The Japanese Journal of Ergonomics
Online ISSN : 1884-2844
Print ISSN : 0549-4974
ISSN-L : 0549-4974
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Volume 31, Issue 5
Displaying 1-5 of 5 articles from this issue
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  • Influence of age on steering control performance
    Toichi SAWADA, Yasuhei OGUCHI
    1995 Volume 31 Issue 5 Pages 323-330
    Published: October 15, 1995
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.31.323
    JOURNAL FREE ACCESS
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    The experimental studies were carried out so as to find the influence of elderly drivers regarding the characteristics steering control through the use of a steering simulator. The experiment measured the control action and discriminative reaction time in subjects from young to old. The results obtained are as follows: (1) In the case of the proportional steering system, the influence of age on steering performance was very small. (2) In the case of the steering system of the integral element required to perform the rate action, the control performance of the old declined remarkably, and it had large individual differences. (3) Examining using a simulation model in the steering control action of the subjects, the rate action decrease with age showed a peek at 20s, and over 70s, and control was carried out mostly using proportional action. (4) The discriminative reaction time during the steering control showed the shortest time for those in their 20s and became longer, and for those over 70s it suddenly increased.
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  • Relationships between individual differences of the strategy in the verification and subjective mental workload
    Satoshi SHIBATA, Hajime HARADA, Tetsuo KATSUURA, Yasuyuki KIKUCHI
    1995 Volume 31 Issue 5 Pages 331-336
    Published: October 15, 1995
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.31.331
    JOURNAL FREE ACCESS
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    This study investigates the relationship between the response strategy in verification and the subjective MWL (Mental Workload) as one guideline of adjustment of individual differences in MWL. Four tasks consisting of combination of letters and signs, were applied in this experiment. The response strategies are identified as a linguistic, a spatial, or a mixed strategy (MacLeod and Hunt, 1978). The results are as follows;
    (1) There are individual differences in response strategy for the same task and subjective MWL is higher in the linguistic group than in any other groups.
    (2) It is suggested that subjective MWL would be most greatly reduced, if MWL can be reduced at the time of verification in a spatial group, and at the time of comprehension in a linguistic group.
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  • The relationship between musical and visual expressions represented in television commercials
    Comparison between Japan and Korea
    Shin'ichiro IWAMIYA
    1995 Volume 31 Issue 5 Pages 337-345
    Published: October 15, 1995
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.31.337
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    The relationship between musical and visual expressions represented in Japanese and Korean television commercials is examined. The categories of musical expressions (tempo, loudness, tonality, rhythm, and instrumentation), visual expressions (foreground of visual image, its behavior, and their background), and subject of commercials are analyzed statistically. The combinations of musical and visual expressions in both Japanese and Korean commercials are classified into four types; dynamic, gentle, daily, and anti-daily expressions. The combination of music and motion pictures is considered to be determined by similar principals in both countries. The subjective rating experiments of typical examples of these four-type commercials shows that they are also psychologically dynamic, gentle, daily, and anti-daily.
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  • The role of the joints of the human arm in controlling the bow-force of violin playing
    Koji SHIBUYA, Shigeki SUGANO
    1995 Volume 31 Issue 5 Pages 347-354
    Published: October 15, 1995
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.31.347
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    Human can control the forces on his hands with the finger-arm coordination. This study aims to clarify the role of the joints of human arm in controlling the bow-force of the violin playing which is regarded one of the examples of finger-arm coordination. In the experiments, down-bow and up-bow which are the most basic play in violin playing are played with three different bow pressure by two professional players and two inexperienced persons. The bowing motions were measured by 3D-Video Tracker System, and the bow-force was measured by strain gauges on the bow. The torques of their right arm joints were calculated by the Newton-Euler method. From the analysis of the joint torques, it is clarified that the professional players can use their wrist to control bow-force but the inexperienced persons can not, and the role of the shoulder joints and wrist joints of professional players are divided clearly.
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  • Study on emotional evaluation of robot motions based on galvanic skin reflex
    Ryojun IKEURA, Hideki OTSUKA, Hikaru INOOKA
    1995 Volume 31 Issue 5 Pages 355-358
    Published: October 15, 1995
    Released on J-STAGE: March 11, 2010
    DOIhttps://doi.org/10.5100/jje.31.355
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