Journal

The Japanese journal of neuropsychology

[Vol.30 No.2 contents]
Japanese/English

Full Text of this Article
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ArticleTitle Assessment of aphasia
Language J
AuthorList Masako Abe
Affiliation Department of Speech and Hearing Sciences, School of Health Sciences, International University of Health and Welfare
Publication Japanese Journal of Neuropsychology: 30 (2), 109-115, 2014
Received
Accepted
Abstract The author described the method of assessment of auditory word comprehension deficit in aphasia. It is necessary to evaluate the deficit based on the word information process. First of all, the auditory analysis system processes the speech wave, and identifies phonemes. Next, the auditory input lexicon recognizes familiar spoken words. It enables us to judge whether the speech sound is a word or a nonword. And, the output from the auditory input lexicon accesses to the semantic system. The semantic system stored the knowledge of things such as objects. The activation of the semantic system completes auditory comprehension of words.
Along this auditory information process, the author explained the methods which precisely examine the comprehension problems in aphasic patients. For the auditory analysis system, phoneme discrimination and identification tests are widely used. For the evaluation of the auditory input lexicon, we can use the lexical decision tasks which are the subtests of Test of Lexical Processing in Aphasia (TLPA) and Sophia Analysis of Language in Aphasia (SALA). For the assess from the auditory input lexicon to semantic system, the subtest of auditory comprehension of nouns in ten semantic categories in the TLPA and the subtest of nouns/verbs comprehension in TLPA and SALA give us valuable information. Tests of word similarity judgment and comprehension of abstract words are also useful. About the semantic system, the pyramids and palm trees test (PPT) is known and widely used.
The visual word comprehension doesn't always correspond to the auditory wore comprehension. The category-specific deficit might be observed only in an auditory modality. It is important for such a case to compare the auditory comprehension with the visual comprehension using the words belonging to various semantic categories.
Keywords aphasia, auditory comprehension, phoneme identification, lexical decision, category-specific comprehension deficit

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