Conditions for interference versus facilitation during sequential sensorimotor adaptation
Conditions for interference versus facilitation during sequential sensorimotor adaptation
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DOI：
10.1007/s002210100704
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发表时间：
2001-06-01
影响因子：
2
通讯作者：
Bloomberg, J
中科院分区：
文献类型：
--
作者：
Bock, O;Schneider, S;Bloomberg, J
我们研究了如何在一个实验会议期间获得的感觉运动适应影响在随后的会议的适应。受试者的任务是使用操纵杆控制的光标跟踪视觉目标，而操纵杆和光标位置之间的关系被操纵以引入感觉运动不协调。每例受试者参加两次会议，间隔2分钟至1个月的暂停。我们发现，适应在几分钟内就完成了，并在记忆中持续了至少一个月，只有一个小的衰减（实验A）。当两个阶段的不一致性相互冲突时，我们发现了任务干扰的证据（实验B）。然而，当不一致性是独立的，我们发现的便利，而不是干扰（实验C），后者的发现不能解释使用的“更容易”的不一致性在第二届会议（实验D）。我们的结论是，干扰是由于任务要求之间的不兼容，而不是短期记忆的任务的竞争。我们进一步得出结论，适应感觉运动不协调的能力可以通过练习不相关的不协调来提高。
We investigated how sensorimotor adaptation acquired during one experimental session influenced the adaptation in a subsequent session. The subjects' task was to track a visual target using a joystick-controlled cursor, while the relationship between joystick and cursor position was manipulated to introduce a sensorimotor discordance. Each subject participated in two sessions, separated by a pause of 2 min to 1 month duration. We found that adaptation was achieved within minutes, and persisted in the memory for at least a month, with only a small decay (experiment A). When the discordances administered in the two sessions were in mutual conflict, we found evidence for task interference (experiment B). However, when the discordances were independent, we found facilitation rather than interference (experiment C); the latter finding could not be explained by the use of an "easier" discordance in the second session (experiment D). We conclude that interference is due to an incompatibility between task requirements, and not to a competition of tasks for short-term memory. We further conclude that the ability to adapt to a sensorimotor discordance can be improved by practicing with an unrelated discordance.