歯科ユニットに対するビジコンアイカメラを用いた視知覚分析 : 第1報 術者の眼球運動 Analysis of Visual Perception of The Dental Unit With The Visicon Eye-Camera : Report 1 : Dentist' Eye Movement

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著者

    • 島田 路征 SHIMADA Michiyuki
    • 日本歯科大学新潟歯学部小児歯科学教室 Department of Pediatric Dentistry, The Nippon Dental University, School of Dentistry at Niigata
    • 城山 博 SHIROYAMA Hiroshi
    • 日本歯科大学新潟歯学部小児歯科学教室 Department of Pediatric Dentistry, The Nippon Dental University, School of Dentistry at Niigata
    • 下岡 正八 SHIOMOOKA Shyohachi
    • 日本歯科大学新潟歯学部小児歯科学教室 Department of Pediatric Dentistry, The Nippon Dental University, School of Dentistry at Niigata

抄録

歯科ユニット(ユニット)をテスト画像化し,ユニットに対する既知性のある術者に提示し,ビジコンアイカメラを用いて,どのようにそれを見るのかを術者の眼球運動を測定し,科学的に分析し以下の結論を得た.<BR>1.初回停留部位,初回停留点までの視線の走査,停留回数,停留時間よりユニットの構造的符号化,そして再認が行われ,歯科ユニットを一体として見ていた.<BR>2.全停留点の分布より,術者は自己の身体を基準としてユニットの大きさを正しく認知している可能性が示唆された.<BR>3.距離の短いサッケードで背景よりもユニットの内部を多く走査し,長いサッケードでユニットと背景を走査していた.<BR>4.ユニットを決まった走査路で走査する者が多かった.<BR>5.術者の下方に向けた視線からは,テーブルの上やチェアー上の小児の顔と身体についての情報も集めやすいことがわかった.

With an eye to casting light on the visual perception on of the dental clinicians, a photographic image of a dental unit(the unit) reproduced on the screen was shown to dentist. While the subject dentists were looking at the image of the unit, which is, of course, familiar to them, we measured their eye movements using a Visicon Eye-camera. The data thus obtained were scientifically analyzed. The following is a summary of our findings.<BR>1. The component of the unit where the initial points of fixation were found, the scanning of the eyes before resting on the initial fixation points, the frequency of rests and the duration of fixation -all these considered, it appeared that there was a tendency for the subjects to encode what they saw in the structure of the unit, and reconstruct its image, suggesting they had looked at the unit in its entirety.<BR>2. The distribution of all of the fixation points also suggested that the subjects had perceived the size of the object correctly using their own stature as a yardstick for judgment.<BR>3. The saccadic movements from one fixation point to another were small, when the subjects were running their eyes over the unit. On the other hand, the movements were large, when they were looking beyond the unit.<BR>4. In many subjects, when they scanned the unit, their eyes moved following a certain fixed path.<BR>5. With the eyes of the operators turned downward, it would not be difficult to collect a much information about items on the working table and the patient's face and body on the chair.

収録刊行物

  • 小児歯科学雑誌

    小児歯科学雑誌 35(3), 453-463, 1997-06-25

    一般社団法人 日本小児歯科学会

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各種コード

  • NII論文ID(NAID)
    10013867360
  • NII書誌ID(NCID)
    AN00116228
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    05831199
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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