Training-mediated leftward asymmetries during music processing: A cross-sectional and longitudinal fMRI analysis

被引:30
|
作者
Ellis, Robert J. [1 ,2 ]
Bruijn, Bente [3 ]
Norton, Andrea C. [1 ,2 ]
Winner, Ellen [4 ]
Schlaug, Gottfried [1 ,2 ]
机构
[1] Beth Israel Deaconess Med Ctr, Dept Neurol, Boston, MA 02215 USA
[2] Harvard Univ, Sch Med, Boston, MA 02215 USA
[3] Univ Amsterdam, Med Fac AMC UvA, NL-1105 AZ Amsterdam, Netherlands
[4] Boston Coll, Dept Psychol, Chestnut Hill, MA 02467 USA
基金
美国国家卫生研究院; 美国国家科学基金会;
关键词
Auditory discrimination; Hemispheric lateralization; Musical training; Working memory; SENSORY-MOTOR INTEGRATION; SHORT-TERM-MEMORY; WORKING-MEMORY; PITCH MEMORY; HEMISPHERIC LATERALIZATION; FUNCTIONAL PLASTICITY; BRAIN ACTIVATION; PERCEPTION; RHYTHM; ATTENTION;
D O I
10.1016/j.neuroimage.2013.02.045
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Practicing a musical instrument has a profound impact on the structure and function of the human brain. The present fMRI study explored how relative hemispheric asymmetries in task-related activity during music processing (same/different discrimination) are shaped by musical training (quantified as cumulative hours of instrument practice), using both a large (N = 84) cross-sectional data set of children and adults, and a smaller (N = 20) two time-point longitudinal data set of children tracked over 3 to 5 years. The cross-sectional analysis revealed a significant leftward asymmetry in task-related activation, with peaks in Heschl's gyrus and supramarginal gyrus (SMG). The SMG peak was further characterized by a leftward asymmetry in the partial correlation strength with subjects' cumulative hours of practice, controlling for subjects' age and task performance. This SMG peak was found to exhibit a similar pattern of response in the longitudinal data set (in this case, with subjects' cumulative hours of practice over the course of the study), controlling for age, scan interval, and amount of instrument practice prior to the first scan. This study presents novel insights into the ways musical instrument training shapes task-related asymmetries in neural activity during music processing. (C) 2013 Elsevier Inc. All rights reserved.
引用
收藏
页码:97 / 107
页数:11
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