Pointing with the ankle: the speed-accuracy trade-off

被引：19

作者：

Michmizos, Konstantinos P. ^{[1
]}

Krebs, Hermano Igo ^{[1
,2
]}

机构：

[1] MIT, Dept Mech Engn, Cambridge, MA 02139 USA

[2] Univ Maryland, Sch Med, Dept Neurol, Div Rehabilitat Med, Baltimore, MD 21201 USA

来源：

EXPERIMENTAL BRAIN RESEARCH | 2014年 / 232卷 / 02期

关键词：

Fitts' law; Speed-accuracy trade-off; Ankle; Pointing movements; Motor control; FITTS LAW; INFORMATION CAPACITY; MOVEMENT; MOTOR; CHILDREN; DISCRETE; ROBOT; TASK; AMPLITUDE; HAND;

D O I：

10.1007/s00221-013-3773-0

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

This study investigated the trade-off between speed and accuracy in pointing movements with the ankle during goal-directed movements in dorsal-plantar (DP) and inversion-eversion (IE). Nine subjects completed a series of discrete pointing movements with the ankle between spatial targets of varying difficulty. Six different target sets were presented, with a range of task difficulty between 2.2 and 3.8 bits of information. Our results demonstrated that for visually evoked, visually guided discrete DP and IE ankle pointing movements, performance can be described by a linear function, as predicted by Fitts' law. These results support our ongoing effort to develop an adaptive algorithm employing the speed-accuracy trade-off concept to control our pediatric anklebot while delivering therapy for children with cerebral palsy.

引用

页码：647 / 657

页数：11

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