Active Long Fixation Correlates with the Formation of Long-Term Memory and Its Computational Modeling

Jin-Hwa Kim and Byoung-Tak Zhang

Abstract

Enhanced prospects for the application of eyewear demands the study on the eye movements beyond the reading task. We investigated the eye movements of the subjects watching the kids video. The characteristics of the eye movements are analyzed by the observation of the marginal distribution of fixation durations. The marginal distribution of fixation durations for the video stimuli has a different shape to that for the reading task. The video stimuli causes the fast-falling period for the shortest fixation durations unlike to that for reading, which has the slow-rising and its peak at around 180 ms. The relatively undemanding load for the cognitive process and the spatio-temporal constraints of given stimuli may attribute to this period. First, we conducted the long-term memory test of whether fixation duration correlates with long-term memory. Second, we focused on the long fixations, and classified its visual constraints into three types. As a result, the fixation duration is not important, however, among the long fixation types, the long fixations which are voluntarily engaged associate with long-term memory than any other types. Finally, we propose the computational modeling to predict those active long fixations, which may provide the way to effectively summarize the story of a given video.