Li Xiaojian, Gandour Jackson T, Talavage Thomas, Wong Donald, Hoffa Angela, Lowe Mark, Dzemidzic Mario
Research Center for Psychological Application, South China Normal University, Guangzhou, PR China.
Neuroreport. 2010 Jul 14;21(10):690-4. doi: 10.1097/WNR.0b013e32833b0a10.
The aim of this functional magnetic resonance imaging study is to identify neuroanatomical substrates underlying phonological processing of segmental (consonant, rhyme) and suprasegmental (tone) units. An auditory verbal recognition paradigm was used in which native speakers of Mandarin Chinese were required to match a phonological unit that occurs in a list of three syllables to the corresponding unit of a following probe. The results show that hemispheric asymmetries arise depending on the type of phonological unit. In direct contrasts between phonological units, tones, relative to consonants and rhymes, yield increased activation in frontoparietal areas of the right hemisphere. This finding indicates that the cortical circuitry subserving lexical tones differs from that of consonants or rhymes.
这项功能磁共振成像研究的目的是确定语音节段(辅音、韵律)和超音段(声调)单位的语音处理背后的神经解剖学基础。使用了一种听觉言语识别范式,要求以汉语为母语的人将出现在三个音节列表中的一个语音单位与随后探针的相应单位进行匹配。结果表明,半球不对称性取决于语音单位的类型。在语音单位之间的直接对比中,相对于辅音和韵律,声调在右半球的额顶叶区域产生增强的激活。这一发现表明,服务于词汇声调的皮层回路与辅音或韵律的不同。