Department of Psychology, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3, Canada.
Department of Cognitive Science, University of California, Irvine, Irvine, California 92697-5100, USA.
J Acoust Soc Am. 2020 Jun;147(6):3758. doi: 10.1121/10.0001349.
The difference between major and minor scales plays a central role in Western music. However, recent research using random tone sequences ("tone-scrambles") has revealed a dramatically bimodal distribution in sensitivity to this difference: 30% of listeners are near perfect in classifying major versus minor tone-scrambles; the other 70% perform near chance. Here, whether or not infants show this same pattern is investigated. The anticipatory eye-movements of thirty 6-month-old infants were monitored during trials in which the infants heard a tone-scramble whose quality (major versus minor) signalled the location (right versus left) where a subsequent visual stimulus (the target) would appear. For 33% of infants, these anticipatory eye-movements predicted target location with near perfect accuracy; for the other 67%, the anticipatory eye-movements were unrelated to the target location. In conclusion, six-month-old infants show the same distribution as adults in sensitivity to the difference between major versus minor tone-scrambles.
大调和小调之间的差异在西方音乐中起着核心作用。然而,最近使用随机音调序列(“音调乱序”)的研究揭示了对这种差异的敏感性存在显著的双峰分布:30%的听众在对大调与小调音调乱序的分类中近乎完美;另外 70%的听众表现则近乎随机。在这里,研究了婴儿是否表现出相同的模式。在婴儿听到一个音调乱序的试验中,监测了三十名 6 个月大婴儿的预期眼动,该音调乱序的质量(大调与小调)表示随后视觉刺激(目标)出现的位置(右侧与左侧)。对于 33%的婴儿,这些预期的眼动以近乎完美的准确度预测了目标位置;对于另外 67%的婴儿,预期的眼动与目标位置无关。总之,6 个月大的婴儿在对大调与小调音调乱序之间的差异的敏感性上表现出与成人相同的分布。