Osu Rieko, Hirai Satomi, Yoshioka Toshinori, Kawato Mitsuo
ATR Computational Neuroscience Laboratories, 2-2-2, Hikaridai, Seika-cho, Soraku-gun, Kyoto 619-0288, Japan.
Nat Neurosci. 2004 Feb;7(2):111-2. doi: 10.1038/nn1184. Epub 2004 Jan 25.
Studies have shown that humans cannot simultaneously learn opposing force fields or opposing visuomotor rotations, even when provided with arbitrary contextual information, probably because of interference in their working memory. In contrast, we found that subjects can adapt to two opposing force fields when provided with contextual cues and can consolidate motor memories if random and frequent switching occurs. Because significant aftereffects were seen, this study suggests that multiple internal models can be acquired simultaneously during learning and predictively switched, depending only on contextual information.
研究表明，即使提供任意的情境信息，人类也无法同时学习相反的力场或相反的视觉运动旋转，这可能是因为工作记忆受到干扰。相比之下，我们发现，当提供情境线索时，受试者可以适应两个相反的力场，并且如果随机且频繁地进行切换，他们能够巩固运动记忆。由于观察到了显著的后效应，这项研究表明，在学习过程中可以同时获取多个内部模型，并仅根据情境信息进行预测性切换。
