Characteristics of the amusic (n = 13) and control (n = 13) groups.

F = female; M = male; L = left; R = right; scores on the six MBEA subtests are in number of correct responses out of 30; the pitch composite score is the sum of the scale, contour, and interval scores; t is the statistic of the Welch two sample t-test (two-tailed, df = 24).

标记F代表女性（female），M代表男性（male），L代表左侧（left），R代表右侧（right）；六项MBEA分测验（MBEA subtests）的得分以满分30分的正确作答数计；音调综合得分为音阶得分、轮廓得分与间隔得分之和；其中t为韦尔奇两样本t检验（Welch two sample t-test）的检验统计量，该检验为双侧检验，自由度df=24。