Distinct neural responses to chord violations: A multiple source analysis study.
The human brain is constantly predicting the auditory environment by representing sequential similarities and extracting temporal regularities. It has been proposed that simple auditory regularities are extracted at lower stations of the auditory cortex and more complex ones at other brain regions,...
| Autores principales: | , , , , |
|---|---|
| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
Elsevier
2011
|
| Acceso en línea: | http://eprints.uanl.mx/2436/1/Garza-Villarreal_2011_ERAN_inpress.pdf |
| _version_ | 1824368259626958848 |
|---|---|
| author | Garza Villarreal, Eduardo A. Brattico, Elvira Leino, Sakari Ostergaard, Leif Vuust, Peter |
| author_facet | Garza Villarreal, Eduardo A. Brattico, Elvira Leino, Sakari Ostergaard, Leif Vuust, Peter |
| author_sort | Garza Villarreal, Eduardo A. |
| collection | Repositorio Institucional |
| description | The human brain is constantly predicting the auditory environment by representing sequential similarities and extracting temporal regularities. It has been proposed that simple auditory regularities are extracted at lower stations of the auditory cortex and more complex ones at other brain regions, such as the prefrontal cortex. Deviations from auditory regularities elicit a family of early negative electric potentials distributed over the frontal regions of the scalp. In this study, we wished to disentangle the brain processes associated with sequential vs. hierarchical auditory regularities in a musical context by studying the event-related potentials (ERPs), the behavioral responses to violations of these regularities, and the localization of the underlying ERP generators using two different source analysis algorithms. To this aim, participants listened to musical cadences constituted by seven chords, each containing either harmonically congruous chords, harmonically incongruous chords, or harmonically congruous but mistuned chords. EEG was recorded and multiple source analysis was performed. Incongruous chords violating the rules of harmony elicited a bilateral ERAN, whereas mistuned chords within chord sequences elicited a right-lateralized MMN. We found that the dominant cortical sources for the ERAN were localized around Broca's area and its right homolog, whereas the MMN generators were localized around the primary auditory cortex. These findings suggest a predominant role of the auditory cortices in detecting sequential scale regularities and the posterior prefrontal cortex in parsing hierarchical regularities in music. |
| format | Article |
| id | eprints-2436 |
| institution | UANL |
| language | English |
| publishDate | 2011 |
| publisher | Elsevier |
| record_format | eprints |
| spelling | eprints-24362014-11-24T20:28:07Z http://eprints.uanl.mx/2436/ Distinct neural responses to chord violations: A multiple source analysis study. Garza Villarreal, Eduardo A. Brattico, Elvira Leino, Sakari Ostergaard, Leif Vuust, Peter The human brain is constantly predicting the auditory environment by representing sequential similarities and extracting temporal regularities. It has been proposed that simple auditory regularities are extracted at lower stations of the auditory cortex and more complex ones at other brain regions, such as the prefrontal cortex. Deviations from auditory regularities elicit a family of early negative electric potentials distributed over the frontal regions of the scalp. In this study, we wished to disentangle the brain processes associated with sequential vs. hierarchical auditory regularities in a musical context by studying the event-related potentials (ERPs), the behavioral responses to violations of these regularities, and the localization of the underlying ERP generators using two different source analysis algorithms. To this aim, participants listened to musical cadences constituted by seven chords, each containing either harmonically congruous chords, harmonically incongruous chords, or harmonically congruous but mistuned chords. EEG was recorded and multiple source analysis was performed. Incongruous chords violating the rules of harmony elicited a bilateral ERAN, whereas mistuned chords within chord sequences elicited a right-lateralized MMN. We found that the dominant cortical sources for the ERAN were localized around Broca's area and its right homolog, whereas the MMN generators were localized around the primary auditory cortex. These findings suggest a predominant role of the auditory cortices in detecting sequential scale regularities and the posterior prefrontal cortex in parsing hierarchical regularities in music. Elsevier 2011-05 Article PeerReviewed application/pdf en http://eprints.uanl.mx/2436/1/Garza-Villarreal_2011_ERAN_inpress.pdf http://eprints.uanl.mx/2436/1.haspreviewThumbnailVersion/Garza-Villarreal_2011_ERAN_inpress.pdf Garza Villarreal, Eduardo A. y Brattico, Elvira y Leino, Sakari y Ostergaard, Leif y Vuust, Peter (2011) Distinct neural responses to chord violations: A multiple source analysis study. Brain research, 1389. pp. 103-114. ISSN 0006-8993 http://www.journals.elsevier.com/brain-research/ 10.1016/j.brainres.2011.02.089 |
| spellingShingle | Garza Villarreal, Eduardo A. Brattico, Elvira Leino, Sakari Ostergaard, Leif Vuust, Peter Distinct neural responses to chord violations: A multiple source analysis study. |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Distinct neural responses to chord violations: A multiple source analysis study. |
| title_full | Distinct neural responses to chord violations: A multiple source analysis study. |
| title_fullStr | Distinct neural responses to chord violations: A multiple source analysis study. |
| title_full_unstemmed | Distinct neural responses to chord violations: A multiple source analysis study. |
| title_short | Distinct neural responses to chord violations: A multiple source analysis study. |
| title_sort | distinct neural responses to chord violations a multiple source analysis study |
| url | http://eprints.uanl.mx/2436/1/Garza-Villarreal_2011_ERAN_inpress.pdf |
| work_keys_str_mv | AT garzavillarrealeduardoa distinctneuralresponsestochordviolationsamultiplesourceanalysisstudy AT bratticoelvira distinctneuralresponsestochordviolationsamultiplesourceanalysisstudy AT leinosakari distinctneuralresponsestochordviolationsamultiplesourceanalysisstudy AT ostergaardleif distinctneuralresponsestochordviolationsamultiplesourceanalysisstudy AT vuustpeter distinctneuralresponsestochordviolationsamultiplesourceanalysisstudy |