Pandey Ajay Kumar, Heilman Kenneth M
*Department of Neurology, University of Florida College of Medicine, Gainesville, FL †Malcom Randall Veterans Affairs Medical Center, Gainesville, FL.
Cogn Behav Neurol. 2014 Jun;27(2):96-101. doi: 10.1097/WNN.0000000000000029.
Conduction aphasia, most often caused by damage to the inferior parietal lobe and arcuate fasciculus, is usually characterized by mildly dysfluent speech with frequent phonemic paraphasic errors, impaired repetition, and impaired word finding and naming, but with relatively spared comprehension. We report an 86-year-old right-handed man with conduction aphasia caused by an infarction that damaged his right temporoparietal region. On testing with the Western Aphasia Battery, however, he named objects almost perfectly. To test his naming ability further, we showed him half the items in the Boston Naming Test; we described or defined the other half of the items, but did not show them to the patient. He performed excellently when naming the objects that he could see, but he had difficulty naming the objects that were only described or defined. These observations suggest that visual word naming may be mediated by a network that is somewhat independent of the networks that mediate spontaneous word finding and word finding based on verbal descriptions or definitions.
传导性失语通常由顶下叶和弓状束受损引起，其特征通常为言语轻度不流畅，频繁出现音素性错语，复述受损，找词和命名能力受损，但理解能力相对保留。我们报告了一名86岁的右利手男性，因梗死导致右颞顶叶区域受损而患有传导性失语。然而，在使用西方失语成套测验进行测试时，他对物体的命名几乎完美。为了进一步测试他的命名能力，我们向他展示了波士顿命名测验中的一半物品；我们描述或定义了另一半物品，但没有向患者展示。他在命名能看到的物体时表现出色，但在命名仅被描述或定义的物体时遇到了困难。这些观察结果表明，视觉单词命名可能由一个网络介导，该网络在一定程度上独立于介导自发找词以及基于言语描述或定义找词的网络。
