Does the brain know who is at the origin of what in an imitative interaction?
Does the brain know who is at the origin of what in an imitative interaction?
复制标题
DOI：
10.3389/fnhum.2012.00128
复制
发表时间：
2012
影响因子：
2.9
通讯作者：
Nadel J
中科院分区：
文献类型：
--
作者：
Dumas G;Martinerie J;Soussignan R;Nadel J
与代理感相关的大脑最近受到了越来越多的关注。然而，这些探索在很大程度上仍然局限于对大脑的孤立研究。到目前为止，使用的原型范式包括操纵对自己行为的视觉感知，同时要求受试者区分自我引起的行为和外部引起的行为。然而，最近将代理定义为自下而上和自上而下过程相结合的多因素现象表明，需要探索更复杂的情况。值得注意的是，有必要在两个主体的情况下考虑代理的动态，在这种情况下，我们经常经历双重问题，即在正在进行的互动中，谁是什么的起源。事实上，在角色转换的二元背景下，每个伴侣都可以感觉到身体的所有权，分享一种代理感，并完全交替地将行动的首要归因于自己和他人。为了探索代理的这些不同方面的大脑相关性，我们用双重脑电和视频设置记录了22名受试者通过自发和诱导模仿手部动作(II)进行互动。这两种条件的不同之处在于角色要么是外在的属性(诱发条件)，要么是主体之间协商的结果(自发条件)。结果表明，在II条件下，自我和他者--归因于动作主导性在β、α和β频段的分离。相反，在自发模仿(SI)中，两种作用在中央-顶叶区域的低伽马频段(38-47赫兹)也有类似的增加。综上所述，这些结果突出了在现场互动中发挥作用的代理的不同大脑关联。
Brain correlates of the sense of agency have recently received increased attention. However, the explorations remain largely restricted to the study of brains in isolation. The prototypical paradigm used so far consists of manipulating visual perception of own action while asking the subject to draw a distinction between self- versus externally caused action. However, the recent definition of agency as a multifactorial phenomenon combining bottom-up and top-down processes suggests the exploration of more complex situations. Notably there is a need of accounting for the dynamics of agency in a two-body context where we often experience the double faceted question of who is at the origin of what in an ongoing interaction. In a dyadic context of role switching indeed, each partner can feel body ownership, share a sense of agency and altogether alternate an ascription of the primacy of action to self and to other. To explore the brain correlates of these different aspects of agency, we recorded with dual EEG and video set-ups 22 subjects interacting via spontaneous versus induced imitation (II) of hand movements. The differences between the two conditions lie in the fact that the roles are either externally attributed (induced condition) or result from a negotiation between subjects (spontaneous condition). Results demonstrate dissociations between self- and other-ascription of action primacy in delta, alpha and beta frequency bands during the condition of II. By contrast a similar increase in the low gamma frequency band (38–47 Hz) was observed over the centro-parietal regions for the two roles in spontaneous imitation (SI). Taken together, the results highlight the different brain correlates of agency at play during live interactions.
登录
查看更多内容
影响因子：
3.7
作者：
Dumas G;Nadel J;Soussignan R;Martinerie J;Garnero L
通讯作者：
Garnero L
DOI：
10.1073/pnas.0308538101
发表时间：
2004-06-29
影响因子：
11.1
作者：
Brovelli, A;Ding, MZ;Bressler, SL
通讯作者：
Bressler, SL
影响因子：
1.6
作者：
De Jaegher, Hanne;Froese, Tom
通讯作者：
Froese, Tom
触摸橡胶手：身体所有权的感觉与多感官大脑区域的活动有关。
DOI：
10.1523/jneurosci.0800-05.2005
发表时间：
2005-11-09
期刊：
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子：
--
作者：
Ehrsson HH;Holmes NP;Passingham RE
通讯作者：
Passingham RE
影响因子：
5.7
作者：
Farrer, C;Franck, N;Jeannerod, A
通讯作者：
Jeannerod, A