Music-evoked pleasantness has been extensively reported to be modulated by familiarity. Nevertheless, while the brain temporal dynamics underlying the process of giving value to music are beginning to be understood, little is known about how familiarity might modulate the oscillatory activity associated with music-evoked pleasantness. The goal of the present experiment was to study the influence of familiarity in the relation between theta phase synchronization and music-evoked pleasantness. EEG was recorded from 22 healthy participants while they were listening to both familiar and unfamiliar music and rating the experienced degree of evoked pleasantness. By exploring interactions, we found that right fronto-temporal theta synchronization was positively associated with music-evoked pleasantness when listening to unfamiliar music. On the contrary, inter-hemispheric temporo-parietal theta synchronization was positively associated with music-evoked pleasantness when listening to familiar music. These results shed some light on the possible oscillatory mechanisms underlying fronto-temporal and temporo-parietal connectivity and their relationship with music-evoked pleasantness and familiarity.

据广泛报道，音乐引起的愉悦感是由熟悉度调节的。尽管如此，虽然人们开始了解音乐赋予价值过程背后的大脑时间动态，但人们对熟悉度如何调节与音乐引起的愉悦感相关的振荡活动知之甚少。本实验的目的是研究熟悉度对 theta 相位同步与音乐引起的愉悦感之间的关系的影响。记录了 22 名健康参与者在听熟悉和不熟悉的音乐时的脑电图，并评估了所体验的诱发愉悦程度。通过探索交互，我们发现在听不熟悉的音乐时，右额颞 theta 同步与音乐引起的愉悦感呈正相关。相反，听熟悉的音乐时，半球间颞顶叶θ同步与音乐引起的愉悦感呈正相关。这些结果揭示了额颞叶和颞顶叶连通性背后可能的振荡机制及其与音乐引起的愉悦感和熟悉感的关系。