电生理测量在用户体验中的应用

用户体验是用户在使用产品过程中的完整感受, 电生理技术可用于测量用户在产品使用过程中的实时体验。皮电、心电和脑电是用户体验研究领域最典型的三类电生理指标, 主要涉及用户体验过程中认知和情感状态的测量：在皮电相关指标中, 皮肤电导水平能有效地反映用户使用产品时的情绪唤醒度和认知努力程度; 在心电相关指标中, 心率对用户的情绪体验敏感, 而心率变异性对用户的心理负荷变化敏感; 在脑电相关指标中, α波和β波是用户情绪变化和心理负荷的有效指标。目前, 这些指标在情绪类别的识别上还缺乏敏感性, 并且在实际应用方面也存在各自的优缺点。未来的研究突破点可在三个方面展开：一是探讨用户体验过程中情绪类别的识别, 二是整合多种指标对情绪状态进行实时的识别, 三是关注美感体验的生理测量。

Electrophysiological Measures Applied in User Experience Studies

User experience refers to a person's perceptions and responses from their interaction with products. Electrophysiological techniques offer a possibility to measure user experience in real time. Three electrophysiological measures, Electrodermal activity (EDA), Electrocardiogram (ECG) and Electroencephalogram (EEG), were reviewed focusing on studies related to human cognitive and emotional state. Previous studies have found that the Skin conductance level (SCL) is related with emotional arousal level and cognitive engagement in EDA; Heart Rate (HR) is sensitive to emotional arousal and Heart Rate Variability (HRV) is sensitive to mental workload in ECG; and alpha and beta waves in EEG are valid indicators of emotional state and mental workload. However, these indices are not sensitive to the valence and categories of emotion. Future research could be developed in three aspects: identifying the valence and categories of emotion in user experience, integrating and synchronizing multiple indicators to identify emotional state in real time, and measuring aesthetic experience by physiological technology.