Our affective experiences are influenced by combined multisensory information. Although the enhanced effects of congruent audiovisual information on our affective experiences have been well documented, the role of neural oscillations in the audiovisual integration of affective signals remains unclear. First, it is unclear whether oscillatory activity changes as a function of valence. Second, the function of phase-locked and non-phase-locked power changes in audiovisual integration of affect has not yet been clearly distinguished. To fill this gap, the present study performed time-frequency analyses on EEG data acquired while participants perceived positive, neutral and negative naturalistic video and music clips. A comparison between the congruent audiovisual condition and the sum of unimodal conditions was used to identify supra-additive (Audiovisual > Visual + Auditory) or sub-additive (Audiovisual < Visual + Auditory) integration effects. The results showed that early evoked sub-additive theta and sustained induced supra-additive delta and beta activities are linked to audiovisual integration of affect regardless of affective content.

中文翻译：

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与视听整合效果相关的诱发和诱发功率振荡

我们的情感体验受到综合多感官信息的影响。尽管一致的视听信息对我们的情感体验的增强影响已得到充分证明，但神经振荡在情感信号视听整合中的作用仍不清楚。首先，尚不清楚振荡活动是否随价态变化。其次，锁相和非锁相功率变化对视听集成的影响尚未明确区分。为了填补这一空白，本研究对参与者感知正面、中性和负面自然主义视频和音乐剪辑时获得的 EEG 数据进行了时频分析。全等视听条件与单峰条件总和之间的比较用于识别超加法（视听 > 视觉 + 听觉）或亚加法（视听 < 视觉 + 听觉）整合效果。结果表明，无论情感内容如何，​​早期诱发的次加性 theta 和持续诱导的超加性 delta 和 beta 活动都与情感的视听整合有关。