目的 通过脑电EEG测试找出操作事件中影响情绪的界面及产生的原因，为交互原型设计提供科学依据。方法 依据Lange二维情绪分类模型，测试被试操作交互原型时情绪的脑电EEG信号，提取前额区α波的脑电功率，经过消除脑电伪迹和快速傅里叶变换处理后得到脑电功率谱和不同频率的脑电功率值作为愉悦度的指标。结论 发现激发情绪的原因是任务的可理解性、吸引性以及操作步骤。

Through the EEG test to find out the interface affected by emotion in operation event and the cause, it will provide a scientific basis for interactive prototype design. On the basis of Lange two-dimensional emotion classification model, test subjects' emotional EEG signals when operating interaction prototypes, extract the EEG power of alpha wave in forehead area, after eliminate EEG artifact and fast Fourier transform processing, the EEG power spectrum and different frequencies of EEG power value can be taken as the index of degree of pleasure. We find that the reason of emotional arousal is the understandability, attractiveness and operation steps of the task.