Tramo M J, Bharucha J J
Program in Cognitive Neuroscience, Dartmouth Medical School, Hanover, NH 03756.
Neuropsychologia. 1991;29(4):313-25. doi: 10.1016/0028-3932(91)90045-a.
The hemispheric representation of auditory functions mediating the perception of harmony in music was investigated in two split-brain patients using a musical chord priming task. Previous experiments in normal subjects had demonstrated that the harmonic context established by a prime chord influences the accuracy of target chord intonation judgements. Only the right hemisphere of each callosotomy patient manifested the normal interaction between harmonic relatedness and intonation. The results raise the possibility that associative auditory functions which generate expectancies for harmonic progression in music are lateralized within the right hemisphere.
利用音乐和弦启动任务，对两名裂脑患者介导音乐和谐感知的听觉功能的半球表征进行了研究。之前在正常受试者身上进行的实验表明，启动和弦所建立的和声背景会影响目标和弦音高判断的准确性。在每个胼胝体切开术患者中，只有右半球表现出和声相关性和音高之间的正常相互作用。这些结果增加了一种可能性，即产生音乐和声进行预期的联想听觉功能在右半球中是单侧化的。
