Murray L L
Department of Speech and Hearing Sciences, Indiana University, Bloomington, IN 47405, USA.
Brain Lang. 2000 Mar;72(1):40-72. doi: 10.1006/brln.1999.2281.
Adults with mild aphasia, right hemisphere brain damage (RBD), or no brain damage (NBD) provided one-word phrase completions under isolation, focused attention, and divided attention conditions and in response to relatively constrained or unconstrained phrase stems. Despite comparable word retrieval accuracy among groups during the isolation condition, aphasic and RBD groups performed less accurately than the NBD group during focused and divided attention conditions. Across conditions, there were no significant differences between aphasic and RBD groups. Only aphasic subjects demonstrated a significant effect of phrase type, responding more accurately when completing constrained versus unconstrained stimuli. For aphasic and RBD groups, error type analysis indicated that semantic and phonological aspects of word retrieval were influenced by increased attentional demands. These findings suggest that for adults with aphasia or RBD, there is a negative relation between attention impairments and word retrieval abilities.
患有轻度失语症、右脑损伤（RBD）或无脑损伤（NBD）的成年人在隔离、集中注意力和分散注意力的条件下，以及对相对受限或不受限的短语词干做出反应时，完成单词短语填空。尽管在隔离条件下各群体之间的单词检索准确性相当，但在集中注意力和分散注意力条件下，失语症组和RBD组的表现不如NBD组准确。在所有条件下，失语症组和RBD组之间没有显著差异。只有失语症受试者表现出短语类型的显著影响，在完成受限刺激与不受限刺激时反应更准确。对于失语症组和RBD组，错误类型分析表明，单词检索的语义和语音方面受到注意力需求增加的影响。这些发现表明，对于患有失语症或RBD的成年人，注意力损伤与单词检索能力之间存在负相关。
