Volume 31 #1

Contents

1. Sensory properties of reward pattern affect food preferences in rats
2. Probable role of p38 MAP-kinase in reception of infrared irradiation
3. Investigation of Src-kinase inhibitor PP2 effects on modulation of slow sodium channels by ouabain
4. Perimetric assessment of a blind zone margin at the extreme periphery of human temporal retina
5. LogMAR for visual acuity is worse than horsepower for electric lamp
6. Bright light induced freezing behavior in American cockroach, Periplaneta americana
7. Analysis of human eye movements in the management of self-propelled chassis with video eye-tracking interface system
8. Mechanisms of transduction of olfactory signals: the possible role of the contractive apparatus of the olfactory ciliae
9. Architecture of a system for computer vision-based vehicle detection and classification under natural conditions
10. Localization of a stereo camera equipped robot using poles with known location as landmarks

Paper describes the role of reward schedule in regulation of food preference in rats. It has been shown that food seeking behavior in rats performing in di erent types of mazes is controlled by multiple-food-unit reward schedule related to change in attractive properties of reinforcement under food preference processing. The data obtained suggest that multiple-food-unit incentive effect revealed under studying of discrete reward paradigm of learning may be involved in a common mechanism underlying both food disorders and drugs addiction in humans.

Key words: food preference, multiple-food-unit incentive effect, motivation, rats

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