Pakarinen Satu, Lovio Riikka, Huotilainen Minna, Alku Paavo, Näätänen Risto, Kujala Teija
Cognitive Brain Research Unit, University of Helsinki, Helsinki, Finland; Helsinki Brain Research Centre, Helsinki, Finland.
Biol Psychol. 2009 Dec;82(3):219-26. doi: 10.1016/j.biopsycho.2009.07.008. Epub 2009 Jul 29.
In this study, we addressed whether a new fast multi-feature mismatch negativity (MMN) paradigm can be used for determining the central auditory discrimination accuracy for several acoustic and phonetic changes in speech sounds. We recorded the MMNs in the multi-feature paradigm to changes in syllable intensity, frequency, and vowel length, as well as for consonant and vowel change, and compared these MMNs to those obtained with the traditional oddball paradigm. In addition, we examined the reliability of the multi-feature paradigm by repeating the recordings with the same subjects 1-7 days after the first recordings. The MMNs recorded with the multi-feature paradigm were similar to those obtained with the oddball paradigm. Furthermore, only minor differences were observed in the MMN amplitudes across the two recording sessions. Thus, this new multi-feature paradigm with speech stimuli provides similar results as the oddball paradigm, and the MMNs recorded with the new paradigm were reproducible.
在本研究中，我们探讨了一种新的快速多特征失匹配负波（MMN）范式是否可用于确定语音中几种声学和语音变化的中枢听觉辨别准确性。我们在多特征范式中记录了对音节强度、频率、元音长度变化以及辅音和元音变化的MMN，并将这些MMN与传统oddball范式获得的MMN进行比较。此外，我们通过在首次记录后1 - 7天对同一受试者重复记录来检验多特征范式的可靠性。多特征范式记录的MMN与oddball范式获得的MMN相似。此外，在两次记录过程中观察到MMN振幅仅有微小差异。因此，这种带有语音刺激的新多特征范式提供了与oddball范式相似的结果，并且用新范式记录的MMN是可重复的。
