基于ERP技术的数字界面布局认知与评估

Cognition and evaluation of digital interface layouts based on event-related potential technique

为了探索用户对数字界面不同布局形式的比较和评估的认知过程,根据事件相关电位技术,采用较高相似度界面布局与较低相似度界面布局的Oddball实验范式,并结合脑电数据与行为数据,分析比较了2种相似度条件下N2b成分、P300成分的波幅和潜伏期变化情况.结果表明:在靶刺激认知早期阶段,N2b成分的波幅与靶刺激和标准刺激的偏差程度呈正相关关系;进入较深层次加工过程后,靶刺激所诱发的P300成分的波幅与靶刺激和标准刺激的相似程度呈正相关关系.研究结论可拓展应用于界面的迭代评估过程中,为实际项目中数字界面产品风格继承性评估提供重要的参考依据.

To investigate the cognitive processes of the comparison and the evaluation to digital interface for different layout forms,according to event-related potential（ ERP） technique,by using the Oddball experimental paradigms for the layout form with relatively higher similarity and those with relatively lower similarity,the changes of the amplitudes and the latencies of N2 b and P300 under these two similarity conditions were analyzed and compared by combining the neural data with behavioral data. The results reveal that in the earlier target cognitive stage,the amplitude of N2 b is positively related to the deviation of the target stimuli from the standard stimuli. In the deeper processing process,the amplitude of P300 elicited by the target stimuli is positively related to the similarity between the target stimuli and the standard stimulus. The conclusion can be applied in the iteration and evaluation process for interfaces,providing important references to evaluate the heritage of the digital interface product style in practical projects.