Catch trials in force field learning influence adaptation and consolidation of human motor memory.
Catch trials in force field learning influence adaptation and consolidation of human motor memory.
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DOI：
10.3389/fnhum.2014.00231
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发表时间：
2014
影响因子：
2.9
通讯作者：
Stein T
中科院分区：
文献类型：
--
作者：
Stockinger C;Focke A;Stein T
力场研究是研究运动适应和巩固的常用工具。因此，受试者通常使他们的伸展运动适应由机器人设备引起的力场扰动。在这种情况下，所谓的捕捉试验，其中干扰力被随机关闭，通常用于检测运动适应的后效。然而，捕捉试验也会产生突然的大动作错误，这可能会影响动作适应和巩固过程。然而，捕捞试验的具体影响还远不清楚。因此，本研究的目的是调查在力场实验中，捕捉试验对运动适应和巩固的影响。因此，105名受试者调整了他们的伸手动作，以适应机器人产生的力场。测试组将他们的伸展运动适应于力场A，然后学习第二个干扰力场B，然后重新测试A（阿坝）。对照组未暴露于力场B（AA）。为了研究不同的捕获试验比率的影响，受试者在力场适应过程中接受捕获试验，概率为0，10，20，30或40%，取决于组。首先，运动适应的结果显示，不同的捕获率试验组之间的显着差异。随着接球试验次数的增加，受试者的运动表现下降，受试者准确预测力场的能力受损，因此内部模型的形成也受损。其次，我们的研究结果表明，适应捕捞试验可以影响以下的巩固过程所示的部分减少干扰。在这里，最佳捕获试验比率为30%。然而，合并的检测似乎是有偏见的应用性能的措施。
Force field studies are a common tool to investigate motor adaptation and consolidation. Thereby, subjects usually adapt their reaching movements to force field perturbations induced by a robotic device. In this context, so-called catch trials, in which the disturbing forces are randomly turned off, are commonly used to detect after-effects of motor adaptation. However, catch trials also produce sudden large motor errors that might influence the motor adaptation and the consolidation process. Yet, the detailed influence of catch trials is far from clear. Thus, the aim of this study was to investigate the influence of catch trials on motor adaptation and consolidation in force field experiments. Therefore, 105 subjects adapted their reaching movements to robot-generated force fields. The test groups adapted their reaching movements to a force field A followed by learning a second interfering force field B before retest of A (ABA). The control groups were not exposed to force field B (AA). To examine the influence of diverse catch trial ratios, subjects received catch trials during force field adaptation with a probability of either 0, 10, 20, 30, or 40%, depending on the group. First, the results on motor adaptation revealed significant differences between the diverse catch trial ratio groups. With increasing amount of catch trials, the subjects' motor performance decreased and subjects' ability to accurately predict the force field—and therefore internal model formation—was impaired. Second, our results revealed that adapting with catch trials can influence the following consolidation process as indicated by a partial reduction to interference. Here, the optimal catch trial ratio was 30%. However, detection of consolidation seems to be biased by the applied measure of performance.
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影响因子：
3.7
作者：
Levy N;Pressman A;Mussa-Ivaldi FA;Karniel A
通讯作者：
Karniel A
DOI：
10.1007/978-1-4614-5465-6_1
发表时间：
2013-01-01
期刊：
PROGRESS IN MOTOR CONTROL: NEURAL, COMPUTATIONAL AND DYNAMIC APPROACHES
影响因子：
--
作者：
Haith, Adrian M.;Krakauer, John W.
通讯作者：
Krakauer, John W.
影响因子：
1.4
作者：
MCCRACKEN, HD;STELMACH, GE
通讯作者：
STELMACH, GE
影响因子：
2.5
作者：
Osu, R;Burdet, E;Kawato, M
通讯作者：
Kawato, M
影响因子：
2
作者：
Schabowsky, Christopher N.;Hidler, Joseph M.;Lum, Peter S.
通讯作者：
Lum, Peter S.