Visual categorization during childhood: An ERP study
Visual categorization during childhood: An ERP study
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DOI：
10.1017/s0048577202010764
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发表时间：
2002-07-01
期刊：
影响因子：
3.7
通讯作者：
Taylor, MJ
中科院分区：
文献类型：
--
作者：
Batty, M;Taylor, MJ
分类是组织我们周围世界的基本手段，并提供了一种简单的方法来处理每天感知到的大量刺激。分类能力出现在婴儿早期，并对其他认知能力的获得有重要影响，但对儿童时期的发展知之甚少。我们研究了48名儿童（7-15岁）和14名成人使用动物/非动物视觉分类任务，同时记录事件相关电位（ERP）。测量三个分量：P1、N2和P3。在行为上，孩子们执行任务非常类似于成年人，虽然孩子们需要更长的时间来做出分类反应。随着年龄的增长，波幅（P1，N2，P3）和潜伏期（N2，P3）的下降表明，分类过程继续发展，通过童年。P1潜伏期在年龄组之间没有差异。N2潜伏期，这是与刺激分类，达到成人水平，在9岁和P3潜伏期在11岁。在成熟性变化完成后，与脑电相关的振幅开始下降。
Categorization is a basic means of organizing the world around us and offers a simple way to process the mass of stimuli one perceives every day. The ability to categorize appears early in infancy, and has important ramifications for the acquisition of other cognitive capacities, but little is known of its development during childhood. We studied 48 children (7-15 years of age) and 14 adults using an animal/nonanimal visual categorization task while event-related potentials (ERPs) were recorded. Three components were measured: P 1, N2, and P3. Behaviorally, the children performed the task very similarly to adults, although the children took longer to make categorization responses. Decreases in latencies (N2, P3) and amplitudes (P 1, N2, P3) with age indicated that categorization processes continue to develop through childhood. P1 latency did not differ between the age groups. N2 latency, which is associated with stimulus categorization, reached adult levels at 9 years and P3 latency at 11 years of age. Age-related amplitude decreases started after the maturational changes in latencies were finished.