Temporal dynamics of musical emotions examined through intersubject synchrony of brain activity

Article Article scientifique Article Temporal dynamics of musical emotions examined through intersubject synchrony of brain activity eng 2015 author Trost Johanna Wiebke 666494 author Fruehholz Sascha 713891 author Cochrane Thomas 664654 author Cojan Yann 662574 author Vuilleumier Patrik 0000-0002-8198-9214 134853 10.1093/scan/nsv060 25994970 1749-5016 To study emotional reactions to music, it is important to consider the temporal dynamics of both affective responses and underlying brain activity. Here, we investigated emotions induced by music using functional magnetic resonance imaging (fMRI) with a data-driven approach based on intersubject correlations (ISC). This method allowed us to identify moments in the music that produced similar brain activity (i.e. synchrony) among listeners under relatively natural listening conditions. Continuous ratings of subjective pleasantness and arousal elicited by the music were also obtained for the music outside of the scanner. Our results reveal synchronous activations in left amygdala, left insula and right caudate nucleus that were associated with higher arousal, whereas positive valence ratings correlated with decreases in amygdala and caudate activity. Additional analyses showed that synchronous amygdala responses were driven by energy-related features in the music such as root mean square and dissonance, while synchrony in insula was additionally sensitive to acoustic event density. Intersubject synchrony also occurred in the left nucleus accumbens, a region critically implicated in reward processing. Our study demonstrates the feasibility and usefulness of an approach based on ISC to explore the temporal dynamics of music perception and emotion in naturalistic conditions. Dewey 128.37 15 Centre interfacultaire en sciences affectives 0D8 false 1241 Affective sciences Social cognitive and affective neuroscience 1-17 b3e941c5-de71-4190-b6f0-1a699a39e9d4 Article (Published version) Restricted TemporaldynamicsmusicalNeurosci-2015-Trost-scan_nsv060-1.pdf 1759737 application/pdf restrictedAccess Centres et instituts / Centre interfacultaire en sciences affectives

Title	Published in	Access level	OA Policy	Year	Views	Downloads

Temporal dynamics of musical emotions examined through intersubject synchrony of brain activity	Social cognitive and affective neuroscience			2015	584	3

Archive ouverte UNIGE

Cochrane, Thomas