실시간 뇌파반응을 이용한 주제관련 영상물 쇼트 자동추출기법 개발연구 = ERP의 N400 및 P600 가설검증을 중심으로

다국어 초록 (Multilingual Abstract)

To obtain good summarization algorithms, we need first understand how people summarize videos. Semantic gap refers to the gap between semantics implied in video summarization algorithms and what people actually infer from watching videos. We hypothesized that ERP responses to real time videos will show either N400 effects to topic-irrelevant shots in the 300∼500ms time-range after stimulus on-set or P600 effects to topic-relevant shots in the 500∼700ms time range. We recruited 32 participants in the EEG experiment, asking them to focus on the topic of short videos and to memorize relevant shots to the topic of the video. After analysing real time videos based on the participants’ rating information, we obtained the following t-test result, showing N400 effects on PF1, F7, F3, C3, Cz, T7, and FT7 positions on the left and central hemisphere, and P600 effects on PF1, C3, Cz, and FCz on the left and central hemisphere and C4, FC4, P8, and TP8 on the right. A further 3-way MANOVA test with repeated measures of topic-relevance, hemisphere, and electrode positions showed significant interaction effects, implying that the left hemisphere at central, frontal, and pre-frontal positions were sensitive in detecting topic-relevant shots while watching real time videos.

목차 (Table of Contents)

• ABSTRACT
• 1. 서론
• 2. 이론적 배경
• 3. 실험설계
• 4. 분석결과
• 5. 논의 및 결론
• REFERENCE