期刊
CORTEX
卷 114, 期 -, 页码 28-40出版社
ELSEVIER MASSON, CORP OFF
DOI: 10.1016/j.cortex.2018.11.005
关键词
Number processing; Intraparietal sulcus; Inferior parietal lobule; Superior parietal lobule; Working memory; Spatial attention; Landmark task
资金
- Belgian Science Policy [IUAP P7/11]
- National Fund for Scientific Research -FWO [G002118N, EOS 30446199]
This study aimed at establishing the neural basis of magnitude processing of multiple numbers from working memory. We designed a numerical landmark task and embedded it in a fragmented trial event-related fMRI design, allowing to separate encoding from decision processing. An attentional localiser task not involving numbers allowed further functional specification. The results show that in a numerical landmark task the right anterior intraparietal sulcus is involved in number encoding while more posterior parietal regions, bilateral superior parietal lobule and right inferior parietal lobule, provide domain general support in the form of constructing a working memory representation or orienting spatial attention within that mental representation during number comparison. The results are in line with earlier studies reporting a functional distinction between anterior and posterior parietal contributions to number processing and further specify their role at a functional level. (C) 2018 Elsevier Ltd. All rights reserved.
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