Murray L L, Holland A L, Beeson P M
Indiana University, Bloomington 47405, USA.
J Speech Lang Hear Res. 1998 Feb;41(1):213-27. doi: 10.1044/jslhr.4101.213.
The spoken language of individuals with mild aphasia and age-matched control subjects was studied under conditions of isolation, focused attention, and divided attention. A picture-description task was completed alone and in competition with a tone-discrimination task. Regardless of condition, individuals with aphasia performed more poorly on most morphosyntactic, lexical, and pragmatic measures of spoken language than control subjects. Increasing condition complexity resulted in little quantitative or qualitative change in the spoken language of the control group. In contrast, the individuals with aphasia showed dual-task interference; as they shifted from isolation to divided-attention conditions, they produced fewer syntactically complete and complex utterances, fewer words, and poorer word-finding accuracy. In pragmatic terms, their communication was considered less successful and less efficient. These results suggest that decrements of attentional capacity or its allocation may negatively affect the quantity and quality of the spoken language of individuals with mild aphasia.
在隔离、集中注意力和分散注意力的条件下，对患有轻度失语症的个体以及年龄匹配的对照受试者的口语进行了研究。一项图片描述任务分别单独完成，并在与音调辨别任务竞争的情况下完成。无论在何种条件下，失语症患者在大多数口语的形态句法、词汇和语用指标上的表现都比对照受试者差。条件复杂性的增加在对照组口语方面几乎没有导致数量或质量上的变化。相比之下，失语症患者表现出双重任务干扰；当他们从隔离状态转变为分散注意力的状态时，他们产生的句法完整且复杂的话语减少，词汇量减少，找词准确性也变差。从语用角度来看，他们的交流被认为不太成功且效率较低。这些结果表明，注意力容量或其分配的下降可能会对轻度失语症患者口语的数量和质量产生负面影响。
