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[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()
小数和分数加工策略的神经电位差异
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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
小数和分数加工策略的神经电位差异
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
林娉婷1, 朱艳梅1, 2, 张莉2, 柏毅1, 王海贤1
1东南大学生物科学与医学工程学院, 南京 210096; 2南京晓庄学院幼儿师范学院, 南京 211171
Keywords:
decimal;  fraction;  exact strategy;  approximate strategy;  event-related potential(ERP);  P2;  N2
小数;  分数;  精确策略;  近似策略;  事件相关电位;  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.
为研究小数和分数在非符号图形与符号数字系统中数量加工策略的神经活动差异, 基于事件相关电位技术, 采用非符号图形与符号数字比较任务范式, 对数量加工中的识别和语义阶段进行分离.结果表明:在识别阶段, 小数任务中连续图形诱发更大左前部N2;分数任务中离散图形诱发更大右后部N2.在语义阶段, 小数任务诱发更强的左侧额-中央区N2;分数任务诱发更大的右侧额-中央区P2和双侧顶区N2.在非符号图形加工阶段, 小数对连续图形的偏好基于语音网络;分数对离散图形的联结则依赖于视觉空间网络.在符号数字加工阶段, 小数基于语言编码, 采用精确策略对运算知识进行回忆检索;分数基于视觉空间编码, 采用近似策略进行复杂的数量加工.

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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.
Last Update: 2021-12-20