An fMRI study of magnitude comparison and exact addition in children.

Magnetic Resonance Imaging
Ernesta M MeintjesJoseph L Jacobson

Abstract

By contrast to the adult literature, in which a consistent parietofrontal network for number processing has been identified, the data from studies of number processing in children have been less consistent, probably due to differences in study design and control conditions. Number processing was examined using functional magnetic resonance imaging in 18 right-handed children (8-12 years) from the Cape Coloured community in Cape Town, South Africa, using Proximity Judgment and Exact Addition (EA) tasks. The findings were consistent with the hypothesis that, as in adults, the anterior horizontal intraparietal sulcus (HIPS) plays a major role in the representation and manipulation of quantity in children. The posterior medial frontal cortex, believed to be involved in performance monitoring in more complex arithmetic manipulations in adults, was extensively activated even for relatively simple symbolic number processing in the children. Other areas activated to a greater degree in the children included the left precentral sulcus, which may mediate number knowledge and, for EA, the head of the caudate nucleus, which is part of a fronto-subcortical circuit involved in the behavioral execution of sequences. Two regions that have been...Continue Reading

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Citations

May 5, 2011·Neuropsychology Review·Sandra W JacobsonChristopher D Molteno
Jan 24, 2012·Pediatric Neurology·François De GuioErnesta M Meintjes
Jun 10, 2010·Alcoholism, Clinical and Experimental Research·Ernesta M MeintjesSandra W Jacobson
Dec 4, 2012·Journal of Experimental Child Psychology·Justin W Bonny, Stella F Lourenco
Nov 16, 2010·Alcoholism, Clinical and Experimental Research·Sandra W JacobsonJoseph L Jacobson
Dec 17, 2010·Alcoholism, Clinical and Experimental Research·Joseph L JacobsonSandra W Jacobson
Mar 12, 2018·Behavioral and Brain Functions : BBF·Christina ArtemenkoThomas Dresler
Jan 1, 2017·Language Learning and Development : the Official Journal of the Society for Language Development·Alyssa J Kersey, Jessica F Cantlon

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