単位動作による脳性マヒ児の不自由動作の分析

野口 宗雄

doi:10.4992/jjpsy.45.233

野口宗雄

著者情報

ジャーナルフリー

1974 年 45 巻 5 号 p. 233-241

DOI https://doi.org/10.4992/jjpsy.45.233

詳細

発行日: 1974/12/10 受付日: 1974/02/15 J-STAGE公開日: 2010/07/16 受理日: - 早期公開日: - 改訂日: -
訂正情報
訂正日: 2010/07/16 訂正理由: - 訂正箇所: 論文抄録訂正内容: Wrong : In order to investigate some of the essential features of crippled motion in cerebral palsy children, relationship between their intended (or programmed) and actual movements of the arm was analyzed. In the previous report, the author had defined “unit motion” as a simple specific unit of one-way voluntary motion within a given range making some joint of the body as a pivot. The unit motion used in this study was “elbow flexion”.
Subjects, sitting on a chair, were asked to flex their arm toward their body with their palm up from two starting positions. In Experiment I, the subjects were instructed to put the back of their hand on the knee with the entire arm stretched and then to flex to a maximum of 160°. In Experiment II, the subjects were asked to keep only the forearm part parallel to the floor surface and then to flex. As compared to the starting position of Experiment I, the arm was flexed by approximately 45° at the elbow at the start of each trial. To analyze experimentally how crippled motion occurred, a special apparatus was devised. Small electric bulbs were fixed to various parts of the body (finger, wrist, elbow, shoulder, and head) in such a way that their traces could be photographed. By means of a rapidly rotating shutter which covered the lens of a camera, the traces of movements of various parts of the body were photographically recorded successively as light dots on a film. This enabled the analyses of the crippled motion of C. P. children from two aspects: 1) angular velocity or mean number of light dots in each angle and in each position and 2) the discrepancy between actual movement and the theoretical curve derived from the assumption that the elbow flexion was a circular movement.
Regardless of the difference in the starting position, the characteristics of crippled motion may be summarized as follows:
(a) Light dots gathered or whirled near the starting position, showing the difficulty in the initiation of motion.
(b) Velocity was very high, suggesting the difficulty in slow movement (a short circuit).
(c) The range of discrepancy in each angle was wide: Some of C. P. children showed unauthorized change of the position of elbow, shoulder and other related portions of the body along with the arm-movement.
(d) Light dot delayed at following ranges of angles: Between 30° and 40°, 80° and 90°, and 120° and 130°.
Normal children, on the other hand, showed an angular curve: Velocity gradually increased, passed through a maximum at about 50° and finally fell off. But the arm-movement of the normal subjects also showed deviations from the expected curve at the same angle ranges where C. P. children showed delay in motion. A maximum mean deviation was 5.09.
In Experiment II, subjects were 50 C. P. children, aged from 3 to 19. The light dot delayed between angle ranges of 80° and 90°, and 120° and 130°, as measured from the starting position of Experiment I.
These findings suggest that for C. P. children there must be a guiding programme, an error-correcting system and a feedback system which convert the discrepancies between the plan and the outcome into regulatory signals.
Right : 2 experiments were conducted to find some of the essential features of crippled motion in cerebral, palsy children by analyzing the relationship between their intended and actual movements. S were 75 C.P. and 20 normal children, and were asked to flex their arm toward the body with palm up from two starting positions. The analyses of the movement by means of angular velocity and the discrepancy between the actual and theoretical movements revealed that light dots showing the trace of movement delayed at angles between 30° and 40°, 80° and 90°, and 120° and 130°. Arm-movements of. the normal S also showed deviations from the expected curve at the same angle ranges. These findings suggest that there must be a guiding programme, an error-correcting system and a feedback system which convert the discrepancies between the plan and the outcome into regulatory signals.

抄録

2 experiments were conducted to find some of the essential features of crippled motion in cerebral, palsy children by analyzing the relationship between their intended and actual movements. S were 75 C.P. and 20 normal children, and were asked to flex their arm toward the body with palm up from two starting positions. The analyses of the movement by means of angular velocity and the discrepancy between the actual and theoretical movements revealed that light dots showing the trace of movement delayed at angles between 30° and 40°, 80° and 90°, and 120° and 130°. Arm-movements of. the normal S also showed deviations from the expected curve at the same angle ranges. These findings suggest that there must be a guiding programme, an error-correcting system and a feedback system which convert the discrepancies between the plan and the outcome into regulatory signals.

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