| aphasia, primary progressive | A type of aphasia appearing gradually and gradually worsening without any major change in other cognitive functions. It is regarded by some authors as a syndrome which may be due to various degenerative diseases of the cerebral cortex (notably alzheimer disease, owing to its frequency), while others see in it an autonomous disease related to a neuropathological process that is distinct from the main degenerative dementias. The principal clinical peculiarity of primary progressive aphasia is that it spares the patient's autonomy for a long time, but ultimately turns into global dementia. (12 Dec 1998) |
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| aphasia, wernicke | Impairment in the comprehension of speech and meaning by words, both spoken and written, and of the meanings conveyed by their grammatical relationship in sentences. It is caused by a lesion primarily affecting wernicke's area, the left posterior portion of the temporal lobe. (12 Dec 1998) |
| aphasic | Relating to or suffering from aphasia. (05 Mar 2000) |
| aphasiologist | A specialist who deals with speech disorders caused by dysfunction of the language areas of the brain. (05 Mar 2000) |
| aphasiology | The science of speech disorders caused by dysfunction of the cerebral language areas. (05 Mar 2000) |
| aphasmid | 1. Lacking phasmids, as seen in nematodes of the class Adenophorasida (Aphasmidia). 2. Common name for a member of the class Aphasmidia, now Adenophorasida. (05 Mar 2000) |
| Aphasmidia | A class of nematodes lacking lateral canals opening into the excretory system and phasmids, with few or no caudal papillae, eggs unsegmented, and with polar plugs or hatching in utero. It includes the genera Trichuris, Capillaria, and Trichinella among important parasites of man and domestic animals. See: Secernentasida. Synonym: Adenophorea, Aphasmidia. Origin: G. Aden, gland, + phor, thief (05 Mar 2000) |
| aphasy | <medicine> Loss of the power of speech, or of the appropriate use of words, the vocal organs remaining intact, and the intelligence being preserved. It is dependent on injury or disease of the brain. Origin: NL. Aphasia, Gr, fr. Not spoken; priv. + to speak: cf. F. Aphasie. Source: Websters Dictionary (01 Mar 1998) |