G. Kh. Merzhanova

  • Citations Per Year
Learn More
1. The number of neurons of the motor cortex and lateral nucleus of the hypothalamus working in an interconnected fashion (interstructural connections) is consistently increased after the elaboration of a conditioned alimentary instrumental response and is decreased during the extinction of the conditioned response. Both connections are equivalently(More)
The organization of interneuronal cortical connections was studied in experiments on cats with the development of delayed alimentary instrumental reflexes in response to light. The dynamics of the intra- and interstructural neuronal network at the level of the cortical projection (visual and motor) zones of the cat brain in three forms of behavior was(More)
In behavioral experiments, cats placed in a situation of choosing between a high-value time-delayed and a low-value rapid food reinforcement elected to wait for the preferred reward (they demonstrated “selfcontrol”) or to obtain the worse reward quickly (they demonstrated impulsive behavior). On the basis of the selected behavioral strategy, the cats were(More)
Depending on the food-procuring strategy in a “right to choose” reinforcements with different food values, cats were classified as “self-controlled,” “ambivalent,” or “impulsive” on the basis of significant differences in the occurrence of different types of reflexes. The organization of interneuronal interactions in the frontal, visual, and motor areas of(More)
Multiple neuronal activity, recorded through chronically implanted electrodes, was analyzed. During acquisition and consolidation of alimentary conditioned reflexes to electrostimulation of the lateral geniculate body or optical tract, the patterns of neuronal activity in the visual cortex and sensory motor cortex became organized in a way different from(More)
A method is substantiated in the present study for the adjustment of discriminated impulse series based on the identification of the parameters of discharges (AP) over a prolonged period of recording neuronal activity by means of chronically implanted semimicroelectrodes in different divisions of the brain of awake cats.
Cats were initially trained to make operant conditioned food responses to light by an “active selection of reinforcement” method. Provision of low-quality (a mixture of meat and brread) or high-quality (meat) reinforcement depended on the animal pressing a pedal in response to switching on a light with a short (1 sec) or long (10 sec) delay. Some animals(More)
The functional organization of local and distributed neural networks was studied in cats with different individual typological features of voluntary behavior. Stable behavioral characteristics were assessed using an individually varying selection of a larger (better) food reinforcement depending on the delay time in the operant motor response. Judging from(More)
The organization of distributed amygdalo–hypothalamic and local amygdalar and hypothalamic neural networks was studied in three cats, trained to perform a food–related operant conditioned reflex to light by the “active choice” of reinforcement quality method; pressing the pedal with a short latent period provided the cats with a bread/meat mixture, while(More)
1. During a stable food-getting conditioned reflex to electrical stimulation of the lateral geniculate body basically two types of responses of visual cortical neurons are observed as a manifestation of the forward conditioned connection: conditioned-activating and conditioned-inhibitory. 2. During extinction of the conditioned reflex the original neuronal(More)