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Vocal melody and musical background are simultaneously processed by the brain for musical predictions

Abstract : Musical pleasure is related to the capacity to predict and anticipate the music. By recording early cerebral responses of 16 participants with electroencephalography during periods of silence inserted in known and unknown songs, we aimed to measure the contribution of different musical attributes to musical predictions. We investigated the mismatch between past encoded musical features and the current sensory inputs when listening to lyrics associated with vocal melody, only background instrumental material, or both attributes grouped together. When participants were listening to chords and lyrics for known songs, the brain responses related to musical violation produced event-related potential responses around 150-200 ms that were of a larger amplitude than for chords or lyrics only. Microstate analysis also revealed that for chords and lyrics, the global field power had an increased stability and a longer duration. The source localization identified that the right superior temporal and frontal gyri and the inferior and medial frontal gyri were activated for a longer time for chords and lyrics, likely caused by the increased complexity of the stimuli. We conclude that grouped together, a broader integration and retrieval of several musical attributes at the same time recruit larger neuronal networks that lead to more accurate predictions.
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Submitted on : Monday, March 7, 2022 - 3:06:32 PM
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Thibault Chabin, Lionel Pazart, Damien Gabriel. Vocal melody and musical background are simultaneously processed by the brain for musical predictions. Annals of the New York Academy of Sciences, Wiley, 2022, ⟨10.1111/nyas.14755⟩. ⟨hal-03600383⟩



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