不同范围提示下儿童视觉空间注意的ERP研究

An ERP Study of Children's Visual Spatial Attention to Different Spatial Scaling Cues

目的:研究儿童在不同范围提示下视觉空间注意的事件相关电位(ERP)特征。方法:采用"提示-目标"的视觉实验范式,以圆圈提示不同等级的搜索范围,对14名儿童进行检测。通过ERP技术分析儿童不同空间注意等级的早成分。结果:随提示范围的减小,反应时加快,后部P1和N1波幅增大,前部P2波幅减小。结论:在空间注意加工的早期阶段,儿童依赖提示等级的有效性调动脑资源;而晚期阶段需要额外的脑资源。

Objective： To study the characteristic of children＇s Event-Related Potentials （ERP） by visual spatial attention to different spatial scaling cues. Methods： The ＂cue-target＂ experimental paradigm was adopted, and the attended range was cued by different circles. The subjects included fourteen health children. Results： The reaction time became shorter with the decrease of the cue scale, while P1 and N1 components amplitudes increased, P2 components amplitudes decreased. Conclusion： In the early stages of processing of spatial attention, children rely on the effectiveness of prompt mobilization of the brain resources; and the later stages of the brain requires additional resources.