The integration between nonsymbolic and symbolic numbers: Evidence from an EEG study.
The integration between nonsymbolic and symbolic numbers: Evidence from an EEG study.
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DOI：
10.1002/brb3.938
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发表时间：
2018-04
影响因子：
3.1
通讯作者：
Libertus ME
中科院分区：
文献类型：
--
作者：
Liu R;Schunn CD;Fiez JA;Libertus ME
成人可以用非符号和符号格式表示数字信息，并可以在两者之间灵活切换。虽然一些研究表明这两个数字表示系统之间存在很强的联系（例如，Piazza, Izard, Pinel, Le Bihan, & Dehaene, 2004 Neuron, 44(3), 547），但其他研究表明反对强联系假设的证据（例如，Lyons, Ansari, & Beilock, 2012 Journal of Experimental Psychology: General, 141(4), 635）。这种不一致可能是由于任务需求之间的关系以及两个数字系统之间联系的紧密程度造成的。我们使用被动观看任务和事件相关电位（ERP）来检查非符号系统和符号系统之间隐式集成的时间动态。我们重点关注后头皮部位的两个 ERP 成分，发现它们对两种数字格式的数字距离和比率差异敏感：负成分在刺激后 170 毫秒 (N1) 左右达到峰值，正成分在刺激后 200 毫秒 (P2p) 左右达到峰值。我们检查了成年人（n = 55）在被动地观看同时呈现的点数量和两位数范围内的阿拉伯数字（即非符号和符号数字信息）时的 ERP。对于每个刺激，非象征性和象征性内容在数量上要么匹配，要么不匹配。我们还要求每个参与者在单独的行为任务中估计点的数量，并观察到他们倾向于低估实际的点的数量，这表明需要调整非符号和符号信息之间的匹配以反映非符号信息的感知数量。通过这种调整，当感知到的点数量与阿拉伯数字匹配时，参与者表现出比不匹配时更大的 N1 和 P2p 幅度。然而，未调整的匹配和不匹配条件之间没有发现差异。我们的研究结果表明，成年人快速整合两位数数字的非符号和符号格式，但当考虑感知（而不是真实）点数量时，可以最好地观察到这种整合的证据。
Adults can represent numerical information in nonsymbolic and symbolic formats and flexibly switch between the two. While some studies suggest a strong link between the two number representation systems (e.g., Piazza, Izard, Pinel, Le Bihan, & Dehaene, 2004 Neuron, 44(3), 547), other studies show evidence against the strong‐link hypothesis (e.g., Lyons, Ansari, & Beilock, 2012 Journal of Experimental Psychology: General, 141(4), 635). This inconsistency could arise from the relation between task demands and the closeness of the link between the two number systems. We used a passive viewing task and event‐related potentials (ERP) to examine the temporal dynamics of the implicit integration between the nonsymbolic and symbolic systems. We focused on two ERP components over posterior scalp sites that were found to be sensitive to numerical distances and ratio differences in both numerical formats: a negative component that peaks around 170 ms poststimulus (N1) and a positive component that peaks around 200 ms poststimulus (P2p). We examined adults' (n = 55) ERPs when they were passively viewing simultaneously presented dot quantities and Arabic numerals (i.e., nonsymbolic and symbolic numerical information) in the double‐digit range. For each stimulus, the nonsymbolic and symbolic content either matched or mismatched in number. We also asked each participant to estimate dot quantities in a separate behavioral task and observed that they tended to underestimate the actual dot quantities, suggesting a need to adjust the match between nonsymbolic and symbolic information to reflect the perceived quantity of the nonsymbolic information. Using this adjustment, participants showed greater N1 and P2p amplitudes when perceived dot quantities matched Arabic numerals than when there was a mismatch. However, no differences were found between the unadjusted match and mismatch conditions. Our findings suggest that adults rapidly integrate nonsymbolic and symbolic formats of double‐digit numbers, but evidence of such integration is best observed when the perceived (rather than veridical) dot quantity is considered.
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影响因子：
1.3
作者：
Crollen, Virginie;Castronovo, Julie;Seron, Xavier
通讯作者：
Seron, Xavier
DOI：
10.3758/bf03206218
发表时间：
1982-01-01
期刊：
PERCEPTION & PSYCHOPHYSICS
影响因子：
--
作者：
KRUEGER, LE
通讯作者：
KRUEGER, LE
影响因子：
9.8
作者：
Cantlon JF;Brannon EM;Carter EJ;Pelphrey KA
通讯作者：
Pelphrey KA
影响因子：
3.2
作者：
Dehaene, S
通讯作者：
Dehaene, S
DOI：
10.1111/j.1467-8721.2009.01665.x
发表时间：
2009-12-01
影响因子：
7.2
作者：
Libertus ME;Brannon EM
通讯作者：
Brannon EM