Musical consonance perception in musicians vs nonmusicians: an event-related potential and behavioral study
| Autor: | Yu-Hsiang Tsao, 曹育祥 |
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| Rok vydání: | 2008 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 96 Consonance of interval is a most significant general idea of western tonal music. Some studies indicated that cortical processing of musical consonance conforms to consonance of interval for amateur musicians. However, consonant and dissonant simple-tone intervals are related to critical bandwidth (roughness) for non-musicians. Therefore, the research wants to find out the cortical processing of musical consonance and what are the differences with consonance of interval and roughness for musicians/non-musicians. The aim of the experiment is obtaining comparison of training-related human that handle listening to consonant (perfect fifth) and dissonant (tritone) intervals (with roughness and without roughness) by behavior response and ERPs. In the behavior experiment, amateur musicians accurately categorized the consonant and dissonant intervals, but not for non-musicians. Non-musicians considered that stimuli without roughness are consonant intervals and stimuli with roughness are dissonant intervals. In the ERPs analysis, N1 sources in localized in the region of the primary auditory cortex. The amplitude of the N1 evoked by consonant or dissonant intervals did not differ between amateur musicians and non-musicians. P2 sources localized in the region of the secondary auditory cortex. P2 evoked by consonant or dissonant intervals and stimuli with or without roughness are enhanced in amateur musicians compared with non-musicians. Amateur musicians had a stronger positive P2 when consonant intervals were presented than when dissonant intervals were presented. Non-musicians had a stronger positive P2 when stimuli with roughness were presented than when stimuli with roughness were presented. N2 source localized in the region of anterior cingulate cortex (ACC). Amateur musicians had a stronger negativity N2 when dissonant intervals were presented than when consonant intervals were presented. Non-musicians had a stronger negativity N2 when stimuli with roughness were presented than when stimuli without roughness were presented. The results point to the influence of expertise, since different ERPs were obtained cortical processing of listening to consonant and dissonant intervals. Amateur musicians had enhanced in secondary auditory cortex compared with non-musicians and categorized the consonant and dissonant intervals by ACC. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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