Counting in everyday life: Discrimination and enumeration
文献类型：期刊论文
| 作者 | Nan, Yun; Knoesche, Thomas R.; Luo, Yue-Jia ; Y. J. Luo
|
| 刊名 | NEUROPSYCHOLOGIA
 |
| 出版日期 | 2006 |
| 卷号 | 44期号:7页码:1103-1113 |
| 关键词 | subitizing counting event-related potential (ERP) |
| ISSN号 | 0028-3932 |
| 文献子类 | Article |
| 英文摘要 | Enumerating the number of items in a set accurately and quickly is a basic mathematical skill. This ability is especially crucial in the more real-life situations, where relevant items have to be discriminated from irrelevant distracters. Although much work has been done on the brain mechanisms and neural correlates of the enumeration and/or discrimination process, no agreement has been reached yet. We used event-related potentials (ERPs) to show the time course of brain activity elicited by a task that involved both enumeration and discrimination at the same time. We found that even though the two processes run to some extent in parallel, discrimination seems to take place mainly in an earlier time window (from 100 ms after the stimulus onset) than enumeration (beyond 200 ms after the stimulus onset). Moreover, electrophysiological evidence based on the N2 and P3 components make it reasonable to argue for the existence of a dichotomy between subitizing (for sets of less than four items) and counting (for sets of four and more items). Source estimation suggests that subitizing and counting, though being distinct brain processes, do recruit similar brain areas.; Enumerating the number of items in a set accurately and quickly is a basic mathematical skill. This ability is especially crucial in the more real-life situations, where relevant items have to be discriminated from irrelevant distracters. Although much work has been done on the brain mechanisms and neural correlates of the enumeration and/or discrimination process, no agreement has been reached yet. We used event-related potentials (ERPs) to show the time course of brain activity elicited by a task that involved both enumeration and discrimination at the same time. We found that even though the two processes run to some extent in parallel, discrimination seems to take place mainly in an earlier time window (from 100 ms after the stimulus onset) than enumeration (beyond 200 ms after the stimulus onset). Moreover, electrophysiological evidence based on the N2 and P3 components make it reasonable to argue for the existence of a dichotomy between subitizing (for sets of less than four items) and counting (for sets of four and more items). Source estimation suggests that subitizing and counting, though being distinct brain processes, do recruit similar brain areas. (c) 2005 Elsevier Ltd. All rights reserved. |
| 学科主题 | 认知心理学 |
| 语种 | 英语 |
| WOS记录号 | WOS:000237637400011 |
| 公开日期 | 2011-08-22 |
| 源URL | [http://ir.psych.ac.cn/handle/311026/5283]  |
| 专题 | 心理研究所_中国科学院心理研究所回溯数据库(1956-2010) |
| 通讯作者 | Y. J. Luo |
| 作者单位 | 1.Chinese Acad Sci, Inst Psychol, Key Lab Mental Hlth, Beijing 100101, Peoples R China 2.MPI Human Cognit & Brain Sci, Leipzig, Germany 3.Beijing Normal Univ, Nat Key Lab Cognit Neurosci & Learning, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Nan, Yun,Knoesche, Thomas R.,Luo, Yue-Jia,et al. Counting in everyday life: Discrimination and enumeration[J]. NEUROPSYCHOLOGIA,2006,44(7):1103-1113. |
| APA | Nan, Yun,Knoesche, Thomas R.,Luo, Yue-Jia,&Y. J. Luo.(2006).Counting in everyday life: Discrimination and enumeration.NEUROPSYCHOLOGIA,44(7),1103-1113. |
| MLA | Nan, Yun,et al."Counting in everyday life: Discrimination and enumeration".NEUROPSYCHOLOGIA 44.7(2006):1103-1113. |
入库方式： OAI收割
来源：心理研究所
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