G A Grigor'ian

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In this paper we have attempted to relate and explain the activity of the brain different integrative levels, which ends up with occurrence of a goal-directed behaviour and reinforcement. Two main mechanisms of responding to subjects and events of external environment, as rapid executive reactions and slow motivational-emotional states, have been marked(More)
  • G A Grigor'ian
  • 2012
A review. Current models of aggressive behavior in animals are described. They include aggression due to social isolation; territorial aggression in pair "intruder-resident"; aggression elicited by direct electrical stimulation of the brain; maternal aggression; learned aggression and genetic models. The models are analyzed comparatively and their(More)
  • G A Grigor'ian
  • 2004
In this paper some new methods for studying of general cognitive ability, g, and their experimental testing on mice are proposed. Instead of techniques based on learning processes with application of many trials and gradual elaboration of a habit, the proposed methods allow to assess behaviour by using only one or a few trials and to compare such behaviour(More)
In this paper the problem of "impulsive" and "self-control" behaviour in animals and the experimental models for their assessment are discussed. It is pointed out that a widely accepted model for assessment of impulsive behaviour in animals predominantly measures their ongoing properties of impulsivity/self-control independently on belonging them to the(More)
Different types of individual behavior are described in terms of under- or overestimation of reinforcement characteristics by the brain under conditions of uncertainty of reinforcement presentation. The following important biological characteristics of a subject are discussed, such as anxiety, fear, neuroticism, impulsiveness, self-control and psychoticism(More)
In experiments in dogs it has been found that testing electrical stimulation of the lateral hypothalamus (duration of this stimulation--5-7 s), of the ventromedial hypothalamus and of the substantia grisea centralis of mesencephalon reproduced earlier elaborated acid-defensive instrumental conditioned reflex. This fact takes place due to the activation of(More)
  • G A Grigor'ian
  • 2004
The paper reviews general cognitive ability (g), the ways of its measurement, and genetic and behavioural aspects of its investigations. The criteria for assessment of cognitive abilities in animals are also suggested and described. Based on these criteria the new behavioural methods and procedures are developed for investigation of general cognitive(More)
  • G A Grigor'ian
  • 1975
It has been found in fifteen rats with monopolar electrodes implanted in the lateral hypothalamus that after stimulation of the brain with bursts of electrical pulses of fixed duration, with definite combinations of stimulation parameters, the histograms of the duration of pedal pressing have a polymodal appearance. As the combinations of stimulation(More)
  • G A Grigor'ian
  • 2011
In the current paper a role of the serotinergic system in organization of impulsive behaviour in animals was considered. The results of influence of antagonists and agonists of the different types and subtypes of 5-HT receptors (1A, B; 2A, B, C; 7) and the effects of the dorsal raphe nuclei lesions on characteristics of impulsivity related with a motor(More)