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The relationship of lyrics and tunes in the processing of unfamiliar songs: a functional magnetic resonance adaptation study.

Abstract : The cognitive relationship between lyrics and tunes in song is currently under debate, with some researchers arguing that lyrics and tunes are represented as separate components, while others suggest that they are processed in integration. The present study addressed this issue by means of a functional magnetic resonance adaptation paradigm during passive listening to unfamiliar songs. The repetition and variation of lyrics and/or tunes in blocks of six songs was crossed in a 2 x 2 factorial design to induce selective adaptation for each component. Reductions of the hemodynamic response were observed along the superior temporal sulcus and gyrus (STS/STG) bilaterally. Within these regions, the left mid-STS showed an interaction of the adaptation effects for lyrics and tunes, suggesting an integrated processing of the two components at prelexical, phonemic processing levels. The degree of integration decayed toward more anterior regions of the left STS, where the lack of such an interaction and the stronger adaptation for lyrics than for tunes was suggestive of an independent processing of lyrics, perhaps resulting from the processing of meaning. Finally, evidence for an integrated representation of lyrics and tunes was found in the left dorsal precentral gyrus (PrCG), possibly relating to the build-up of a vocal code for singing in which musical and linguistic features of song are fused. Overall, these results demonstrate that lyrics and tunes are processed at varying degrees of integration (and separation) through the consecutive processing levels allocated along the posterior-anterior axis of the left STS and the left PrCG.
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Submitted on : Thursday, February 28, 2013 - 8:01:10 PM
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Daniela Sammler, Amee Baird, Romain Valabrègue, Sylvain Clément, Sophie Dupont, et al.. The relationship of lyrics and tunes in the processing of unfamiliar songs: a functional magnetic resonance adaptation study.. Journal of Neuroscience, Society for Neuroscience, 2010, 30 (10), pp.3572-8. ⟨10.1523/JNEUROSCI.2751-09.2010⟩. ⟨hal-00795778⟩



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