首页> 美国卫生研究院文献>Frontiers in Systems Neuroscience >Natural Translating Locomotion Modulates Cortical Activity at Action Observation
【2h】

Natural Translating Locomotion Modulates Cortical Activity at Action Observation

机译:自然平移运动在观察动作时调节皮层活动。

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。

摘要

The present study verified if the translational component of locomotion modulated cortical activity recorded at action observation. Previous studies focusing on visual processing of biological motion mainly presented point light walker that were fixed on a spot, thus removing the net translation toward a goal that yet remains a critical feature of locomotor behavior. We hypothesized that if biological motion recognition relies on the transformation of seeing in doing and its expected sensory consequences, a significant effect of translation compared to centered displays on sensorimotor cortical activity is expected. To this aim, we explored whether EEG activity in the theta (4–8 Hz), alpha (8–12 Hz), beta 1 (14–20 Hz) and beta 2 (20–32 Hz) frequency bands exhibited selectivity as participants viewed four types of stimuli: a centered walker, a centered scrambled, a translating walker and a translating scrambled. We found higher theta synchronizations for observed stimulus with familiar shape. Higher power decreases in the beta 1 and beta 2 bands, indicating a stronger motor resonance was elicited by translating compared to centered stimuli. Finally, beta bands modulation in Superior Parietal areas showed that the translational component of locomotion induced greater motor resonance than human shape. Using a Multinomial Logistic Regression classifier we found that Dorsal-Parietal and Inferior-Frontal regions of interest (ROIs), constituting the core of action-observation system, were the only areas capable to discriminate all the four conditions, as reflected by beta activities. Our findings suggest that the embodiment elicited by an observed scenario is strongly mediated by horizontal body displacement.
机译:本研究证实了动作观察的运动成分的翻译成分是否调节了皮质活动。先前专注于生物运动的视觉处理的研究主要提出了固定在一个点上的点光助行器,从而消除了向目标移动的净平移,而目标仍然是运动行为的关键特征。我们假设,如果生物运动识别依赖于观看过程的转变及其预期的感官后果,那么与中心显示相比,平移对感觉运动皮层活动的影响将会很大。为此,我们探讨了theta(4–8 Hz),alpha(8–12 Hz),beta 1(14–20 Hz)和beta 2(20–32 Hz)频带中的脑电活动是否表现出选择性作为参与者查看了四种刺激类型:集中步行者,集中扰乱者,平移步行者和平移扰动者。我们发现观察到的形状相似的刺激具有更高的theta同步性。 β1和β2谱带的功率降低,表明与集中刺激相比,翻译引起的运动共振更强。最后,上顶叶区域的β谱带调制显示,运动的翻译成分比人的形状引起更大的运动共振。使用多项式Lo​​gistic回归分类器,我们发现构成行动观察系统核心的感兴趣的背腹顶区和下额叶前区(ROI)是能够区分所有这四个条件的唯一区域,这由beta活动反映出来。我们的发现表明,由观察到的情况引起的实施方案是由水平身体位移强烈介导的。

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