【作者】 夏全胜；

【导师】 石锋；

【作者基本信息】 南开大学 ， 语言学及应用语言学， 2012， 博士

【摘要】 在世界语言中，几乎所有语言都具有名词和动词这两个词类。名词和动词作为语言中重要而基本的词类，在句法、语义、语用等语言层面上既有区别又有联系。由于缺少严格意义上的形态，汉语名词和动词的划分问题还存在不同的意见。心理语言学、神经语言学等方面的研究可能有助于解决这个问题。因为语言与大脑的关系是密不可分的。大脑的左右两个半球，在功能上有所不同，存在偏侧化现象。研究汉语名词和动词在左脑和右脑中的加工和表征，对认识语言和大脑都具有重要意义。本文通过ERP技术和半视野速示技术，对汉语名词、动词、动名兼类词的语义加工进行了考察，并且通过进一步匹配动词和动名兼类词的具体性，对语义特征和具体性在语义加工中的作用进行了探讨。通过比较左脑/右视野和右脑/左视野条件下，不同词类加工的表现，对语言加工中的偏侧化现象进行了讨论。在对实验结果充分分析的基础上，本文主要得到以下结果：1）汉语名词、动词作为两个基本词类，在语义加工过程中存在差别。在不区分视野呈现条件下，名词和动词的P2和N400存在差异；在半视野呈现条件下，名词和动词的N400在左脑/右视野和右脑/左视野中都存在差别。名词和动词在语义加工中表现出的差异，一方面是因为名词和动词具有不同的语义特征，另一方面是因为名词和动词在具体性上存在差别。名词、动词的分离不应在形态层面和句法层面上，名词和动词的差别也不是源于具体性的不同。2）汉语动名兼类词处于典型名词和典型动词的中间状态，在逐渐具备了名动两种句法功能的同时，其语义也发生了变化，体现出不同于名词和动词的语义特征。N400和LPC两个成分可以体现这种语义差异，并表现出动名兼类词从动词逐渐向名词发展的语义动态轨迹。同时，动名兼类词与名词和动词的差异还表明，在进入句法位置前，动名兼类词就为能够同时实现名词和动词的句法功能做好了语义上的准备，体现语言的语义层面和句法层面的对应一致性。3）具体性变量在语言加工中具有重要作用。在语义加工中，具体性会影响N400成分的波幅。但是具体性对于不同词类加工的影响不同，具体名词和抽象名词之间的N400差异要大于具体动词和抽象动词之间的N400差异，说明具体性对名词加工和表征的影响更为显著。这种差异与名词、动词的语义特征有关，具体性更适合对名词进行分析。4）在语言加工中，左脑和右脑之间是分工协作的。在语义加工过程中，左脑主要负责语言的加工，右脑主要负责形象的加工；左脑多是对主要的、单一语义进行加工，右脑多是对广泛的、多个语义进行加工。5）N400至少具有两个子成分，一个与语义特征的加工有关，一个与具体性的加工有关。LPC在词汇判断任务中体现判断的确定性，单义词和多义词加工的差异可以通过LPC体现出来。更多还原

【Abstract】 Nouns and verbs exist in almost all human languages. As fundamental andimportant members of word classes, nouns and verbs differ but correlate at severallevels of language, including grammatical, semantic, pragmatic levels and so on.However, because of simple system of inflections, Chinese word classes could not bedistinguished by means of morphology. It has not reached an agreement on thecriteria of ascertaining word classes of Chinese. The researches from psycholinguistic,neurolinguistic and other perspectives may shed light on solving this problem becausethere is strong relationship between brain and language. Brain consists of two distinctcerebral hemispheres, left hemisphere and right hemisphere. The functions of eachhemisphere are specialized and lateralized. It is significant to explore therepresentation and processing of Chinese noun and verb in the left and righthemispheres for unfolding the secrets of bran, language and their relationship.The study was intended to investigate the semantic processing of unambiguousnoun, unambiguous verb and verb-noun ambiguous word in Chinese by means ofevent-related potentials (ERP) and tachistoscopic visual half-field technique. In orderto clarify the roles of semantic feature and concreteness in the word processing, theresults of the processing of verb and verb-noun ambiguous were further analyzed bycomparing the situations in which the variable of concreteness was matched and notmatched. The hemispheric lateralization of language was also discussed on the basisof the representation of noun, verb and verb-noun ambiguous showed in left visualfield/right hemisphere and right visual field/left hemisphere.The main results of the study are as follows:1. Chinese noun and verb, as fundamental members of word classes, representeddifferently in the semantic processing. There were significant differences betweennoun and verb on the amplitudes of P2and N400in the normal visual field.Furthermore, in the half visual field, the amplitudes of N400elicited by noun weresignificantly different from those elicited by verb. These results indicated the distinctsemantic features and concreteness of noun and verb, which did not support the hypotheses that noun and verb dissociation were at the level of grammaticalmorphology or at the level of syntax. And the results also did not support the pointthat noun-verb dissociation attributed to the semantic difference on the concreteness.2. Chinese verb-noun ambiguous word, as the intervals of the continuum of nounand verb, formed specific semantic features different from the two extreme points.Although achieving the syntactic functions of noun and verb, Chinese verb-nounambiguous did not achieve the semantic features of these two word classescorrespondingly. In contrast, the semantic features of verb-noun ambiguous weredistinct from those of noun and verb. The results of N400and LPC showed suchdifferences and indicated the category shift from verb to noun in semantic. In addition,the results also indicated that before entering syntactic position, verb-noun ambiguoushad already made semantic preparations for realizing both syntactic functions of nounand verb, which provided the supporting evidence for the conformance of syntaxlevel and semantic level.3. The variable of concreteness, which functioned as an important role in thelanguage processing, had greater effect on the representation and processing of nounthan on that of verb. The differences between the amplitudes of N400elicited byconcrete and abstract noun were more significant than those elicited by concrete andabstract verb. This was because noun that designated men and things was moresuitable to be analyzed on the dimension of concreteness than verb that referred toaction and behaviors.4. The functions of left and right hemisphere were separate and complementary.In the word processing, the left hemisphere is generally functionally specialized forsemantic and right hemisphere is generally lateralized for image. Furthermore, the lefthemisphere focused semantic activation on features related to the one and dominantmeaning and the right hemisphere maintained diffuse semantic activation on featuresrelated to several and less important meanings.5. N400contained at least two sub-components, one related to semantic featuresand the other related to concreteness. LPC component was the reflection ofconfidence in the lexical decision process. Polysemy activated higher LPC than singlemeaning word did.更多还原