• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国卫生研究院文献>Royal Society Open Science >The left ventral premotor cortex is involved in hand shaping for intransitive gestures: evidence from a two-person imitation experiment
【2h】

The left ventral premotor cortex is involved in hand shaping for intransitive gestures: evidence from a two-person imitation experiment

机译：左腹前运动皮层参与不规则手势的手形：两人模仿实验的证据

代理获取
本网站仅为用户提供外文OA文献查询和代理获取服务，本网站没有原文。下单后我们将采用程序或人工为您竭诚获取高质量的原文，但由于OA文献来源多样且变更频繁，仍可能出现获取不到、文献不完整或与标题不符等情况，如果获取不到我们将提供退款服务。请知悉。
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The ventral premotor cortex (PMv) is involved in grasping and object manipulation, while the dorsal premotor cortex (PMd) has been suggested to play a role in reaching and action selection. These areas have also been associated with action imitation, but their relative roles in different types of action imitation are unclear. We examined the role of the left PMv and PMd in meaningful and meaningless action imitation by using repetitive transcranial magnetic stimulation (rTMS). Participants imitated meaningful and meaningless actions performed by a confederate actor while both individuals were motion-tracked. rTMS was applied over the left PMv, left PMd or a vertex control site during action observation or imitation. Digit velocity was significantly greater following stimulation over the PMv during imitation compared with stimulation over the PMv during observation, regardless of action meaning. Similar effects were not observed over the PMd or vertex. In addition, stimulation over the PMv increased finger movement speed in a (non-imitative) finger–thumb opposition task. We suggest that claims regarding the role of the PMv in object-directed hand shaping may stem from the prevalence of object-directed designs in motor control research. Our results indicate that the PMv may have a broader role in ‘target-directed’ hand shaping, whereby different areas of the hand are considered targets to act upon during intransitive gesturing.
机译：腹侧前运动皮层（PMv）参与抓握和物体操纵，而背侧前运动皮层（PMd）已被建议在伸手和动作选择中发挥作用。这些领域也与动作模仿有关，但是它们在不同类型的动作模仿中的相对作用尚不清楚。我们通过重复经颅磁刺激（rTMS）检查了左PMv和PMd在有意义且无意义的动作模仿中的作用。参与者模仿了同盟演员在跟踪动作时所做的有意义且毫无意义的动作。在动作观察或模仿过程中，将rTMS应用于左侧PMv，左侧PMd或顶点控制位置。与观察期间的PMv刺激相比，模仿期间的PMv刺激后的数字速度显着更大，而与动作含义无关。在PMd或顶点上未观察到类似的效果。此外，对PMv的刺激提高了（非模仿性）手指拇指对立任务中手指的运动速度。我们建议有关PMv在面向对象的手部塑造中的作用的主张可能源于电机控制研究中面向对象的设计的普遍性。我们的结果表明，PMv在“目标导向”的手部整形中可能发挥更广泛的作用，在这种情况下，手部的不同区域被视为在非传递性手势过程中要作用的目标。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
代理获取

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号