Developmental bias for number words in the intraparietal sulcus.

Developmental Science
Courtney A Lussier, Jessica F Cantlon

Abstract

Children and adults show behavioral evidence of psychological overlap between their early, non-symbolic numerical concepts and their later-developing symbolic numerical concepts. An open question is to what extent the common cognitive signatures observed between different numerical notations are coupled with physical overlap in neural processes. We show that from 8 years of age, regions of the intraparietal sulcus (IPS) that exhibit a numerical ratio effect during non-symbolic numerical judgments also show a semantic distance effect for symbolic number words. In both children and adults, the IPS showed a semantic distance effect during magnitude judgments of number words (i.e. larger/smaller number) but not for magnitude judgments of object words (i.e. larger/smaller object size). The results provide novel evidence of conceptual overlap between neural representations of symbolic and non-symbolic numerical values that cannot be explained by a general process, and present the first demonstration of an early-developing dissociation between number words and object words in the human brain.

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Citations

Sep 18, 2016·Proceedings of the National Academy of Sciences of the United States of America·Shipra KanjliaMarina Bedny
Mar 28, 2017·Language Learning and Development : the Official Journal of the Society for Language Development·Emily Szkudlarek, Elizabeth M Brannon
Oct 14, 2018·Brain Structure & Function·Han ZhangAnqi Qiu
Jan 1, 2017·Language Learning and Development : the Official Journal of the Society for Language Development·Alyssa J Kersey, Jessica F Cantlon
Aug 10, 2019·Developmental Cognitive Neuroscience·Alyssa J KerseyJessica F Cantlon
Apr 14, 2021·Trends in Neuroscience and Education·S BugdenE M Brannon

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