The dissociability of lexical retrieval and morphosyntactic processes for nouns and verbs: A functional and anatomoclinical study
The dissociability of lexical retrieval and morphosyntactic processes for nouns and verbs: A functional and anatomoclinical study
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DOI：
10.1016/j.bandl.2016.05.005
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发表时间：
2016-08-01
影响因子：
2.5
通讯作者：
Miceli, Gabriele
中科院分区：
文献类型：
--
作者：
Benetello, Annalisa;Finocchiaro, Chiara;Miceli, Gabriele
名词和动词在脑损伤后可以在词汇检索和形态句法处理水平上分离。为了记录行为分离的范围和神经基础，研究人员要求12名在命名物体或动作方面有不成比例困难的失语症患者对名词和动词进行语音上相同的形态句法转换。2名客体命名能力差的被试和2/10名动作命名能力差的被试没有出现形态语法错误。动作命名能力差的10名受试者中有6名在动词的形态句法上表现出不成比例的困难或没有困难。名词和动词的形态错误在群体水平上是相关的，但在个别情况下，观察到动词形态的选择性损伤。形态语法不完整的物体和动作命名不良与非重叠病变（分别为枕下颞叶和额颞叶）有关。动词形态语法不佳的额颞病变影响到脑岛深处的白质束，可能破坏了额颞网络中节点的相互作用。(C) 2016 Elsevier Inc.版权所有。
Nouns and verbs can dissociate following brain damage, at both lexical retrieval and morphosyntactic processing levels. In order to document the range and the neural underpinnings of behavioral dissociations, twelve aphasics with disproportionate difficulty naming objects or actions were asked to apply phonologically identical morphosyntactic transformations to nouns and verbs.Two subjects with poor object naming and 2/10 with poor action naming made no morphosyntactic errors at all. Six of 10 subjects with poor action naming showed disproportionate or no morphosyntactic difficulties for verbs. Morphological errors on nouns and verbs correlated at the group level, but in individual cases a selective impairment of verb morphology was observed.Poor object and action naming with spared morphosyntax were associated with non-overlapping lesions (inferior occipitotemporal and fronto-temporal, respectively). Poor verb morphosyntax was observed with frontal-temporal lesions affecting white matter tracts deep to the insula, possibly disrupting the interaction of nodes in a fronto-temporal network. (C) 2016 Elsevier Inc. All rights reserved.