Effect of Different Measurement Tasks on the Frequency of Microsaccades

DOI Web Site Web Site 参考文献17件
  • Ohara Toumi
    Electrical and Computer Engineering, Graduate School of Engineering, Toyama Prefectural University
  • Kinoshita Fumiya
    Electrical and Computer Engineering, Graduate School of Engineering, Toyama Prefectural University

この論文をさがす

説明

<p>In recent years, several attempts have been made to quantitatively evaluate covert attention using microsaccades. However, several unclear aspects exist regarding the measurement method of microsaccades, and a unified analysis method does not exist. Therefore, the current status is such that the interpretation of the results is divided among the research groups. To address this problem, empirical studies on microsaccades must be accumulated and measured and evaluated using a unified method. Therefore, in this study, to accumulate empirical studies on microsaccades, an experiment was conducted to investigate the effect of the presence or absence of gazing at a fixation point on the interval of occurrence of microsaccades in a measurement task. The participants were 15 healthy young people, and we compared the following two types of measurement tasks. Task-I: The participants freely visually searched a white wall 1 m away for 120 s. Task-II: The participants gazed at a fixation point located 1 m ahead at eye level for 120 s. For the microsaccade detection algorithm, we adopted a method imitating the EK method proposed by Engbert and Kliegl in 2003, divided 120 s of time-series data and analyzed it every 2 s, and subsequently evaluated the time-series data for the entire 120 s by concatenating them. Consequently, the interval of occurrence of microsaccades during Task-II decreased by more than 1 Hz compared with that of Task-I (p<0.05). The study confirmed that the presence or absence of gazing at the fixation point during microsaccade measurement affected the interval of occurrence of microsaccades.</p>

収録刊行物

参考文献 (17)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ