Long-distance neural synchrony correlates with processing strategies to compare fractions

Barraza, P.; Gomez, DM; Oyarzun F.; Dartnell P.

Abstract

Adults use different processing strategies to work with fractions. Depending on task requirements, they may analyze the fraction components separately (componential processing strategy, CPS) or consider the fraction as a whole (holistic processing strategy, HPS). It is so far unknown what is the brain coordination dynamics underlying these types of fraction processing strategies. To elucidate this issue, we analyzed oscillatory brain activity during a fraction comparison task, presenting pairs of fractions either with or without common components. Results show that CPS induces a left frontal-parietal alpha phase desynchronization after the onset of fraction pairs, while HPS induces an increase of phase synchrony on theta and gamma bands, over frontal and central-parietal sites, respectively. Additionally, the HPS evokes more negative ERPs around 400 ms over the right frontal scalp than the CPS. This ERP activity correlates with the increase of Theta phase synchrony. Our results reveal the emergence of different functional neural networks depending on the kind of cognitive strategy used for processing fractions. (C) 2014 The Authors. Published by Elsevier Ireland Ltd.

Más información

Título según WOS: Long-distance neural synchrony correlates with processing strategies to compare fractions
Título según SCOPUS: Long-distance neural synchrony correlates with processing strategies to compare fractions
Título de la Revista: NEUROSCIENCE LETTERS
Volumen: 567
Editorial: ELSEVIER IRELAND LTD
Fecha de publicación: 2014
Página de inicio: 40
Página final: 44
Idioma: English
DOI:

10.1016/j.neulet.2014.03.021

Notas: ISI, SCOPUS