Comparative Description Involuntarily Controllable Functional Dependent Human-Computer Interfaces

Ya. A. Turovsky, Associate Professor, Head of Laboratory, e-mail: yaroslav_turovsk@mail.ru, S. D. Kurgalin, Head of Department, A. A. Vahtin, Associate Professor, S. V. Borzunov, Associate Professor, Voronezh State University, A. S. Surovcev, Postgraduate Student, Voronezh State University of Engineering Technologies

We have studied the basic principles of functioning for spontaneously managed functionally-dependent human-PC interface. The interface is based on recording of human's functional tension, which, in particular, reflects the emotional component of a person's daily activities. In order to manage the interface we used heart rate variability signal (HRV). In this paper we have demonstrated that this signal can be applied in the interface for generating controlling commands in the Windows operating systems and their software applications. Also, we showed that the interface based on Fourier transformation or on evaluation of statistical parameters, is significantly faster in data transfer than an interface based on the wavelet transformation. It is proven that in terms of functioning accuracy, physiological interpretation of the recorded phenomena, time of reaction to changes in the user's state, low intensity and simplicity of the software implementation, the appropriate one is human-PC interface based on Fourier's method of spectral evaluation. This allows us to recommend it for creating a new kind of functionally-dependent channel of communication between a human and a computer.

Keywords: human-computer interfaces, involuntarily controllable interfaces, emotion

pp. 22–31