Infants' discrimination of the duration of a rapid spectrum change in nonspeech signals.
Infants' discrimination of the duration of a rapid spectrum change in nonspeech signals.
复制标题
婴儿对非言语信号中快速频谱变化持续时间的辨别。
DOI：
10.1126/science.6623067
复制
发表时间：
1983
期刊：
影响因子：
--
通讯作者：
Myers,M
中科院分区：
文献类型：
--
作者：
Jusczyk,PW;Pisoni,DB;Reed,MA;Fernald,A;Myers,M
两个月大的婴儿能够辨别复杂的正弦模式，这些模式的初始频率转换的持续时间各不相同。这些非语音正弦模式的区分是转换持续时间和刺激模式总持续时间的函数。即使指定刺激持续时间的信息发生在过渡信息之后，也观察到了这种上下文效应。这些发现与婴儿对合成语音刺激感知的观察结果相似。因此，不需要专门的语音处理能力来考虑婴儿对声学信号（无论是语音还是非语音）中的上下文影响的敏感性。
Two-month-old infants discriminated complex sinusoidal patterns that varied in the duration of their initial frequency transitions. Discrimination of these nonspeech sinusoidal patterns was a function of both the duration of the transitions and the total duration of the stimulus pattern. This contextual effect was observed even though the information specifying stimulus duration occurred after the transitional information. These findings parallel those observed with infants for perception of synthetic speech stimuli. Specialized speech processing capacities are thus not required to account for infants' sensitivity to contextual effects in acoustic signals, whether speech or nonspeech.