Relation between gravitational and arm-movement direction in the mechanism of perception in bimanual steering
Relation between gravitational and arm-movement direction in the mechanism of perception in bimanual steering
复制标题
双手转向感知机制中重力与手臂运动方向的关系
作者：
Taiji Sakajiri;Yoshihiro Tanaka;A. Sano
本文介绍了双手转向中相对于左右臂运动的相反方向的重力的影响。我们开发了一个模拟转向系统，允许独立的左，右手转向和扭矩介绍在一个单一的轴上，和独立的测量每只手施加的转向力。在转向力测量实验中，左系统单元和右系统单元被机械地组合以用作单个转向单元。对参与者用左手和右手施加的力的测量显示，在人类双手转向中，随着重力移动的手臂施加的转向力大于逆着重力移动的手臂。在转向力辨别实验中，该系统被机械地配置为在左和右转向单元的功能以及不同的左侧和右侧转向扭矩的呈现方面提供独立性。然后询问每个参与者在双手转向期间是否感觉到转向力在左侧或右侧更大。这个实验的结果表明，左臂和右臂在辨别阈值上没有差异，但确实揭示了一种感知偏差，即在重力作用下手臂运动中施加的力被认为比对抗重力施加的力小。此外，测得的力和从获得的感知偏差预测的力之间没有显著差异。
This paper presents the effects of the opposing directions of gravity relative to right- and left-arm movement in bimanual steering. We developed a simulated steering system that permits independent left- and right-hand steering and torque presentations on a single axis, and independent measurements of the steering force exerted by each hand. In a steering force measurement experiment, left and right system units were mechanically combined to function as a single steering unit. Measurements of the force exerted by the participants with their left and right hands revealed that in human bimanual steering, the arm moving with gravity exerts a larger steering force than the one moving against gravity. In a steering force discrimination experiment, the system was mechanically configured to provide independence in both the function of the left and right steering units and the presentation of different left- and right-side steering torques. Each participant was then asked whether the steering force was felt to be larger on the left or the right during bimanual steering. The results of this experiment showed no difference between the left and the right arm in the discrimination threshold, but did reveal a perceptual bias in which the forces exerted in arm movements with gravity were perceived as being smaller than the forces exerted against gravity. Furthermore, there was no significant difference between the measured force and the force that would be predicted from the obtained perceptual bias.
省力感和单关节运动控制两种模型。
DOI：
10.3109/08990229509093667
发表时间：
1995
期刊：
Somatosensory & motor research.
影响因子：
--
作者：
Burgess,PR;Cooper,TA;Gottlieb,GL;Latash,ML
通讯作者：
Latash,ML