Distinct haptic cues do not reduce interference when learning to reach in multiple force fields.
Distinct haptic cues do not reduce interference when learning to reach in multiple force fields.
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DOI：
10.1371/journal.pone.0001990
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发表时间：
2008-04-23
期刊：
影响因子：
3.7
通讯作者：
Gribble, Paul L.
中科院分区：
文献类型：
--
作者：
Cothros, Nicholas;Wong, Jeremy;Gribble, Paul L.
以前的研究表明，学习适应达到新的力量存在的运动表明，学习多个力场是容易受到干扰。最近有人提出，力场学习可能反映了对操纵新物体的学习。在这个理论框架内，力场学习中的干扰可能是与抓握相关的静态触觉或触觉提示的结果，这些提示无法指示变化的动态条件。不同的触觉提示（例如，与不同的抓取对象相关联的触觉提示）信号运动要求并促进多种运动技能的学习和保持的想法先前在力场学习的背景下尚未被探索。本研究测试了当两个不同的力场与握在手中的不同形状的物体相关联时，干扰可以减少的可能性。人类受试者被指示引导光标的目标，同时抓住一个机器人manipulgiant，这适用于两个相反的速度依赖卷曲领域的手。对于一组受试者，操纵器配备了两个不同的手柄，每个力场一个。相对于在两个力场中使用相同手柄的对照组，在这些受试者中未观察到干扰衰减。这些结果表明，在目前的学习范式的背景下，触觉提示本身是不足以减少干扰，促进学习多力场。
Previous studies of learning to adapt reaching movements in the presence of novel forces show that learning multiple force fields is prone to interference. Recently it has been suggested that force field learning may reflect learning to manipulate a novel object. Within this theoretical framework, interference in force field learning may be the result of static tactile or haptic cues associated with grasp, which fail to indicate changing dynamic conditions. The idea that different haptic cues (e.g. those associated with different grasped objects) signal motor requirements and promote the learning and retention of multiple motor skills has previously been unexplored in the context of force field learning. The present study tested the possibility that interference can be reduced when two different force fields are associated with differently shaped objects grasped in the hand. Human subjects were instructed to guide a cursor to targets while grasping a robotic manipulandum, which applied two opposing velocity-dependent curl fields to the hand. For one group of subjects the manipulandum was fitted with two different handles, one for each force field. No attenuation in interference was observed in these subjects relative to controls who used the same handle for both force fields. These results suggest that in the context of the present learning paradigm, haptic cues on their own are not sufficient to reduce interference and promote learning multiple force fields.
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影响因子：
64.8
作者：
Gribble, PL;Scott, SH
通讯作者：
Scott, SH
DOI：
10.1016/0926-6410(95)90014-4
发表时间：
1995-10-01
期刊：
COGNITIVE BRAIN RESEARCH
影响因子：
--
作者：
ROBYBRAMI, A;BURNOD, Y
通讯作者：
BURNOD, Y
影响因子：
2.6
作者：
LEDERMAN, SJ;KLATZKY, RL
通讯作者：
KLATZKY, RL
DOI：
10.1073/pnas.93.9.3843
发表时间：
1996-04-30
影响因子：
11.1
作者：
Gandolfo, F;MussaIvaldi, FA;Bizzi, E
通讯作者：
Bizzi, E
影响因子：
9.8
作者：
Krakauer JW;Mazzoni P;Ghazizadeh A;Ravindran R;Shadmehr R
通讯作者：
Shadmehr R