Medicina: Neuropsicologia cognitiva
| English |
| pure alexia |
  |
|
| Attestation |
3
|
| Part of speech |
Noun phrase
|
| Definition |
An acquired inability to read without a corresponding deficit in writing. Patients are unable to read their own written words.
Inability to read without a corresponding deficit in writing. Patients with pure agraphia continue to be able to write, spontaneously or to dictation. Many such patients can also copy writing, although they do so with difficulty. Speech, auditory comprehension, and repetition are intact. Oral spelling of words (or its converse, the construction of words spelled orally) is normal. It is generally associated with large ischemic lesions in the posterior cerebral artery territory of the language dominant hemisphere that affects both the visual cortex and the posterior corpus callosum.
|
| Definition source |
Loring D. W. 1999
Vista-Mead 2001
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| Context |
Patients displaying pure alexia (also commonly called "alexia without agraphia" in the neurological literature and "letter-by-letter reading" in the neuropsychological literature) are poor at identifying written words, where poor always means slow-with word-naming speed a monotonic function of word length, hence the sobriquet letter-by-letter reading-and often inaccurate as well. By contrast, these patients typically show excellent performance at recognising words spelled aloud to them.
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| Context source |
Riddoch et al. 1994
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| Synonym |
Alexia without agraphia
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| Subject field |
Aphasia
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| Sub-field (level 1) |
Aphasiology
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| Sub-field (level 2) |
Clinical neuropsychology
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| Sub-field (level 3) |
Aphasic syndromes
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| Generic concept |
Pure form
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| Related concept |
Alexia with agraphia, Pure word deafness, Pure agraphia, Anarthria
|
| it |
Forma pura
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| Reliability code |
3
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