La dispersión local de las alturas afecta la inducción tonal

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Fecha
05/2013
Editorial
Associação Brasileira de Cognição e Artes Musicais
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Percepta
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2318-891X
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Resumen
Estudios previos sugerían que la inducción tonal se basa en información acerca de las clases de alturas presentes en una secuencia. Sin embargo, en Anta (2013b) se observó que, aun cuando tal información se conserve constante, la dispersión en el registro de las notas de la secuencia (i.e., la distancia en semitonos que hay entre ellas) afecta la inducción; específicamente, se observó que a mayor distancia entre notas, menor eficiencia en la inducción, y viceversa. El objetivo del presente estudio fue evaluar si los resultados observados en Anta (2013b) se debieron a la variabilidad en la dispersión local de las notas, o en la dispersión global (i.e., a la distancia entre cada nota y la siguiente o entre todas las notas en general, respectivamente). Los análisis aquí realizados sugieren que lo que afectó la inducción tonal fue el incremento de la dispersión local de las notas.
Previous studies suggested that tonality induction is based on the pitch-class related information a sequence shows. However, Anta (2013b) found that, even if that information is kept constant, pitch dispersion (i.e., the distance in pitch/semitones between tones) affects tonality induction; specifically, it was found that the larger the distance between pitches, the weaker the induction, and vice versa. The aim of the present study was to assess whether the results found in Anta (2013b) were due to variability in the local dispersion of pitches, or in their global dispersion (i.e., due to the distance between successive pitches or between all pitches in general, respectively). The analyses conducted here suggest that tonality induction is affected by the local dispersion of pitches.
Previous studies suggested that tonality induction is based on the pitch-class related information a sequence shows. However, Anta (2013b) found that, even if that information is kept constant, pitch dispersion (i.e., the distance in pitch/semitones between tones) affects tonality induction; specifically, it was found that the larger the distance between pitches, the weaker the induction, and vice versa. The aim of the present study was to assess whether the results found in Anta (2013b) were due to variability in the local dispersion of pitches, or in their global dispersion (i.e., due to the distance between successive pitches or between all pitches in general, respectively). The analyses conducted here suggest that tonality induction is affected by the local dispersion of pitches.
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