Nygaard Lynne C
Indiana U, Speech Research Lab, Bloomington.
J Exp Psychol Hum Percept Perform. 1993 Apr;19(2):268-286. doi: 10.1037//0096-1523.19.2.268.
A modified version of duplex perception was used to investigate the nature of perceptual organization of speech. Ss were asked to identify stimuli in which a third-formant transition was presented to 1 ear and a full syllable (base) was presented to the other ear. Phonetic integration occurred even when the spectral composition or onset frequency of the isolated transition was varied relative to the base. However, when onset asynchronies were added to spectral differences, the isolated transition ceased to contribute to the syllable percept. Lexical status of the eventual phonetic percepts also influenced the phonetic integration of acoustic components into syllable percepts. These results suggest that combinations of low-level acoustic and phonetic differences between components and higher level lexical information interact to influence the grouping of acoustic components into phonetic percepts.
采用双感知的一种改进形式来研究言语感知组织的本质。要求被试识别这样的刺激：将一个第三共振峰过渡段呈现给一只耳朵，而将一个完整音节（基音）呈现给另一只耳朵。即使孤立过渡段的频谱构成或起始频率相对于基音有所变化，语音整合仍会发生。然而，当在频谱差异上增加起始异步时，孤立过渡段就不再对音节感知有贡献。最终语音感知的词汇状态也会影响声学成分到音节感知的语音整合。这些结果表明，成分之间低层次的声学和语音差异与高层次的词汇信息相互作用，从而影响声学成分组合成语音感知的分组。
