Ceponiene R, Service E, Kurjenluoma S, Cheour M, Näätänen R
Department of Psychology, University of Helsinki, Finland.
Dev Psychol. 1999 May;35(3):709-20. doi: 10.1037//0012-1649.35.3.709.
This study explored the relation between phonological short-term memory and auditory-sensory processing in 7-9-year-old children. Twenty-four participants performed a pseudoword repetition test. The mismatch-negativity (MMN) component of auditory event-related brain potentials was obtained from 9 participants with the highest and 9 participants with the lowest scores on the test. The MMN indexes short-term auditory-sensory memory, including auditory-sensory representations for speech. It was recorded to just perceptible /baga/-/baka/ bisyllabic and easily discriminable 1000/1100-Hz tone contrasts with interstimulus intervals of 350 and 2,000 ms. The high and low repeaters differed significantly in MMN amplitude to speech stimuli at the shorter interstimulus interval. Thus, the accuracy of auditory-sensory processing seems to affect phonological short-term representations in school-age children and therefore may play a role in vocabulary development.
本研究探讨了7至9岁儿童语音短期记忆与听觉感觉加工之间的关系。24名参与者进行了假词重复测试。从测试得分最高的9名参与者和得分最低的9名参与者中获取听觉事件相关脑电位的失配负波（MMN）成分。MMN指标反映短期听觉感觉记忆，包括语音的听觉感觉表征。它被记录在仅可感知的/baga/-/baka/双音节以及容易区分的1000/1100赫兹音调对比中，刺激间隔分别为350毫秒和2000毫秒。在较短的刺激间隔下，高重复者和低重复者在对语音刺激的MMN幅度上存在显著差异。因此，听觉感觉加工的准确性似乎会影响学龄儿童的语音短期表征，进而可能在词汇发展中发挥作用。
