Measuring Generalization of Visuomotor Perturbations in Wrist Movements Using Mobile Phones
Measuring Generalization of Visuomotor Perturbations in Wrist Movements Using Mobile Phones
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DOI：
10.1371/journal.pone.0020290
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发表时间：
2011-05-24
期刊：
影响因子：
3.7
通讯作者：
Kording, Konrad Paul
中科院分区：
文献类型：
--
作者：
Fernandes, Hugo Liberal;Albert, Mark Vincent;Kording, Konrad Paul
最近在运动控制方面的研究表明，视觉运动的到达旋转具有狭窄的泛化功能：我们在一个方向的运动中学习到的东西只会影响到随后的接近方向的运动。这里我们想测量手腕运动的泛化函数。为了做到这一点，我们让7个实验对象用惯用手拿着手机进行实验。手机内置的加速度传感器提供了一种方便的方式来测量手腕运动和运行行为协议。受试者通过倾斜手机来移动屏幕上的光标。屏幕上朝着训练目标的运动是旋转的，然后我们测量了学习训练方向的旋转如何影响随后在其他方向的运动。我们发现泛化是局部的，类似于视觉运动旋转的泛化模式。
Recent studies in motor control have shown that visuomotor rotations for reaching have narrow generalization functions: what we learn during movements in one direction only affects subsequent movements into close directions. Here we wanted to measure the generalization functions for wrist movement. To do so we had 7 subjects performing an experiment holding a mobile phone in their dominant hand. The mobile phone's built in acceleration sensor provided a convenient way to measure wrist movements and to run the behavioral protocol. Subjects moved a cursor on the screen by tilting the phone. Movements on the screen toward the training target were rotated and we then measured how learning of the rotation in the training direction affected subsequent movements in other directions. We find that generalization is local and similar to generalization patterns of visuomotor rotation for reaching.