The present study investigated whether auditory stimuli with different contents affect right laterality and the components of stimulus-preceding negativity (SPN). A time-estimation task was performed under voice, rhythm, beep, and control conditions. The SPN interval during which participants anticipated the stimulus was divided into quarters to define early and late SPNs. Early and late components of SPN were also extracted using a principal component analysis. The anticipation of voice sounds enhanced the early SPN and the early component, which reflected the anticipation of language processing. Beep sounds elicited the right hemisphere preponderance of the early component, the early SPN, and the late SPN. The rhythmic sound tended to attenuate the amplitude compared with the two other stimuli. These findings further substantiate the existence of separate early and late components of the SPN. In addition, they suggest that the early component reflects selective anticipatory attention toward differing types of auditory feedback.

本研究调查了不同内容的听觉刺激是否会影响右侧偏侧性和刺激前消极（SPN）的成分。在语音，节奏，提示音和控制条件下执行了时间估计任务。参与者预期刺激的SPN间隔分为四个季度，以定义早期和晚期SPN。还使用主成分分析提取了SPN的早期和晚期成分。语音的预期增强了早期SPN和早期组件，这反映了语言处理的预期。哔哔声引起了早期分量，早期SPN和晚期SPN的右半球优势。与其他两个刺激相比，有节奏的声音倾向于减弱振幅。这些发现进一步证实了SPN的早期和晚期单独组成部分的存在。此外，他们认为早期成分反映了对不同类型的听觉反馈的选择性预期关注。