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Oscillatory brain responses to own names uttered by unfamiliar and familiar voices

机译：陌生和熟悉的声音表达出对名字的振荡性大脑反应

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Among auditory stimuli, the own name is one of the most powerful and it is able to automatically capture attention and elicit a robust electrophysiological response. The subject’s own name (SON) is preferentially processed in the right hemisphere, mainly because of its self-relevance and emotional content, together with other personally relevant information such as the voice of a familiar person. Whether emotional and self-relevant information are able to attract attention and can be, in future, introduced in clinical studies remains unclear. In the present study we used EEG and asked participants to count a target name (active condition) or to just listen to the SON or other unfamiliar names uttered by a familiar or unfamiliar voice (passive condition). Data reveals that the target name elicits a strong alpha event related desynchronization with respect to non-target names and triggers in addition a left lateralized theta synchronization as well as delta synchronization.In the passive condition alpha desynchronization was observed for familiar voice and SON stimuli in the right hemisphere.Altogether we speculate that participants engage additional attentional resources when counting a target name or when listening to personally relevant stimuli which is indexed by alpha desynchronization whereas left lateralized theta synchronization may be related to verbal working memory load. After validating the present protocol in healthy volunteers it is suggested to move one step further and apply the protocol to patients with disorders of consciousness in which the degree of residual cognitive processing and self-awareness is still insufficiently understood.
机译：在听觉刺激中，自己的名字是最强大的名字之一，它能够自动引起注意并引起强烈的电生理反应。主体的名字（SON）优先在右半球进行处理，这主要是因为其具有自我相关性和情感内容，以及其他与个人相关的信息，例如熟悉的人的声音。情绪和与自我相关的信息是否能够引起人们的注意，并且将来是否可以引入临床研究仍不清楚。在本研究中，我们使用EEG并要求参与者对目标名称（活动状态）进行计数，或者只是听SON或其他由熟悉或不熟悉的声音（被动状态）发出的陌生名称。数据显示，目标名称引发了与非目标名称相关的强烈Alpha事件失步，并触发了左侧的theta同步和增量同步。在被动条件下，观察到熟悉的语音和SON刺激的alpha非同步。总的来说，我们推测参与者在计算目标名称或聆听个人相关的刺激时会投入更多的注意力资源，这些刺激由alpha失步索引，而左侧的theta同步可能与言语工作记忆负荷有关。在健康志愿者中验证本方案后，建议再向前迈一步，并将该方案应用于意识障碍患者，在该患者中，对残余认知加工和自我意识的程度仍知之甚少。

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