| Title | Eliminating Direction Specificity in Visuomotor Learning |
| Authors | Yin, Cong Bi, Yuqing Yu, Cong Wei, Kunlin |
| Affiliation | Peking Univ, Dept Psychol, Beijing 100081, Peoples R China. Peking Univ, Beijing Key Lab Behav & Mental Hlth, Beijing 100081, Peoples R China. Peking Univ, Peking Tsinghua Ctr Life Sci, Beijing 100081, Peoples R China. Peking Univ, IDG McGovern Inst Brain Res, Beijing 100081, Peoples R China. Peking Univ, Dept Psychol, Beijing 100871, Peoples R China. |
| Keywords | learning specificity motor adaptation motor generalization motor learning INTERNAL-MODELS MOTOR CONTROL SENSORIMOTOR ADAPTATION WORKING-MEMORY TRANSFORMATIONS INTERFERENCE ROTATIONS SAVINGS RECALL ERROR |
| Issue Date | 2016 |
| Publisher | JOURNAL OF NEUROSCIENCE |
| Citation | JOURNAL OF NEUROSCIENCE.2016,36,(13),3839-3847. |
| Abstract | The generalization of learning offers a unique window for investigating the nature of motor learning. Error-based motor learning reportedly cannot generalize to distant directions because the aftereffects are direction specific. This direction specificity is often regarded as evidence that motor adaptation is model-based learning, and is constrained by neuronal tuning characteristics in the primary motor cortices and the cerebellum. However, recent evidence indicates that motor adaptation also involves model-free learning and explicit strategy learning. Using rotation paradigms, here we demonstrate that savings (faster relearning), which is closely related to model-free learning and explicit strategy learning, is also direction specific. However, this new direction specificity can be abolished when the participants receive exposure to the generalization directions via an irrelevant visuomotor gain-learning task. Control evidence indicates that this exposure effect is weakened when direction error signals are absent during gain learning. Therefore, the direction specificity in visuomotor learning is not solely related to model-based learning; it may also result from the impeded expression of model-free learning and explicit strategy learning with untrained directions. Our findings provide new insights into the mechanisms underlying motor learning, and may have important implications for practical applications such as motor rehabilitation. |
| URI | http://hdl.handle.net/20.500.11897/434306 |
| ISSN | 0270-6474 |
| DOI | 10.1523/JNEUROSCI.2712-15.2016 |
| Indexed | SCI(E) PubMed SSCI |
| Appears in Collections: | 心理与认知科学学院 生命科学学院 行为与心理健康北京市重点实验室 |
