scholarly journals Learning in Infancy Is Active, Endogenously Motivated, and Depends on the Prefrontal Cortices

2020 ◽  
Vol 2 (1) ◽  
pp. 247-268 ◽  
Author(s):  
Gal Raz ◽  
Rebecca Saxe

A common view of learning in infancy emphasizes the role of incidental sensory experiences from which increasingly abstract statistical regularities are extracted. In this view, infant brains initially support basic sensory and motor functions, followed by maturation of higher-level association cortex. Here, we critique this view and posit that, by contrast and more like adults, infants are active, endogenously motivated learners who structure their own learning through flexible selection of attentional targets and active interventions on their environment. We further argue that the infant brain, and particularly the prefrontal cortex (PFC), is well equipped to support these learning behaviors. We review recent progress in characterizing the function of the infant PFC, which suggests that, as in adults, the PFC is functionally specialized and highly connected. Together, we present an integrative account of infant minds and brains, in which the infant PFC represents multiple intrinsic motivations, which are leveraged for active learning.

2020 ◽  
Author(s):  
Gal Raz ◽  
Rebecca Saxe

A common view of learning in infancy emphasizes the role of incidental, sensory experiences from which increasingly abstract statistical regularities are extracted. In this view, infant brains initially support basic sensory and motor functions, followed by maturation of higher-level association cortex. Here, we critique this view and posit that, by contrast and more like adults, infants are active, endogenously motivated learners who structure their own learning through flexible selection of attentional targets and active interventions on their environment. We further argue that the infant brain, and particularly the prefrontal cortex (PFC), is well-equipped to support these learning behaviors. We review recent progress in characterizing the function of the infant PFC, which suggests that, also like adults, PFC is functionally specialized and highly connected. Together, we present an integrative account of infant minds and brains, in which the infant PFC represents multiple intrinsic motivations, which are leveraged for active learning.


Author(s):  
М.А. Бакаев ◽  
О.М. Разумникова

Информационные технологии становятся всё более важным инструментом научного познания в связи с экспоненциальным увеличением количества публикаций, представляющих результаты нейробиологических и психологических исследований. Для выявления предикторов когнитивных резервов и методик их определения на основе разработанной прикладной онтологии нами выполнен библиометрический анализ публикаций, содержащихся в базе данных PubMed. Показано, что ежегодный рост количества релевантных теме публикаций в период 1990- 2019 гг. составил 11%, что превышает средний по науке. Среди психофизиологических индикаторов когнитивных резервов наибольший интерес отмечен к изучению префронтальной коры головного мозга, бета-диапазона (13-30 Гц) ЭЭГ, тормозных процессов и информационной нагрузки. Анализ роли этих факторов свидетельствует, что формирование и/или реализация когнитивных резервов обеспечивается вследствие тормозных функций префронтальной коры головного мозга для эффективной селекции релевантных стимулов в условиях информационной нагрузки. Выделенные предикторы когнитивных резервов и наиболее популярные методики их психометрической оценки могут быть полезны для выбора новых направлений исследований в геронтологии. Information technology is becoming an increasingly important tool of scientific knowledge due to the exponential growth of the number of publications presenting the results of neurobiological and psychological research. To identify predictors of cognitive reserves and methods for their determination based on the developed applied ontology, we performed a bibliometric analysis of publications contained in the PubMed database. It is shown that the annual growth in the number of publications relevant to the topic in the period 1990-2019 was 11%, which is higher than the average for science. We found the following psychophysiological indicators of cognitive reserves to gain the greatest increase in the interest of researchers: prefrontal cortex, beta range (13-30 Hz) of EEG, inhibition and information load. Analysis of the role of these factors suggests that the development and/or realization of cognitive reserves is provided due to inhibitory functions of the prefrontal cortex for the effective selection of relevant stimuli under conditions of information load. The identified predictors of cognitive reserves and the most popular methods of their psychometric assessment can be useful for choosing new areas of research in gerontology.


2010 ◽  
Author(s):  
Aja Taitano ◽  
Bradley Smith ◽  
Cade Hulbert ◽  
Kristin Batten ◽  
Lalania Woodstrom ◽  
...  

2016 ◽  
Vol 04 (01) ◽  
pp. 4-10

AbstractImmunosuppression permits graft survival after transplantation and consequently a longer and better life. On the other hand, it increases the risk of infection, for instance with cytomegalovirus (CMV). However, the various available immunosuppressive therapies differ in this regard. One of the first clinical trials using de novo everolimus after kidney transplantation [1] already revealed a considerably lower incidence of CMV infection in the everolimus arms than in the mycophenolate mofetil (MMF) arm. This result was repeatedly confirmed in later studies [2–4]. Everolimus is now considered a substance with antiviral properties. This article is based on the expert meeting “Posttransplant CMV infection and the role of immunosuppression”. The expert panel called for a paradigm shift: In a CMV prevention strategy the targeted selection of the immunosuppressive therapy is also a key element. For patients with elevated risk of CMV, mTOR inhibitor-based immunosuppression is advantageous as it is associated with a significantly lower incidence of CMV events.


Author(s):  
Palky Mehta ◽  
H. L. Sharma

In the current scenario of Wireless Sensor Network (WSN), power consumption is the major issue associated with nodes in WSN. LEACH technique plays a vital role of clustering in WSN and reduces the energy usage effectively. But LEACH has its own limitation in order to search cluster head nodes which are randomly distributed over the network. In this paper, ERA-NFL- BA algorithm is being proposed for selects the cluster heads in WSN. This algorithm help in selection of cluster heads can freely transform from global search to local search. At the end, a comparison has been done with earlier researcher using protocol ERA-NFL, which clearly shown that proposed Algorithm is best suited and from comparison results that ERA-NFL-BA has given better performance.


2019 ◽  
Vol 16 (2-3) ◽  
pp. 161-179
Author(s):  
Outi Paloposki

The article looks at book production and circulation from the point of view of translators, who, as purchasers and readers of foreign-language books, are an important mediating force in the selection of literature for translation. Taking the German publisher Tauchnitz's series ‘Collection of British Authors’ and its circulation in Finland in the nineteenth and early twentieth century as a case in point, the article argues that the increased availability of English-language books facilitated the acquiring and honing of translators' language skills and gradually diminished the need for indirect translating. Book history and translation studies meet here in an examination of the role of the Collection in Finnish translators' work.


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