[1] Lin Pingting, Zhu Yanmei, Zhang Li, et al. Dissociated neural potential for processing strategiesbetween decimals and fractions [J]. Journal of Southeast University (English Edition), 2021, 37 (4): 379-387. [doi:10.3969/j.issn.1003-7985.2021.04.006]

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Dissociated neural potential for processing strategiesbetween decimals and fractions()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

37

Issue:

2021 4

Page:

379-387

Research Field:

Computer Science and Engineering

Publishing date:

2021-12-20

Info

Title:

Dissociated neural potential for processing strategiesbetween decimals and fractions

Author(s):

Lin Pingting¹;  Zhu Yanmei¹;  2;  Zhang Li²;  Bai Yi¹;  Wang Haixian¹

¹School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
² School for Early-Childhood Education, Nanjing Xiaozhuang University, Nanjing 211171, China

Keywords:

decimal;  fraction;  exact strategy;  approximate strategy;  event-related potential(ERP);  P2;  N2

PACS:

TP391

DOI:

10.3969/j.issn.1003-7985.2021.04.006

Abstract:

The entity and symbolic fraction comparison tasks separating identification and semantic access stages based on event-related potential technology were used to investigate neural differences between fraction and decimal strategies in magnitude processing of nonsymbolic entities and symbolic numbers. The experimental results show that continuous entities elicit stronger left-lateralized anterior N2 in decimals, while discretized ones elicit more significant right-lateralized posterior N2 in fractions during the identification stage. On the other hand, decimals elicit stronger N2 over the left-lateralized fronto-central sites while fractions elicit the more profound P2 over the right-lateralized fronto-central sites and N2 at biparietal regions during the semantic access stage. Hence, for nonsymbolic entity processing, alignments of decimals and continuous entities activate the phonological network, while alignments of fractions and discretized entities trigger the visuospatial regions. For symbolic numbers processing, exact strategies with rote arithmetic retrieval in verbal format are used in decimal processing, while approximate strategies with complex magnitude processing in a visuospatial format are used in fraction processing.

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Memo

Memo:

Biographies: Lin Pingting(1989—), female, Ph. D. candidate; Zhu Yanmei(corresponding author), female, doctor, lecturer, zhuyanmei@seu.edu.cn.
Foundation items: The National Natural Science Foundation of China(No. 62077013, 61773114), the Jiangsu Provincial Innovation Project for Scientific Research of Graduate Students in Universities(No. KYCX17_0160).
Citation: Lin Pingting, Zhu Yanmei, Zhang Li, et al. Dissociated neural potential for processing strategies between decimals and fractions[J].Journal of Southeast University(English Edition), 2021, 37(4):379-387.DOI:10.3969/j.issn.1003-7985.2021.04.006.

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