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Ivlieva N.Yu.,Moscow State University of Psychology and Education
Neuroscience and Behavioral Physiology | Year: 2011

The midbrain dopaminergic system is traditionally regarded as a "common neural currency" for rewards of any modality. As regards the specific involvement of the mesocorticolimbic system in behavior there are currently three main hypotheses under consideration: 1) dopamine mediates "satisfaction;" 2) dopamine signals errors in predictions of rewards and thus serves as a learning signal critical in processes of associative learning; 3) dopamine creates motivation for actions directed to receiving a reward. However, considerable evidence has been obtained providing different levels of contradiction of these views of the functions of central dopamine. Attempts to clarify the role of the mesocorticolimbic dopaminergic system in adaptive behavior have shown that this system is involved in learning processes, in assessing the results of actions, in the processes identifying the significance of new stimuli, and in the mechanisms of decision-taking, though most studies have provided evidence that that the activity of the mesocorticolimbic system is of particular importance in situations of indeterminacy. We believe that this is the major enigma of dopamine, on the one hand supporting spontaneity and, on the other, protecting against excessive reactivity. © 2011 Springer Science+Business Media, Inc. Source

Barabanschikov V.A.,Moscow State University of Psychology and Education
Perception | Year: 2015

We studied preferably fixated parts and features of human face in the process of recognition of facial expressions of emotion. Photographs of facial expressions were used. Participants were to categorize these as basic emotions; during this process, eye movements were registered. It was found that variation in the intensity of an expression is mirrored in accuracy of emotion recognition; it was also reflected by several indices of oculomotor function: duration of inspection of certain areas of the face, its upper and bottom or right parts, right and left sides; location, number and duration of fixations, viewing trajectory. In particular, for low-intensity expressions, right side of the face was found to be attended predominantly (right-side dominance); the right-side dominance effect, was, however, absent for expressions of high intensity. For both low- and high-intensity expressions, upper face part was predominantly fixated, though with greater fixation of high-intensity expressions. The majority of trials (70%), in line with findings in previous studies, revealed a V-shaped pattern of inspection trajectory. No relationship, between accuracy of recognition of emotional expressions, was found, though, with either location and duration of fixations or pattern of gaze directedness in the face. © 2015, © The Author(s) 2015. Source

Vvedensky V.L.,Moscow State University of Psychology and Education
Neuroscience Letters | Year: 2014

We measured magnetic cortical responses to self-paced finger movements. Wide frequency band measurements revealed sharp elements of the response wave-shape, and allowed analysis of individual trials. The signal time course was decomposed into three components in the time window from 600. ms before to 600. ms after the movement. Each component had its own wave-shape and highly individual behavior. Two components displayed large trial-to-trial amplitude variations, whereas the amplitude of the third, high-frequency component remained stable. The frequency spectrum of the high-frequency component decayed exponentially, which indicates deterministic dynamics for the processes generating this magnetic signal. In spite of the large variations in the movement-related cortical signals, the movement itself, as measured by accelerometer attached to the finger tip, remained stable from trial to trial. The magnetic measurements are well-suited to reveal fine details of the process of movement initiation. © 2014 Elsevier Ireland Ltd. Source

Shcherbakova A.M.,Moscow State University of Psychology and Education
Dynamische Psychiatrie | Year: 2014

The article addresses the issue of personal resources in adolescents with mental disorders. It claims that addressing the objective of their psychological rehabilitation necessitates the use of the concept of psychological resilience. The theory and practice of resilience is based primarily on studying a person's resources rather than his or her deficiencies. Study of personal resources of adolescents with mental disorders presents certain challenges. The author makes a case for the application of an innovative diagnostic tool - the "Home of My Dreams" creative art therapy technique and a five-line poem, the cinquain. The study results demonstrate that for all of the adolescent subjects the image of home is resource-related. The author concludes that application of these techniques may be useful for identifying psychological resources in adolescents with mental disabilities. © 2014 Copyright 'Pinel' Verlag, Berlin, Dynamische Psychiatrie, Dynamic Psychiatry. Source

Butorina A.,Moscow State University of Psychology and Education | Prokofyev A.,Moscow State University of Psychology and Education | Litvak V.,University College London | Stroganova T.,Moscow State University of Psychology and Education
NeuroImage | Year: 2014

We tested whether mirror visual feedback (MVF) from a moving hand induced high gamma oscillation (HGO) response in the hemisphere contralateral to the mirror and ipsilateral to the self-paced movement. MEG was recorded in 14 subjects under three conditions: bilateral synchronous movements of both index fingers (BILATERAL), movements of the right hand index finger while observing the immobile left index finger (NOMIRROR), and movements of the right hand index finger while observing its mirror reflection (MIRROR). The right hemispheric spatiospectral regions of interests (ROIs) in the sensor space, sensitive to bilateral movements, were found by statistical comparison of the BILATERAL spectral responses to baseline. For these ROIs, the post-movement HGO responses were compared between the MIRROR and NOMIRROR conditions. We found that MVF from the moving hand, similarly to the real movements of the opposite hand, induced HGOs (55-85. Hz) in the sensorimotor cortex. This MVF effect was frequency-specific and did not spread to oscillations in other frequency bands. This is the first study demonstrating movement-related HGO induced by MVF from the moving hand in the absence of proprioceptive feedback signaling. Our findings support the hypothesis that MVF can trigger the feedback-based control processes specifically associated with perception of one's own movements. © 2014. Source

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