Department of Otolaryngology - Head and Neck Surgery, McGill University, Montreal, Canada; Center for Research on Brain, Language, and Music, McGill University, Montreal, Canada; International Laboratory for Brain, Music, and Sound Research, Université de Montréal, Montreal, Canada.
Center for Research on Brain, Language, and Music, McGill University, Montreal, Canada; Department of Psychology, Université du Québec à Trois-Rivières, Trois-Rivières, Canada; International Laboratory for Brain, Music, and Sound Research, Université de Montréal, Montreal, Canada.
Brain Res. 2020 Aug 15;1741:146887. doi: 10.1016/j.brainres.2020.146887. Epub 2020 May 15.
From a baby's cry to a piece of music, we perceive emotions from our auditory environment every day. Many theories bring forward the concept of common neural substrates for the perception of vocal and musical emotions. It has been proposed that, for us to perceive emotions, music recruits emotional circuits that evolved for the processing of biologically relevant vocalizations (e.g., screams, laughs). Although some studies have found similarities between voice and instrumental music in terms of acoustic cues and neural correlates, little is known about their processing timecourse. To further understand how vocal and instrumental emotional sounds are perceived, we used EEG to compare the neural processing timecourse of both stimuli type expressed with a varying degree of complexity (vocal/musical affect bursts and emotion-embedded speech/music). Vocal stimuli in general, as well as musical/vocal bursts, were associated with a more concise sensory trace at initial stages of analysis (smaller N1), although vocal bursts had shorter latencies than the musical ones. As for the P2 - vocal affect bursts and Emotion-Embedded Musical stimuli were associated with earlier P2s. These results support the idea that emotional vocal stimuli are differentiated early from other sources and provide insight into the common neurobiological underpinnings of auditory emotions.
从婴儿的哭声到音乐，我们每天都从听觉环境中感知到情感。许多理论都提出了一个概念，即感知声音和音乐情感存在共同的神经基础。有人提出，为了感知情感，音乐调动了为处理生物相关发声（例如尖叫、笑声）而进化的情感回路。虽然一些研究已经发现声音和器乐在声学线索和神经相关性方面存在相似之处，但对于它们的处理时间过程知之甚少。为了进一步了解如何感知声乐和器乐的情感声音，我们使用 EEG 比较了两种刺激类型的神经处理时间过程，这两种刺激类型的表达具有不同程度的复杂性（声乐/音乐情感爆发和嵌入情感的言语/音乐）。一般来说，声乐刺激以及音乐/声乐爆发，在分析的初始阶段与更简洁的感觉痕迹相关（较小的 N1），尽管声乐爆发的潜伏期比音乐爆发短。至于 P2，声乐情感爆发和嵌入情感的音乐刺激与更早的 P2 相关。这些结果支持了这样一种观点，即情感性的声乐刺激在早期就与其他来源区分开来，并为听觉情感的共同神经生物学基础提供了深入了解。
