Processing lexical ambiguities in word triplets: Evidence of lexical-semantic deficits following dominant nonthalamic subcortical lesions
Processing lexical ambiguities in word triplets: Evidence of lexical-semantic deficits following dominant nonthalamic subcortical lesions
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DOI：
10.1037/0894-4105.14.3.379
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发表时间：
2000-07-01
期刊：
影响因子：
2.4
通讯作者：
Murdoch, BE
中科院分区：
文献类型：
--
作者：
Copland, DA;Chenery, HJ;Murdoch, BE
研究人员对 10 名主要非丘脑皮层下 (NS) 区域病变的参与者和匹配的正常对照组进行了词汇语义功能研究。参与者对听觉呈现的单词三连音的第三个成员进行快速词汇决策。 4 个关键的三元组条件是一致（硬币-银行-货币）、不一致（河岸-货币）、中性（日间-银行-货币）和不相关（河-日-货币）。当三联体中单词之间的刺激间隔 (ISI) 为 100 毫秒时，患有 NS 损伤的患者获得启动，表明非选择性词汇访问；然而，在 1,250 毫秒 ISI 时，没有显着的启动效应。这种结果模式与以下观点一致：患有 NS 损伤的患者可以自动获取词汇语义信息，但可能无法通过受控或注意形式的处理来维持词汇激活。
Lexical-semantic function was investigated in 10 participants with lesions of the dominant nonthalamic subcortical (NS) region and a matched normal control group. Participants performed speeded lexical decisions on the 3rd member of auditorily presented word triplets. The 4 critical triplet conditions were concordant (coin-bank-money), discordant (riverbank-money), neutral (day-bank-money), and unrelated (river-day-money). When the interstimulus interval (ISI) between the words in the triplets was 100 ms, patients with NS lesions obtained priming that indicated nonselective lexical access; at 1,250-ms ISI, however, there was no significant priming effect. This pattern of results is consistent with the view that patients with NS lesions can automatically access lexical-semantic information but may be unable to sustain lexical activation through controlled or attentional forms of processing.