Selection Criteria for Preparatory Object Rotation in Manual Lifting Actions
Selection Criteria for Preparatory Object Rotation in Manual Lifting Actions
复制标题
手动提升动作中预备物体旋转的选择标准
DOI：
10.1080/00222890903269195
复制
发表时间：
2009
影响因子：
1.4
通讯作者：
N. Pollard
中科院分区：
文献类型：
--
作者：
Lillian Y. Chang;R. Klatzky;N. Pollard
摘要 参与者握住罐子的手柄举起罐子，同时在盖子上平衡一个球。实验 1 允许物体在提升之前旋转。举升舒适区是通过举升时物体方向的变化来测量的；它的大小取决于物体的质量和所需的任务精度。根据不同物体方向的测量，预提升旋转量与提升能力的变化相关。实验 2 需要直接抓握，无需预先旋转。任务完成时间和成功率下降，初始物体定向影响预举时间。结果表明，从舒适区提升会产生更强劲的性能，但代价是完成速度较慢；此外，当强制执行直接抓握时，物理旋转可以被心理规划所取代。
ABSTRACT Participants lifted a canister by its handle while balancing a ball on the lid. Experiment 1 allowed object rotation prior to lifting. A lifting comfort zone was measured by the variability in object orientation at lift; its size depended on the object mass and required task precision. The amount of prelift rotation correlated with the resulting change in lifting capability, as measured for different object orientations. Experiment 2 required direct grasping without preparatory rotation. Task completion time and success rate decreased, and initial object orientation affected prelift time. Results suggest that lifting from the comfort zone produces more robust performance at a cost of slower completion; moreover, physical rotation could be replaced by mental planning when direct grasping is enforced.