Компоненты вызванного потенциала в исследовании перцептивного научения
Perceptual learning is defined by increased effectiveness of completing perceptual tasks as a result of experience or training. This review presents the analysis of changes in the components of event-related potentials (ERPs) after visual and auditory perceptual learning in humans. The use of the EEG method, which has a high temporal resolution, makes it possible to trace the spatio-temporal dynamics of changes in the functioning of the brain during learning, which remains hidden in behavioral experimental studies. A review of neurophysiological studies indicates that perceptual learning induces changes across all levels of cortical hierarchy, starting with the early sensory components of ERPs (C1) and ending with the later integrative components (N170, MMN, P2). We also analyzed the short-term and long-term effects of learning. The reviewed neurophysiological data can serve as the basis for the development of new approaches of effective learning, as well as for the objective evaluation of existing methodics by assessing neuronal dynamics at different stages of stimuli processing.
It is well known, that even in optimal conditions animals and humans make spontaneous errors which are the most prominent manifestations of attention system failures. Our goal was to investigate the causes of attention system failures in normal state of arousal and without distracting objects. We have designed a new task which allows to answer the following question: which stage of sensory processing is compromised during attention lapses?
Formation of democratic societies of the Western type presupposes appearance on the historical scene of a new strong actor - the bourgeois class: "No bourgeoisie, no democracy" (Barrington Moore). The articulation and defense of vital interests of that class creates a new social space - "the bourgeois public sphere" which helps to make up "counterbalance" to absolutism of a corporate state - a civil society, the core of which is composed by public opinion. In the confrontation between the authorities and society one of the most important roles is played by the press that provides free debate and discussion of generally valid problems, especially economic and political. The recognition of the mass media role was stamped in its characterization in XIII century as "the fourth power". Technological development of the media incredibly expanded its functions, turning journalists into creating informational analogue of reality, saturating daily life with new meanings. Methods of the representation of reality, the specific nature of political influence of journalists - key members of the reflexive elites (Helmut Shelski), are the themes of this article.
Публичная сфера, журналистика, четвертая власть, порядки знания, Повседневность, научное и повседневное знание, экспертиза, Репрезентация, public sphere, journalism, fourth estate, orders of knowledge, Everyday life, scientific and everyday knowledge, Expertise, representation
Grigoriy Konson’s interview with MD, Associate Professor at the University of Birmingham Armen Gasparyan unravels the key issues of modern Russian science, which is found now at the intersection of diverse trends. One of the main ones is the increasing visibility of Rus-sian-language scientific journals at the international level and digitalization so that they could technically become high-quality and indexable. To do this, two basic conditions must be observed: authors must possess all copyrights, and their works must be stored in repositories, that are needed by scientists to gain world visibility and long-term use of published materials. Since the Interna-tional Conference in Budapest (2001), a global initiative to publish open access scientific papers has been established. This was done so that scholars working with scientific materials could make them publically available and widely use such materials for scientific purposes. Now there is a tendency to open servers, which contain not only published and peer-reviewed works, but also pre-publication materials. Preprint services became a recent innovation. Media, television, and cinema scholars post scientific materials that have not been published before. This makes it possible to get priority in their writings. There are also tools to promote open access. These are, first of all, digital identifiers of scien-tific materials and authors. Since 2012, digital author identifiers (Open Researcher and Contribu-tor ID [ORCID]) are widely used in many countries; there are more than 6 million registered users. The digital identifier ORCID is popular among Russian-speaking authors as well, but often they use only part of its capabilities. Information about many Russian-speaking authors is not repre-sented in full on the ORCID platform, which means that their works are not visible to the public. The development of open access journals is mainly hampered by the hybrid-type periodicals, combining the principles of open and subscription publications. There are a lot of such journals in Russia. The majority of them are about medicine; and as a matter of fact, digitalization is gradually making the traditional subscription wither away. Therefore, professional communities need to take on the responsibility of financing open access publications to allow journals to advance. In the era of open access, plagiarism can be timely discovered, while in subscription journals it is veiled. Future expectations are that Russian-language periodicals that do not follow new trends in science and publishing can cease to exist. They become bankrupt; they cannot find alternative sources of financing. However, their prestige needs to be enhanced through open access. There should be an increase in the number of multilingual journals that will attract English-language authors.
The author considers the term «compensative expertise» and its role in successful language mastering.
Objects have a variety of different features that can be represented as probability distributions. Recent findings show that in addition to mean and variance, the visual system can also encode the shape of feature distributions for features like color or orientation. In an odd-one-out search task we investigated observers' ability to encode two feature distributions simultaneously. Our stimuli were defined by two distinct features (color and orientation) while only one was relevant to the search task. We investigated whether the irrelevant feature distribution influences learning of the task-relevant distribution and whether observers also encode the irrelevant distribution. Although considerable learning of feature distributions occurred, especially for color, our results also suggest that adding a second irrelevant feature distribution negatively affected the encoding of the relevant one and that little learning of the irrelevant distribution occurred. There was also an asymmetry between the two different features: Searching for the oddly oriented target was more difficult than searching for the oddly colored target, which was reflected in worse learning of the color distribution. Overall, the results demonstrate that it is possible to encode information about two feature distributions simultaneously but also reveal considerable limits to this encoding.
The book of professor of National research University Higher School of Economics A.Yu. Sungurov devoted to the process of expert influence on the policy decision process. The different kinds of expertise and models of expert community and government interaction are analysed in the first chapter of book. The Russian and international scienific discussions on this topics analysed in the forst chapter also. The results of our research of practics of experts and government interactions into process of policy policy decisions in Russia at federal and regional levels are presented in the second chapter of book. The problems of normative expertise and expert accompaniment of policy decisions are analysed also.
The distractive effects on attentional task performance in different paradigms are analyzed in this paper. I demonstrate how distractors may negatively affect (interference effect), positively (redundancy effect) or neutrally (null effect). Distractor effects described in literature are classified in accordance with their hypothetical source. The general rule of the theory is also introduced. It contains the formal prediction of the particular distractor effect, based on entropy and redundancy measures from the mathematical theory of communication (Shannon, 1948). Single- vs dual-process frameworks are considered for hypothetical mechanisms which underpin the distractor effects. Distractor profiles (DPs) are also introduced for the formalization and simple visualization of experimental data concerning the distractor effects. Typical shapes of DPs and their interpretations are discussed with examples from three frequently cited experiments. Finally, the paper introduces hierarchical hypothesis that states the level-fashion modulating interrelations between distractor effects of different classes.
This article describes the expierence of studying factors influencing the social well-being of educational migrants as mesured by means of a psychological well-being scale (A. Perrudet-Badoux, G.A. Mendelsohn, J.Chiche, 1988) previously adapted for Russian by M.V. Sokolova. A statistical analysis of the scale's reliability is performed. Trends in dynamics of subjective well-being are indentified on the basis the correlations analysis between the condbtbions of adaptation and its success rate, and potential mechanisms for developing subjective well-being among student migrants living in student hostels are described. Particular attention is paid to commuting as a factor of adaptation.