Human-Computer Interaction: Ergonomics and User Interfaces - Vol. 1

By Hans-Jörg Bullinger; Jürgen Ziegler | Go to book overview

increase of the heart rate suggest anxiety and defensive responses ( Danilova, 1995).

A promising approach to evaluate emotional state of user would be a computerbased identification of facial expressions. MDS of subjective differences between outlined facial emotional expressions has shown that the angles of brouttes and mouth strongly determine emotional aspects of facial expression. Different emotional expressions are located on a hypersphere in the four dimensional emotional space. Emotional tone, emotional intensity and emotional saturation correspond to three angles of the emotional hypersphere. Subjective differences between emotions highly correlate with distances between points in the four-dimensional space ( Sokolov, 1992, Izmailov et al, 1999). The geometrical model of facial emotional expression implemented as a neuron-like structure in a computer might be used in parallel with autonomic indices of emotions.

Combination of cognitive and biological criteria can contribute to individual optimization of computer-assisted education.


References

Danilova, N. N. ( 1995). "Serdechnyi ritm i informationnaya nagruzka" (Heart rhythm and informational load). Vestn. Mosk. U-ta, Seria 14, Psikhologiya, 4, 14-27.

Izmailov, C. A., and Sokolov, E. N. ( 1991). "Spherical model of color and brightness discrimination". Psychological Science, 2, 249-259.

Izmailov, C. A., and Sokolov, E. N. ( 1992). "A semantic space of color names". Psychological Science, 3, 105-110.

Izmailov, C. A., Korshunova, S. G., and Sokolov, E. N. ( 1999). "Sfericheskaya model razlicheniya emotsionalnykh vyrazhenii skhematicheskogo litsa (Spherical model for differentiation of the outlined face)". Zhurn. vys. nerv. deyat., vol. 49, pp. 186-199.

Sokolov, E. N., and Cacioppo, J. T. ( 1997). "Orienting and defense reflexes: Vector coding the cardiac response". In Lang, P. J., Simins, R. F., and Balaban,, M. (Eds.): Attention and Orienting: Sensory and Motivational Processes, pp. 1- 22. Mahwah - London: Lowrence Erlbaum Associates Publishers.

Sokolov, E. N. ( 1998). "Model of cognitive process". In Sabourin, M., Clark, D. and Robert, M. (Eds): Advantages in Psychological Science. Vol. 2. Biological and Cognitive Aspects, pp. 355-379. East Sussex, UK, Psychology press.

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