Auditory organization of sound sequences by a temporal or numerical regularity--a mismatch negativity study comparing musicians and non-musicians.
Brain Res Cogn Brain Res
; 23(2-3): 270-6, 2005 May.
Article
en En
| MEDLINE
| ID: mdl-15820634
ABSTRACT
The human auditory system can encode regularities in the acoustic environment without the requirement of attention. We investigated whether the auditory system of musicians is more sensitive than that of non-musicians in encoding complex regularities. We presented tone sequences containing either a temporal or a numerical regularity. The sequence with the temporal regularity could be divided into segments of a constant duration while the segments contained a varying number of tones. The sequence with the numerical regularity, on the other hand, could be divided into segments containing a constant number of tones while the segments varied in duration. Auditory encoding of the regularity was determined by measuring whether an occasional segment lengthening, either in time or by number elicited the mismatch negativity (MMN). In both musicians and non-musicians, an MMN was elicited when the temporal regularity was violated. In contrast, only in musicians an MMN was elicited to violations of the numerical regularity. The results show that temporal processing is of general importance in audition since at an involuntary auditory processing stage a complex temporal regularity can be encoded irrespective of musical expertise. Furthermore, the auditory system of professional musicians can encode a numerical regularity without attention being required reflecting the functional importance of beat tracking in the perceptual organization of music.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Percepción Auditiva
/
Percepción del Tiempo
/
Potenciales Evocados Auditivos
/
Música
Límite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Brain Res Cogn Brain Res
Asunto de la revista:
CEREBRO
/
PSICOLOGIA
Año:
2005
Tipo del documento:
Article
País de afiliación:
Finlandia