VDT作業における眼精疲労と中枢性ストレスの検討  [in Japanese] EFFECTS OF VISUAL AND MENTAL STRAIN ON VDT PERFORMANCE  [in Japanese]

Access this Article

Author(s)

    • 神代 雅晴 KUMASHIRO Masaharu
    • 産業医科大学医学部人間工学教室 Department of Human Factors Engineering, School of Medicine, University of Occupational and Environmental Health
    • 三上 行生 MIKAMI Koki
    • 北海道工業大学工学部経営工学科 Department of Industrial Engineering, Hokkaido Institute of Technology
    • 長谷川 徹也 HASEGAWA Tetsuya
    • 産業医科大学医学部人間工学教室 Department of Human Factors Engineering, School of Medicine, University of Occupational and Environmental Health

Abstract

The progression of visual and mental strain in VDT work was investigated through an experimentally-designed VDT task providing a number of stressors including pacing, repetition, judgment and output decisions. We measured the effects of CFF (critical fusion frequency), TAF (the ability to maintain concentration), EEG (electroencephalogram) and near-point accommodation of various changes in the duration of the testing period. The subjects were seven male university students who performed single multiplication problems at a rate of 60 per minute. The problems were presented to them on a CRT screen and on paper for periods of 90 min each.<br>The results obtained were as follows;<br>1) CFF values and near-point accommodation of VDT performance were significantly decreased compared to Non-VDT's as a control. The TAF test showed that the mental strain in a VDT task is greater than that in a Non-VDT task.<br>2) CFF values of VDT performance showed a tendency to decline in the 30th min after commencement, but in the 60th min and thereafter a significant lowering was noticed.<br>3) In TAF and near-point accommodation of VDT performance, the greatest decline was in the 60th min, and this was significantly reduced only immediately after the work period.<br>4) CFF values and near-point accommodation were not recovered after 60 min from the end of a 90 min VDT task. However, TAF·L values recovered in the 30th min after VDT performance.<br>5) The peak level of alpha waves from the parietal region moved toward the slow alpha band with the elapse of VDT task time, but returned [or reverted] to the initial state 30 min after the test period ended.

Journal

  • Sangyo Igaku

    Sangyo Igaku 26(2), 105-111, 1984

    Japan Society for Occupational Health

Cited by:  3

Codes

  • NII Article ID (NAID)
    110006643778
  • NII NACSIS-CAT ID (NCID)
    AN00098250
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    0047-1879
  • NDL Article ID
    2999800
  • NDL Source Classification
    SC221(衛生学・公衆衛生)
  • NDL Source Classification
    ZS17(科学技術--医学--衛生学・公衆衛生)
  • NDL Call No.
    Z19-308
  • Data Source
    CJPref  NDL  NII-ELS  J-STAGE 
Page Top