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The basis of musical consonance as revealed by congenital amusia

Cousineau, Marion ; McDermott, Josh H. ; Peretz, Isabelle

Proceedings of the National Academy of Sciences - PNAS, 2012-11, Vol.109 (48), p.19858-19863 [Periódico revisado por pares]

United States: National Academy of Sciences

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  • Título:
    The basis of musical consonance as revealed by congenital amusia
  • Autor: Cousineau, Marion ; McDermott, Josh H. ; Peretz, Isabelle
  • Assuntos: Acoustics ; Amusia ; Auditory Perception ; Biological Sciences ; Congenital diseases ; Genetic disorders ; Humans ; Inharmonic tones ; Music ; Music psychology ; Musical aesthetics ; Musical chords ; Musical consonance ; Musical dissonance ; Musical perception ; Sensory perception ; Sound ; Sound pitch ; Tonal harmony
  • É parte de: Proceedings of the National Academy of Sciences - PNAS, 2012-11, Vol.109 (48), p.19858-19863
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    Author contributions: M.C., J.H.M., and I.P. designed research; M.C. performed research; M.C. analyzed data; and M.C., J.H.M., and I.P. wrote the paper.
    Edited by Dale Purves, Duke–National University of Singapore Graduate Medical School, Republic of Singapore, and approved October 9, 2012 (received for review May 11, 2012)
  • Descrição: Some combinations of musical notes sound pleasing and are termed "consonant" but others sound unpleasant and are termed "dissonant." The distinction between consonance and dissonance plays a central role in Western music, and its origins have posed one of the oldest and most debated problems in perception. In modern times, dissonance has been widely believed to be the product of "beating": interference between frequency components in the cochlea that has been believed to be more pronounced in dissonant than consonant sounds. However, harmonic frequency relations, a higher-order sound attribute closely related to pitch perception, has also been proposed to account for consonance. To tease apart theories of musical consonance, we tested sound preferences in individuals with congenital amusia, a neurogenetic disorder characterized by abnormal pitch perception. We assessed amusics' preferences for musical chords as well as for the isolated acoustic properties of beating and harmonicity. In contrast to control subjects, amusic listeners showed no preference for consonance, rating the pleasantness of consonant chords no higher than that of dissonant chords. Amusics also failed to exhibit the normally observed preference for harmonic over inharmonic tones, nor could they discriminate such tones from each other. Despite these abnormalities, amusics exhibited normal preferences and discrimination for stimuli with and without beating. This dissociation indicates that contrary to classic theories, beating is unlikely to underlie consonance. Our results instead suggest the need to integrate harmonicrty as a foundation of music preferences, and illustrate how amusia may be used to investigate normal auditory function.
  • Editor: United States: National Academy of Sciences
  • Idioma: Inglês
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