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Siffredi, Vanessa; Barrouillet, Pierre; Spencer-Smith, Megan; Vaessen, Maarten; Anderson, Vicki; Vuilleumier, Patrik Verbal working memory WM comprises different processes encoding, maintenance, retrieval that are often compromised in brain diseases, but their neural correlates have not yet been examined in childhood and adolescence. To probe WM processes and associated neural correlates in developmental samples, and obtain comparable effects across different ages and populations, we designed an adapted Brown-Peterson task verbal encoding and retrieval combined with verbal and visual concurrent tasks during maintenance to implement during functional magnetic resonance imaging fMRI.
While encoding activated perceptual systems in posterior and ventral visual regions, retrieval activated fronto-parietal regions associated with executive control and attention. We found a different impact of verbal versus visual concurrent processing during WM maintenance: at retrieval, the former condition evoked greater activations in visual cortex, as opposed to selective involvement of Optsiooni vahendaja 2021.
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aastal areas in left temporal cortex in the latter condition. These results are in accord with WM models, suggesting greater competition for processing resources when retrieval follows within-domain compared with cross-domain interference. This pattern was found regardless of age.
Our study provides a novel paradigm to investigate distinct WM brain systems with reliable results across a wide age range in developmental populations, and suitable Jesse Livermore Trading System tarkvara participants with different WM capacities. Directory of Open Access Journals Sweden Vanessa Siffredi Full Text Available Verbal working memory WM comprises different processes encoding, maintenance, retrieval that are often compromised in brain diseases, but their neural correlates have not yet been examined in childhood and adolescence.
A method of Danielewicz and Odyniec has been employed in determining a directed transverse flow of particles.
The values of the transverse flow parameter and the strength of the anisotropic emission were defined for each interacting nuclear pair.
It is found that the directed flows of protons and pions decrease with increasing the energy and the mass numbers of colliding nucleus pairs.