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Head   Nadejda Bogdabova Bocheva, PhD, Assoc.Prof.
Main research topics
Vision is the most powerful system for processing sensory information. A significant part of higher brain structures are involved in processing visual signals. The processes of visual image recognition and visual perception of space and motion are of particular importance. The main research interest of the Department "Sensory Neurobiology" is focused on the study the human visual system. We explore the visual processing of color information, obtained from short-wave cones in the human retina; the encoding visual information related to the spatial structure of images and the temporal dynamics of visual processing; the perception of motion and of changes in motion speed and direction, the recovery of the three-dimensional shape of objects in static and dynamic conditions, the spatial layout of the objects in the visual scene. The research teams aim to understand the brain mechanisms involved in visual information processing and their interaction with other cognitive processes using psychophysical and electrophysiological methods, and to explore the visual-motor regulation and learning by analyzing electric brain activity in different age groups. We also explore these mechanisms in patients with glaucoma and diabetes, as well as the neurological disorders in development and aging.
- Contrast sensitivity measurements with periodic (sinusoidal or complex gratings) and non-periodic stimuli - Reaction time - Motion sensitivity measurements - Visual evoked potentials - Auditory evoked potentials - Method of equivalent noise   more...
Mihaylova, M. S., Hristov, I., Racheva, K., Totev, Ts., Mitov, D. (2013) Early VEP waves to stimuli-gratings with different length and width. Compt. Rendus Bulg. Ac. Sci., 66(3), 393- 400.   more...
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