首页> 外文OA文献 >A multimodal investigation of matching mechanisms in automatic imitation
【2h】

A multimodal investigation of matching mechanisms in automatic imitation

机译:自动仿制中匹配机制的多模式研究

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

In recent years, research on imitation focused on investigating the underlying neural mechanisms; to this aim simple paradigms were developed to experimentally investigate the phenomenon. Following the natural tendency of humans to mimic gestures and postures of their conspecifics, paradigms of automatic imitation are nowadays widely used in the field. The main aim of my dissertation is to investigate how imitation occurs using an automatic imitation paradigm, in particular focusing on the matching processes that are required to map model and performers actions.The dissertation contains six chapters. In chapter 1, I will provide a brief background of the current theoretical accounts of imitation and of the concepts of automatic imitation and compatibility effects. I will particularly focus on the questions concerning automatic imitation that are still to be fully addressed, particularly those related to the distinction of imitative and spatial compatibility. I will also address the neuroimaging and neuropsychological literature on the neural correlates of imitation. In chapter 2, I will present a neuroimaging study I carried out to investigate the imitation components. Throughout all the studies of this thesis, we used a simple automatic imitation paradigm that is suitable to differentiate between the spatial compatibility and the imitative compatibility, due to the anatomical correspondence between model and performer. Results of the first study showed that the parietal opercula are active anytime the anatomical correspondence between model and performer is present. Hence, in chapter 3 I will present a study in which double-pulse TMS was used to investigate the role of the parietal opercula in automatic imitation, and in particular in coding the imitative compatibility. Results showed that when the activity in the parietal opercula is interfered by TMS, the imitative compatibility effect disappears. In the second part of my thesis I have investigated the factors that can interact with and modulate imitative behaviors. Chapter 4 contains an fMRI study in which the role of the model in imitation is investigated. Using a simplified version of the automatic imitation paradigm, I found that the fronto-parietal network, usually associated to imitation, is more active when participants perform actions that are compatible with those performed by a human model than by a non biological model. Moreover, in this study I have also investigated how different emotional contexts can influence the automatic tendency to imitate. The results showed that the activation of the fronto-parietal network is suppressed by emotional context, such as an angry face, that does not promote affiliative tendencies. In chapter 5 I will describe a neuropsychological study on brain damaged patients. Associations and dissociations between automatic imitation and action imitation were investigated, to analyze the differences between the two types of imitation. Moreover, the role of putative body representations in imitation and whether these body representations are needed for imitation has been investigated.udLastly, in chapter 6 I will wrap up the main results of my dissertation and I will argue that I was able to provide evidence that in automatic imitation an anatomical matching operates between the model and the performer, and that this is sustained by the parietal opercula. In addition I clarified the importance of the model, showing that the activity of fronto-parietal regions supporting imitative behaviors is modulated by model identity.
机译:近年来,关于模仿的研究集中在研究潜在的神经机制。为了这个目的,开发了简单的范例来对这种现象进行实验研究。遵循人类模仿其特定对象的手势和姿势的自然趋势,如今,自动模仿的范例已在该领域中广泛使用。本文的主要目的是研究使用自动模仿范式进行模仿的方式,特别是针对模型和表演者动作的映射过程。本文共分六章。在第一章中,我将简要介绍当前的模仿理论以及自动模仿和兼容效果的概念。我将特别关注与自动模仿有关的问题,这些问题还有待充分解决,尤其是与区分模仿性和空间兼容性有关的问题。我还将介绍有关模仿的神经相关性的神经影像学和神经心理学文献。在第二章中,我将介绍我进行的神经影像研究,以研究模仿成分。在本文的所有研究中,由于模型和执行者之间的解剖学上的对应关系,我们使用了一种简单的自动模仿范例,该范例适合区分空间兼容性和模仿兼容性。第一项研究的结果表明,只要模型与表演者之间存在解剖学上的对应关系,顶叶覆盖层就会活跃。因此,在第3章中,我将进行一项研究,其中使用双脉冲TMS来研究壁在自动模仿中的作用,尤其是在编码模仿兼容性方面。结果表明,当顶盖小肠的活动受到TMS的干扰时,模仿相容性作用消失了。在论文的第二部分,我研究了可以与模仿行为相互作用和调节模仿行为的因素。第4章包含fMRI研究,其中研究了模型在模仿中的作用。使用自动模仿范例的简化版本,我发现通常与模仿相关的额顶网络在参与者执行与人类模型所执行的动作兼容的动作时比非生物学模型上的动作更为活跃。此外,在这项研究中,我还研究了不同的情感环境如何影响模仿的自动趋势。结果表明,额顶网络的激活受到情绪语境(例如生气的脸)的抑制,而情绪语境不会促进亲和倾向。在第5章中,我将描述针对脑损伤患者的神经心理学研究。研究了自动模仿和动作模仿之间的联系和分离,以分析两种模仿之间的差异。此外,已经研究了假定的身体表征在模仿中的作用以及这些身体表征是否需要用于模仿。 ud最后,在第6章中,我将总结论文的主要结果,并指出,我能够提供证据在自动模仿中,模型和表演者之间进行解剖匹配,并且由顶盖覆盖。另外,我阐明了模型的重要性,表明支持模仿行为的额顶区域的活动受到模型身份的调节。

著录项

  • 作者

    Mengotti Paola;

  • 作者单位
  • 年度 2012
  • 总页数
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类

相似文献

  • 外文文献
  • 中文文献
  • 专利

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