Hand-use and tool-use in grasping control.
Hand-use and tool-use in grasping control.
复制标题
抓取控制中的手使用和工具使用。
DOI：
10.1007/s00221-014-4053-3
复制
发表时间：
2014
影响因子：
2
通讯作者：
Itaguchi Y and Fukuzawa F
中科院分区：
文献类型：
--
作者：
大井赤亥;大園誠;新倉貴仁;神子島健;松井隆志;和田悠;和田悠;和田悠;和田悠;広見正行;広見正行;守谷 順，飯島 雄大，佐々木 淳，森 正樹，西口 雄基，浅井 智久，毛利 伊吹，大平 英樹，杉浦 義典;栗崎周平・黄太熙;Shuhei Kuizaki and Taehee Whang;Shuhei Kuizaki and Taehee Whang;Shuhei Kurizaki and Taehee Whang;Shuhei Kurizaki and Taehee Whang;Marisa Kellam;Marisa Kellam;小宮友根;畑山要介;畑山要介;畑山要介;Itaguchi Y and Fukuzawa F
本研究的目的是阐明手和工具抓取控制的潜在机制。我们假设有一个单一的原理控制抓取控制，而不考虑其效应器，并且效应器的先前经验程度决定了孔径控制的平稳性。八名参与者用四种不同的效应器完成了“伸手抓握”任务：食指和拇指、中指和拇指、筷子和剪刀状工具。尽管我们使用了不同的效应器，具有较大的机械变化和不同程度的先前使用，但最大抓取孔径作为物体大小的函数进行缩放，并且在所有四种类型的抓取运动中几乎在相同的时间出现。此外，在不同的抓取条件下，到达时间没有显著差异。然而，不同的效应体，孔径剖面的平台持续时间不同。在不熟悉的剪刀样工具抓取条件下，高原持续时间最长。不熟悉的用拇指和中指抓握与熟悉的用筷子抓握之间没有差异。用拇指和食指熟悉的手握的平稳期最短。这些结果支持了这样一种观点，即在运动控制中，手使用和工具使用之间存在与效应器无关的连续性，作为先前使用程度的函数，而不是传统上假设的它们之间的二分法。
The goal of this study was to elucidate the underlying mechanisms of hand and tool grasping control. We assumed that there is a single principle-governing grasping control irrespective of its effectors and that the degree of prior experience of the effector determines the smoothness of aperture control. Eight participants performed a reach-to-grasp task with four different effectors: index finger and thumb, middle finger and thumb, chopsticks, and a scissor-like tool. Although we employed different effectors with large mechanical variations and different degrees of prior use, maximum grip aperture was scaled as a function of object size and appeared at almost the same timing in all four types of grasping movements. Moreover, reaching time did not substantially differ among grasping conditions. However, plateau duration of the aperture profile differed by effector. Plateau duration was the longest in the unfamiliar scissor-like tool grasping condition. There was no difference between the unfamiliar hand-use grasp with the thumb and the middle finger and the familiar tool-grasp with chopsticks. The familiar hand-use grasp with the thumb and the index finger had the shortest plateau duration. These results supported the idea that there is an effector-independent continuity between hand-use and tool-use in motor control as a function of prior degree of use, rather than the conventionally assumed dichotomy between them.