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Counting in everyday life: Discrimination and enumeration
Nan, Yun; Knoesche, Thomas R.; Luo, Yue-Jia; Y. J. Luo
2006
Source PublicationNEUROPSYCHOLOGIA
ISSN0028-3932
SubtypeArticle
Volume44Issue:7Pages:1103-1113
AbstractEnumerating 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.
Keywordsubitizing counting event-related potential (ERP)
Subject Area认知心理学
Indexed BySCI ; SSCI
Language英语
WOS IDWOS:000237637400011
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/5283
Collection中国科学院心理研究所回溯数据库(1956-2010)
Corresponding AuthorY. J. Luo
Affiliation1.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
Recommended Citation
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.
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