting electrophysiological indicators of their unconscious perception," Journal of Optical Technology. 87(10), 611-618 (2020). https://doi.org/10.1364/JOT.87.000611

Abstract:

This study is devoted to the search for electrophysiological indicators of the human perception of a threat in a complex background target environment. It is shown that the human visual system can distinguish between threatening and nonthreatening stimuli at an unconscious level, and the primary stages of image processing are similar to those during conscious perception. An increase in the amplitude of the positive wave of the evoked potential with a latency period of 320 ms and a decrease in the amplitude of the electroencephalogram rhythms at a frequency of approximately 12 Hz in the range of 350–750 ms after presentation of a threatening stimulus can serve as electrophysiological indicators of unconscious perception. The results obtained are considered from the perspective of the matched filtration model.

Keywords:

disguise, unconscionable perception, threat, electroencephalographic correlates

OCIS codes: 100.4996, 330.2210, 330.6110

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