| AGN | acute glomerulonephritis; agnosia |
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| agn | agnosia |
| topographic | Of or pertaining to topography; descriptive of a place. Topograph"ically, Topographical map. See Cadastral. Topographical surveying. See Surveying. Origin: Cf. F. Topographique. Source: Websters Dictionary (01 Mar 1998) |
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| topographic anatomy | An approach to anatomical study based on regions, parts, or divisions of the body (e.g., the foot or the inguinal region), emphasizing the relationships of various systemic structures (e.g., muscles, nerves, and arteries) within that area; distinguished from systemic anatomy. Synonym: topographic anatomy, topology. (05 Mar 2000) |
| topographic map | <anatomy, neurology> The spatially ordered projection of neurons onto their target, for example in the retino tectal projection, retinal ganglion cell axons project along the optic nerve to the contralateral tectum where they ramify to form terminal arbors. The target sites of the terminal arbors are ordered: neurons from a specific region of the retina consistently project to a specific region of the tectum, forming a map of the retina on the tectum. (18 Nov 1997) |
| agnosia | <neurology> Loss of ability to recognise objects, people, sounds, shapes or smells. Usually classified according to the sense or senses affected (hearing, sight, smell, taste, touch). Symptom common to tumours of the parietal lobe of the cerebral hemispheres. (16 Dec 1997) |
| auditory agnosia | The inability to recognise sounds, words, or music; caused by a lesion of the auditory cortex of the temporal lobe. (05 Mar 2000) |
| visual agnosia | The inability to recognise objects by sight; usually caused by bilateral parieto-occipital lesions. Synonym: optic agnosia. (05 Mar 2000) |
| visual-spatial agnosia | The inability to localise objects or to appreciate distance, motion, and spatial relationships; caused by lesion in the occipital lobe. Compare: simultanagnosia. (05 Mar 2000) |
| colour agnosia | The inability to name or identify specific colours by sight; caused by lesions of the dominant occipital and temporal lobes. (05 Mar 2000) |
| position agnosia | The failure to recognise the posture of an extremity. (05 Mar 2000) |
| optic agnosia | The inability to recognise objects by sight; usually caused by bilateral parieto-occipital lesions. Synonym: optic agnosia. (05 Mar 2000) |
| tactile agnosia | The inability to recognise objects by touch, in the presence of intact cutaneous and proprioceptive hand sensation; caused by lesion in the contralateral parietal lobe. Synonym: astereognosis, stereoagnosis, stereoanesthesia. (05 Mar 2000) |
| finger agnosia | The inability to name or recognise individual fingers, of one's own or of other persons; most often caused by lesion of or near the angular gyrus of the dominant hemisphere. (05 Mar 2000) |
| localization agnosia | The inability to recognise the area where the skin is touched. (05 Mar 2000) |
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