Abstract：
:Motor learning results from repeated exposure to the same movement and allows a mover to increase movement optimality. Typically, this has only been considered in single-step movements. In sequential movements, an initial reach movement is tailored to the demands of the onward movement. However, the exact role of motor practice in the tailoring to onward task demands is unknown. Eighteen adults performed blocks of 15 movements; each movement consisted of a reach phase and an onward phase (the object was placed in a tight-fitting hole, placed in a loose-fitting hole or thrown). Simple practice effects were seen; for the reach phase, the amount of time spent decelerating decreased over trials, and for the onward phase, the accuracy of the place/throw movements increased over trials. Furthermore, approximately 30 % of variance in the practice effect of the onward phase could be explained by the practice effect in the reach phase. Therefore, we suggest that the changes in the reach phase are directly linked to the changes in the efficiency of action and that this is necessary but not sufficient for explaining the calibration of the onward action.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Wilmut K,Barnett ALdoi
10.1007/s00221-013-3728-5subject
Has Abstractpub_date
2014-01-01 00:00:00pages
159-68issue
1eissn
0014-4819issn
1432-1106journal_volume
232pub_type
杂志文章abstract：:Transcranial direct current stimulation (tDCS) using intensities ≤ 2 mA on physical and cognitive outcomes has been extensively investigated. Studies comparing the effects of different intensities of tDCS have yielded mixed results and little is known about how higher intensities (> 2 mA) affect outcomes. This study e...
journal_title：Experimental brain research
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journal_title：Experimental brain research
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journal_title：Experimental brain research
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journal_title：Experimental brain research
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journal_title：Experimental brain research
pub_type： 杂志文章
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更新日期：2007-07-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章,随机对照试验
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更新日期：2014-11-01 00:00:00
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更新日期：2020-10-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/pl00005731
更新日期：1997-08-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228557
更新日期：1996-07-01 00:00:00
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journal_title：Experimental brain research
pub_type： 杂志文章
doi：10.1007/BF00228869
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pub_type： 更正并重新发布的文章,杂志文章
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更新日期：2013-06-01 00:00:00
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journal_title：Experimental brain research
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