The mechanism underlying visual-induced auditory interaction is still under discussion. Here, we provide evidence that the mirror mechanism underlies visual-auditory interactions. In this study, visual stimuli were divided into two major groups-mirror stimuli that were able to activate mirror neurons and non-mirror stimuli that were not able to activate mirror neurons. The two groups were further divided into six subgroups as follows: visual speech-related mirror stimuli, visual speech-irrelevant mirror stimuli, and non-mirror stimuli with four different luminance levels. Participants were 25 children with cochlear implants (CIs) who underwent an event-related potential (ERP) and speech recognition task. The main results were as follows: (1) there were significant differences in P1, N1, and P2 ERPs between mirror stimuli and non-mirror stimuli; (2) these ERP differences between mirror and non-mirror stimuli were partly driven by Brodmann areas 41 and 42 in the superior temporal gyrus; (3) ERP component differences between visual speech-related mirror and non-mirror stimuli were partly driven by Brodmann area 39 (visual speech area), which was not observed when comparing the visual speech-irrelevant stimulus and non-mirror groups; and (4) ERPs evoked by visual speech-related mirror stimuli had more components correlated with speech recognition than ERPs evoked by non-mirror stimuli, while ERPs evoked by speech-irrelevant mirror stimuli were not significantly different to those induced by the non-mirror stimuli. These results indicate the following: (1) mirror and non-mirror stimuli differ in their associated neural activation; (2) the visual-auditory interaction possibly led to ERP differences, as Brodmann areas 41 and 42 constitute the primary auditory cortex; (3) mirror neurons could be responsible for the ERP differences, considering that Brodmann area 39 is associated with processing information about speech-related mirror stimuli; and (4) ERPs evoked by visual speech-related mirror stimuli could better reflect speech recognition ability. These results support the hypothesis that a mirror mechanism underlies visual-auditory interactions.

中文翻译：

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视觉-听觉交互背后的镜像机制：来自人工耳蜗植入儿童事件相关电位的证据。

视觉诱发听觉交互的机制仍在讨论中。在这里，我们提供证据表明镜像机制是视觉-听觉交互的基础。在这项研究中，视觉刺激分为两大类——能够激活镜像神经元的镜像刺激和不能激活镜像神经元的非镜像刺激。两组进一步分为六个亚组，如下所示：视觉语言相关镜像刺激、视觉语言无关镜像刺激和具有四种不同亮度级别的非镜像刺激。参与者是 25 名接受了事件相关电位 (ERP) 和语音识别任务的人工耳蜗 (CI) 儿童。主要结果如下：（1）镜面刺激与非镜面刺激P1、N1、P2 ERPs存在显着差异；（2）镜面刺激和非镜面刺激之间的这些 ERP 差异部分是由颞上回的布罗德曼区 41 和 42 驱动的；(3)视觉言语相关镜像与非镜像刺激的ERP成分差异部分由Brodmann area 39（视觉言语区）驱动，在视觉言语无关刺激与非镜像组比较时未观察到；(4) 视觉语音相关镜像刺激诱发的 ERPs 与语音识别相关的成分比非镜像刺激诱发的 ERPs 多，而与语音无关的镜像刺激诱发的 ERPs 与非镜像刺激诱发的 ERPs 没有显着差异刺激。这些结果表明：（1）镜像和非镜像刺激在其相关的神经激活方面不同；(2) 视觉-听觉交互可能导致 ERP 差异，因为 Brodmann 区域 41 和 42 构成初级听觉皮层；(3) 镜像神经元可能是 ERP 差异的原因，考虑到 Brodmann 区域 39 与处理与语音相关的镜像刺激有关；(4)视觉语音相关镜像刺激诱发的ERPs能更好地反映语音识别能力。这些结果支持镜像机制是视觉-听觉交互的基础的假设。(4)视觉语音相关镜像刺激诱发的ERPs能更好地反映语音识别能力。这些结果支持镜像机制是视觉-听觉交互的基础的假设。(4)视觉语音相关镜像刺激诱发的ERPs能更好地反映语音识别能力。这些结果支持镜像机制是视觉-听觉交互的基础的假设。