Selective responses in right inferior frontal and supramarginal gyri differentiate between observed movements of oneself vs. another.
Selective responses in right inferior frontal and supramarginal gyri differentiate between observed movements of oneself vs. another.
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DOI：
10.1016/j.neuropsychologia.2011.01.005
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发表时间：
2011-04
期刊：
影响因子：
2.6
通讯作者：
Frey SH
中科院分区：
文献类型：
--
作者：
Macuga KL;Frey SH
额下回（IFg）和缘上回（SMg）对自我产生的和观察到的动作都有反应，这一事实被解释为感知-动作联系机制（镜像）的证据。然而，大脑很容易区分由自己的运动与其他人的运动产生的感知。IFg和/或SMg对这些视觉刺激的反应差异，即使仔细匹配？我们使用BOLD功能磁共振成像来解决这个问题，因为参与者在观看现场视觉反馈或感知相似的演员预先录制的视频时进行重复的双手手部运动。正如预期的那样，在两种情况下，双侧IFg和SMg的活性增加。然而，右SMg和IFg在现场视觉反馈与匹配记录期间的反应不同。这些镜像系统区域可以通过检测预测和实际感觉反馈和/或视觉和体感信号之间的微妙时空差异来区分自发感知。
The fact that inferior frontal (IFg) and supramarginal (SMg) gyri respond to both self-generated and observed actions has been interpreted as evidence for a perception-action linking mechanism (mirroring). Yet, the brain readily distinguishes between percepts generated by one’s own movements vs. those of another. Do IFg and/or SMg respond differentially to these visual stimuli even when carefully matched? We used BOLD fMRI to address this question as participants made repetitive bimanual hand movements while viewing either live visual feedback or perceptually similar, pre-recorded video of an actor. As expected, bilateral IFg and SMg increased activity during both conditions. However, right SMg and IFg responded differentially during live visual feedback vs. matched recordings. These mirror system areas may distinguish self-generated percepts by detecting subtle spatio-temporal differences between predicted and actual sensory feedback and/or visual and somatosensory signals.
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DOI：
10.1523/jneurosci.2668-09.2009
发表时间：
2009-08-12
期刊：
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子：
--
作者：
Kilner JM;Neal A;Weiskopf N;Friston KJ;Frith CD
通讯作者：
Frith CD
影响因子：
4.2
作者：
Kaplan, Jonas T.;Aziz-Zadeh, Lisa;Iacoboni, Marco
通讯作者：
Iacoboni, Marco
影响因子：
2
作者：
Blakemore, SJ;Sirigu, A
通讯作者：
Sirigu, A
影响因子：
2.5
作者：
Dinstein, Ilan;Hasson, Uri;Heeger, David J.
通讯作者：
Heeger, David J.
影响因子：
2.4
作者：
Georgieff, N;Jeannerod, M
通讯作者：
Jeannerod, M