Modeling of the additional channel of feedback in eye-tracking and neuro-computer interfaces

Abstract

The paper analyzes the features of the application of the additional computer-human communication channel within the neurocomputer (brain-computer) and oculografic interfaces. A mathematical model of the functioning of this channel and its influence on the decision making by the user, taking into account the change in the accuracy of the definition of the user-generated command, depending on the time of the process analysis, is developed. The model is based on the approach according to which when receiving information about the nature of signal processing by the hardware and software part of the interface, the user can change his state, which influences the further processing of the results. Numerical modeling for neurocomputer and ocu-lograic interfaces was carried out, the values of the time ranges during which the presentation of information on the results of the preliminary classification of the user's commands can provide an improvement in the results of work. The obtained results allow to optimize the use of the developed technologies of the additional human-computer communication channel in the aspect of increasing the speed of their work.