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首页> 外文期刊>Cortex: A Journal Devoted to the Study of the Nervous System and Behavior >Developmental specialization of the left intraparietal sulcus for symbolic ordinal processing
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Developmental specialization of the left intraparietal sulcus for symbolic ordinal processing

机译：左内沟的发育专业符号序数加工

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Symbolic numbers have both cardinal (symbol-quantity) and ordinal (symbol symbol) referents. Despite behavioural evidence suggesting distinct processing of cardinal and ordinal referents, little consensus has emerged from the neuroimaging literature on whether these processes have shared or distinct neural underpinnings. Moreover, it remains unclear how the neural correlates of cardinal and ordinal processing change with age. To address these unresolved questions, we investigated the neural correlates of cardinal (neural distance effect) and ordinal processing (neural reverse distance effect) in 50 children (ages 7-10) and 26 adults (ages 19-26). We found that adults recruited a largely left lateralized set of fronto-parietal regions for ordinal processing, whereas children showed activation in the right lateral orbital and inferior frontal gyri for both ordinal and cardinal processing. Additional analyses suggested that adults recruited the left intraparietal sulcus (IPS) more than children for ordinal processing, suggesting that the IPS may become increasingly tuned to ordinal symbolic properties over development. Together with previous literature documenting the importance of the left IPS for cardinal processing, our results suggest that cardinal and ordinal processing may share neural substrates in the left IPS and that this region may become specialized for both skills over development. (C) 2018 Elsevier Ltd. All rights reserved.
机译：符号数字具有基数（符号数量）和序数（符号符号）引用。尽管有行为证据表明基于和序序的不同加工，但神经影像学文献中出现了对这些过程是否有共同或不同的神经内衬的综合。此外，还尚不清楚基于年龄的红衣主教和序数加工的神经相关性如何变化。为了解决这些未解决的问题，我们研究了50名儿童（7-10岁）和26岁的成人（年龄7-10岁）和26岁的儿童（年龄7-10岁）和序数加工（神经距离效应）的神经相关性。我们发现，成年人招募了一系列左侧左侧偏向的序数地区，以进行序数加工，而儿童表现出右侧轨道和较差的阶段逆向术中的激活，以进行序数和基本加工。额外的分析表明，成年人以序数加工的儿童招募左内血管（IPS），这表明IPS可能会越来越调整到序数象征性的开发。与以前的文献一起记录了左侧IP的重要性，我们的结果表明，红衣主教和序数加工可以共享左侧IP中的神经基板，并且该地区可能是专门用于对发育技能的专业化。 （c）2018年elestvier有限公司保留所有权利。

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