Developmental changes in point-light walker processing during childhood : A two-year follow-up ERP study.
Developmental changes in point-light walker processing during childhood : A two-year follow-up ERP study.
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儿童期点光步行者处理的发育变化：一项为期两年的后续 ERP 研究。
DOI：
10.1016/j.dcn.2013.01.002
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Kakigi R.
中科院分区：
文献类型：
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作者：
Hirai M;Watanabe S;Honda Y;Kakigi R.
以24名6-15岁儿童为被试，每隔两年每隔一年测量一次事件相关电位，以研究每个受试者对点光步行者(PLW)和扰乱PLW(SPLW)刺激的神经反应的发育变化。在大约130、200和300-400ms时，在两个枕颞区观察到一个正峰(P1)和两个负峰(N1和N2)。在发育的第一年期间，枕部电极测量的P1成分的幅度和潜伏期都有所下降。PLW刺激引起的N1和N_2负波幅度均显著大于sPLW刺激引起的负波幅度。此外，对于P1-N1波幅，8岁儿童的值显著大于12岁儿童。某些电极的N1和N2潜伏期随着年龄的增长而减少，但没有观察到一致的变化。这些结果表明，所有年龄段的人都可以观察到对PLW的增强电生理反应，即使在12岁的一年中，早期成分也发生了变化。
Event-related potentials were measured in twenty-four children aged 6–15 years, at one-year intervals for two years, to investigate developmental changes in each subject's neural response to a point-light walker (PLW) and a scrambled PLW (sPLW) stimulus. One positive peak (P1) and two negative peaks (N1 and N2) were observed in both occipitotemporal regions at approximately 130, 200, and 300–400ms. The amplitude and latency of the P1 component measured by the occipital electrode decreased during development over the first one-year period. Negative amplitudes of both N1 and N2, induced by the PLW stimulus, were significantly larger than those induced by the sPLW stimulus. Moreover, for the P1–N1 amplitude, the values for the eight-year-old children were significantly larger than those for the twelve-year-old children. N1 and N2 latency at certain electrodes decreased with age, but no consistent changes were observed. These results suggest that enhanced electrophysiological responses to PLW can be observed in all age groups, and that the early components were changed even over the course of a single year at the age of twelve.