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Volume 39, Issue 1
Displaying 1-7 of 7 articles from this issue
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Yohsuke YOSHIOKA, Takashi ISSHIKI, Shigeyuki OKAZAKI2003 Volume 39 Issue 1 Pages 1-8
Published: February 15, 2003
Released on J-STAGE: March 12, 2010
JOURNAL FREE ACCESSIn this study, an experiment using the method of “Restricting visual field” was consisted in a maze in order to clarified the role of peripheral visual field while walking with way-finding. The following results were obtained: 1) Before learning the route, it is necessary to using peripheral visual field for perceiving a space near body or complexity. However, after learning, we can find characteristic information in a route for arriving at the goal without peripheral visual field. 2) We can do futility fixation by getting the information necessary to walk through a route, “a boundary between the wall and floor” and “a wall beside the body” with peripheral visual field. We also tend to get the “boundary” with central visual field before learning route, after learning, get the “boundary” with peripheral visual field.View full abstractDownload PDF (11740K) -
Yohsuke YOSHIOKA, Takashi ISSHIKI, Shigeyuki OKAZAKI2003 Volume 39 Issue 1 Pages 9-15
Published: February 15, 2003
Released on J-STAGE: March 12, 2010
JOURNAL FREE ACCESSThere are relationships between characteristic behaviors observing while walking through a maze with way finding and the two visual fields, the central visual field and peripheral visual field. In this study, the relationships was tried to clarify by the way-finding experiment using the mask developed for restricting arbitrary area of visual field. The following results were obtained: 1) By using the central visual field, we can walk through a maze without walking into inside of a dead end, and we can notice an entrance of a byway. 2) By using the peripheral visual field, we can reach the destination without walking backward long distance. 3) By using both of the two visual field, we can walk through a maze without stopping walking and touching walls.View full abstractDownload PDF (9543K) -
Akihiro MATAKE, Hironori SATO, Akira MIURA, Haruhiko SATO, Yoshiyuki F ...2003 Volume 39 Issue 1 Pages 16-21
Published: February 15, 2003
Released on J-STAGE: March 12, 2010
JOURNAL FREE ACCESSThe weakening of the biting force restrains growth of the jaw area, and creates the risk not only of disease of the jaw and face region but may also cause ill health and dysfunction of the whole body. The purpose of this study was to investigate the functions of the masseter muscle, which, morphologically, is known to be the largest structure with the greatest biting force among the masticatory muscles. First, the functions of the masseter muscle were investigated, using ultrasonography to measure the muscle cross sectional area, where both the right and left masseter muscle are slackened and strained. Second, through the use of a strain gauge, the strength of occlusion at the location where one top tooth and one bottom tooth were occluded was measured. Third, the relationship between the cross sectional area of the masseter muscle and biting force was examined. Results showed that when the tension in the masseter muscle increased as a result of the biting force, the value of muscle thickness and the cross sectional area increased while the value of muscle width decreased. Furthermore, the maximum biting force was 683.7±204.9N (CV=0.299) on the right side and 693.6±208.7N (CV=0.300) on the left side. A comparison of right and left did not reveal a significant difference. However, from standard deviation and a variation index of the biting force value, it was shown that individual differences were large. In addition, a significant and positive correlation between the biting force and all masseter morphometry values for the right and left sides was found. Finally, results showed that the size of the masseter form influences the expression of the biting force.View full abstractDownload PDF (3167K) -
Rina MORIYAMA, Nobutoshi YAMAZAKI2003 Volume 39 Issue 1 Pages 22-29
Published: February 15, 2003
Released on J-STAGE: March 12, 2010
JOURNAL FREE ACCESSDue to the limited movements possible in a restricted, bed-ridden position, conventional bedside furniture can be difficult to use. Patients are often at a loss for where to place items such as tissues, thermometers and portable radios. In order to improve this situation, working area and field-of-view in the supine position were measured for 10 male and 10 female subjects. Suitable positions for placing such necessities existed within the area framed by the arcs described by the fingertip and wrist as the upper limb was abducted from 30° to 70°. The height of the surface for placing objects should be adjustable from 150mm to 200mm above the bed surface. Based on these limitations, a cabinet (300mm wide×200mm deep×250mm high) was designed to move on a rail and rotate around a stem with an eccentric center, so that it could be available at a suitable location and moved smoothly out of the way as necessary. With these features, the developed cabinet is “user-friendly” for bed-ridden individuals and does not interfere with care activities or conventional furniture. Assisting self-support during periods of bed rest, the cabinet was highly regarded by patients, nurses and medical staff during trial use.View full abstractDownload PDF (10735K) -
Mitsuhiko KARASHIMA, Tomoyuki YAMAZAKI2003 Volume 39 Issue 1 Pages 30-37
Published: February 15, 2003
Released on J-STAGE: March 12, 2010
JOURNAL FREE ACCESSDownload PDF (6175K) -
Kunio HORIUCHI, Kazuo AOKI2003 Volume 39 Issue 1 Pages 38-41
Published: February 15, 2003
Released on J-STAGE: March 12, 2010
JOURNAL FREE ACCESSDownload PDF (4894K) -
Tetsuro SAEKI, Shizuma YAMAGUCHI, Makoto NAKAMURA2003 Volume 39 Issue 1 Pages 42-45
Published: February 15, 2003
Released on J-STAGE: March 12, 2010
JOURNAL FREE ACCESSDownload PDF (480K)
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