Alexandra Tikidji-Hamburyan

Alexandra V. Tikidji-Hamburyan

(Zelinskaya)


Laboratory for neuroinformatics of sensory and motor systems

A.B.Kogan Research Institute for Neurocybernetics
Southern Federal University
194/1 Stachka Avenue
344090, Rostov-on-Don
Russia

Tel: 7 (8632) 43 37 44
Fax: 7 (8632) 43 35 88
E-mail: alex-z-nn@rambler.ru
Student in Psychology Department, Southern Federal University (SFU).
Co-investigator and laboratory assistant in Lab. NISMS

Currently, research interests of Alexandra Tikidji-Hamburyan include:
  • psychophysical testing of sensory processes, especially color vision and sound source localization;
  • neurophysiological experimenting in different levels of visual and auditory systems;
  • EEG study of attention and functional interhemispheric asymmetry;
  • developing realistic neuron and neural network models;
  • possibilities for the purposeful changes in human perception.


    List of publications:

    1. Zelinskaya A. (2007) The Retinal Mechanisms Model of Color Information Processing. In proc. of the IX All-Russian Scientific Conference "Neuroinformatics-2007", Moscow, pp. 32-40 (in russian)
      Abstract: A model of color processing in the retina is presented by paper. The results of modeling were compared with quantitative experimental psychophysics data on detecting a color border by human beings (color function). This results can explain some phenomena of color vision, particularly the unlinear structure of subjective color space, and suggest a hypothesis that the connection structure inside the retinal neuronal network has predominant influence on color function.

    2. Polevaya S., Parin S., Zelinskaya A., Dormidontova M., Eremin E. (2006) Recognition of color information as a function of human psychophysiological condition. In proc. of the VIII All-Russian Scientific Conference "Neuroinformatics-2006", Moscow, pp. 124-130. (in russian)
      Abstract: The paper describes a study of relations between the structure of subjective color space and anxiety level. It is shown that increase of anxiety level elevates the color differential thresholds and changes a structure of color discrimination in the certain way. The types of higher nervous activity reliably influences human color sensibility: the sanguines have highest sensibility, phlegmatics and cholerics have lower one and melancholics have the lowest. An increase of anxiety is related with excitability elevation, therefore recognition of color information is improved for melancholics, worsened for cholerics and doesn't changed for phlegmatics and sanguines. The paper presents a quantitative estimation of influence of psychophysiological characteristics to the structure of individual color space. The type of higher nervous activity and anxiety level could be considered as an arguments of psychophysical function of color vision.

    3. Polevaya S., Parin S., Zelinskaya A., Eremin E. (2005) A stress situation effect to quantitative characteristics of sensory images. In proc. of the 14-th International Conference on NeuroCybernetics, Rostov-on-Don, pp. 272-275. (in russian)
      Short review: the paper considers the changes of adaptive recognition in relations to human functional condition. The study of sensory functions in the stress situation is compared with slight anxiety situation and normal condition. Two sensory functions were tested: hearing (a sound source localization) and vision (color discrimination). It is showed that in the normal condition a characteristics of subjective color and sound spaces are quite stable, but the stress situation transforms its. Particularly, a differential color thresholds are decrease and the shape of color function is changed. The time parameters of sound source localization also shifted.

    4. Zelinskaya A. (2005) Relation between interhemispheric asymmetry and color vision. In proc. of the the 9-th Pushino School-Conference of young scientists "Biology - the science of the XXI century", Pushino, p.144. (in russian)
      Short review: the paper presents the study of relations between a interhemispheric asymmetry and color sensibility. It is showed that differential color thresholds are decreased if the right hemisphere are predominated and increased in the other case. Moreover, the degree of sensibility improvement is correlated with the degree of lateralization (expression of right hemispheric predomination).