序列加工和语言的偏侧化

发布时间：2018-04-01 10:09

本文选题：序列加工　切入点：语言偏侧　出处：《华东师范大学》2017年硕士论文

【摘要】：语言中的序列加工是将一系列语音单元加工成单词或句子,序列加工在语言感知和言语产生中扮演着非常重要的角色,然而言语产生过程本身就十分复杂,其内在的序列加工神经机制还尚不清楚,在本文中我们观察了序列感知,序列执行,序列规划和估计(想象),感觉-想象整合序列加工机制的神经机制,并提出三个问题:(1)序列加工机制能否导致偏侧化;对于不同内容的加工,如音节序列,音高序列和手指按键任务序列加工机制的偏侧是怎样的。(2)不同的言语产生过程(序列感知,序列执行,序列规划和估计)是如何影响偏侧性的。(3)感觉-想象整合的序列加工机制过程的神经表征及偏侧是怎样的。本研究中,采用了 fMRI技术观察音节,音高,手指按键任务中序列加工的神经机制,并采取特殊的fMRI偏侧化分析方法进行左右脑对比。我们的结果显示:(1)音节序列感知过程是无偏侧的,而序列规划和估计过程是左偏侧的。(2)语音序列的感觉-想像过程的是无偏侧的,且音节序列位于左侧颞叶偏侧不显著,音高序列位于两侧的颞叶。(3)音高任务的动作执行阶段,序列加工机制位于额中回,颞顶联合区;在手指按键任务中序列加工机制位于额上回,而音节的序列加工机制在序列规划和估计时位于顶叶。序列加工机制因加工阶段不同,内容不同而有不同的偏侧和神经表征。
[Abstract]:Sequence processing in language is to process a series of speech units into words or sentences. Sequence processing plays a very important role in language perception and speech production. However, the process of speech production is very complex.Three questions are raised: can the processing mechanism of the sequence lead to lateralization; for different content processing, such as syllable sequence,Different speech production processes (sequence awareness, sequence execution, sequence awareness, sequence execution) are different in pitch sequence and finger keystroke task sequence processing mechanism.Sequence planning and estimation) how to affect the laterality of the neural representation of the process of sensory-visual integration of sequence processing and what is the laterality of the process.The sequence processing mechanism is located in the middle frontal gyrus, the temporoparietal joint region, and the sequence processing mechanism in the superior frontal gyrus in the finger keystroke task.The sequence processing mechanism of syllable is in the parietal lobe in sequence planning and estimation.The mechanism of sequence processing has different side and nerve characteristics because of different processing stage and content.
【学位授予单位】：华东师范大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：B842

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