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Intermittency during bistable visual perception of ambiguous images

Maria Kurovskaya
Present paper is devoted to the study of intermittency during the perception of bistable Necker cube image being a good example of an ambiguous object. Design of experiment allowing to measure characteristics of intermittency in the process of bistable visual perception was created. Distributions of time intervals lengths corresponding to the periods of left-oriented cube or right-oriented cube observation have been obtained. In a large range of durations distribution of time intervals of observation one of the projections of the Necker cube obeys the exponential law. Cognitive noise level of participants of the experiments has been estimated. The greater the intensity of cognitive noise is, the more frequently the changes of the bistable image projections occur in the perception of the subjects and, accordingly, the shorter the average time of observation of each projection is in the intermittent dynamics of ambiguous image perception. It was also shown that for different values of intensity I of cube edges the difference between more probable duration of observation of the left projection and of the right one increases with the increasing or decreasing of I with regard to I = 0,5.
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