Multiple motor memories are learned to control different points on a tool.
Multiple motor memories are learned to control different points on a tool.
复制标题
DOI:
10.1038/s41562-018-0324-5
复制
发表时间:
2018-04
影响因子:
29.9
通讯作者:
Wolpert DM
中科院分区:
文献类型:
--
作者:
Heald JB;Ingram JN;Flanagan JR;Wolpert DM
Skilful object manipulation requires learning the dynamics of objects, linking applied force to motion,. This involves the formation of a motor memory,, which has been assumed to be associated with the object, independent of the point on the object that one chooses to control. Importantly, in manipulation tasks, different control points on an object, such as the rim of a cup when drinking or its base when setting it down, can be associated with distinct dynamics. Here, we show that opposing dynamic perturbations, which interfere when controlling a single location on an object, can be learned when each is associated with a separate control point. This demonstrates that motor memory formation is linked to control points on the object, rather than the object per se. We also show that the motor system only generates separate memories for different control points if they are linked to different dynamics, allowing efficient use of motor memory. To account for these results, we develop a normative switching state-space model of motor learning, in which the association between cues (control points) and contexts (dynamics) is learned rather than fixed. Our findings uncover an important mechanism through which the motor system generates flexible and dexterous behaviour.
登录
查看更多内容
影响因子:
2.5
作者:
Berniker M;Franklin DW;Flanagan JR;Wolpert DM;Kording K
通讯作者:
Kording K
影响因子:
25
作者:
Flanagan, JR;Beltzner, MA
通讯作者:
Beltzner, MA
影响因子:
2.5
作者:
Danion, Frederic;Diamond, Jonathan S.;Flanagan, J. Randall
通讯作者:
Flanagan, J. Randall
影响因子:
5.4
作者:
Doucet, A;Gordon, NJ;Krishnamurthy, V
通讯作者:
Krishnamurthy, V
影响因子:
2.5
作者:
Fu, Qiushi;Santello, Marco
通讯作者:
Santello, Marco