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Dissonance encoding in human inferior colliculus covaries with individual differences in dislike of dissonant music

MPS-Authors
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Kim,  Seung-Goo
Methods and Development Unit - MEG and Cortical Networks, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Lepsien,  Jöran
Methods and Development Unit Nuclear Magnetic Resonance, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Fritz,  Thomas Hans
Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Mildner,  Toralf
Methods and Development Unit Nuclear Magnetic Resonance, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Mueller,  Karsten
Methods and Development Unit Nuclear Magnetic Resonance, MPI for Human Cognitive and Brain Sciences, Max Planck Society;

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Kim_Lepsien_2017.pdf
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Citation

Kim, S.-G., Lepsien, J., Fritz, T. H., Mildner, T., & Mueller, K. (2017). Dissonance encoding in human inferior colliculus covaries with individual differences in dislike of dissonant music. Scientific Reports, 7: 5726. doi:10.1038/s41598-017-06105-2.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-800C-2
Abstract
Harmony is one of the most fundamental elements of music that evokes emotional response. The inferior colliculus (IC) has been known to detect poor agreement of harmonics of sound, that is, dissonance. Electrophysiological evidence has implicated a relationship between a sustained auditory response mainly from the brainstem and unpleasant emotion induced by dissonant harmony. Interestingly, an individual’s dislike of dissonant harmony of an individual correlated with a reduced sustained auditory response. In the current paper, we report novel evidence based on functional magnetic resonance imaging (fMRI) for such a relationship between individual variability in dislike of dissonance and the IC activation. Furthermore, for the first time, we show how dissonant harmony modulates functional connectivity of the IC and its association with behaviourally reported unpleasantness. The current findings support important contributions of low level auditory processing and corticofugal interaction in musical harmony preference.