agnosia


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agnosia

 [ag-no´zhah]
inability to recognize the import of sensory impressions; the varieties correspond with several senses and are distinguished as auditory (acoustic), gustatory, olfactory, tactile, and visual.
finger agnosia loss of ability to indicate one's own or another's fingers.
tactile agnosia inability to recognize familiar objects by touch. See also astereognosis.
time agnosia loss of comprehension of the succession and duration of events.
visual agnosia inability to recognize familiar objects by sight, usually due to a lesion in one of the visual association areas. Called also object blindness and psychic blindness.
visual-spatial agnosia (visuospatial agnosia) lack of the ability to analyze and orient using visual representations and their spatial relationships.

ag·no·si·a

(ag-nō'zē-ă),
Impairment of the ability to recognize, or comprehend the meaning of, various sensory stimuli, not attributable to disorders of the primary receptors or general intellect; agnosias are receptive defects caused by lesions in various portions of the cerebrum.
Synonym(s): agnea
[G. ignorance; from a- priv. + gnōsis, knowledge]

agnosia

(ăg-nō′zhə)
n.
Loss of the ability to interpret sensory stimuli, such as sounds or images.

Agnosia

An inability to recognise sensory stimuli (objects, people, sounds, shapes or smells) in absence of a destruction of neural pathways. Agnosias are common in parietal lobe tumours, and are classified according to the sense affected—e.g., touch (tactile agnosia), hearing (auditory agnosia), sight (visual agnosia), smell (olfactory agnosia), or taste (gustatory agnosia).

agnosia

Neurology An inability to recognize sensory stimuli–objects, people, sounds, shapes or smells, common in parietal lobe tumors; agnosias are classified according to the sense affected–eg, touch–tactile agnosia, hearing—auditory agnosia, sight—visual agnosia, smell–olfactory agnosia, taste–gustatory agnosia. See Gustatory agnosia, Spatial agnosia, Visual agnosia.

ag·no·si·a

(ag-nō'zē-ă)
Impairment of ability to recognize, or comprehend the meaning of, various sensory stimuli, not attributable to disorders of the primary receptors or general intellect; receptive defects caused by lesions in various portions of the cerebrum.
[G. ignorance; from a- priv. + gnōsis, knowledge]

agnosia

A disorder of the ‘association’ areas of the brain, in which the person cannot correctly interpret sensory input. Agnosia commonly follows STROKE.

agnosia 

Inability to recognize the import of sensory stimuli (e.g. to recognize colour, faces, shape and the orientation of objects), although the receptors and the sensory pathway are intact. The condition is attributed to bilateral lesions in the association areas of the cortex. If the sense of sight is affected, it is called visual agnosia (perceptual or psychic blindness). See alexia; optical apraxia; prosopagnosia.
References in periodicals archive ?
We have presented a patient with a relatively rare syndrome of alexia without agraphia, which occurs as a consequence of vascular lesion in the left medial occipitotemporal gyrus and splenium of corpus callosum (Figures 1, 2 and 3) with abnormalities in the visual field (right sided homonymous hemianopsia), visual agnosia and anomia for colors, objects and numbers [2, 7], with all modalities of writing preserved.
Por fim, no terceiro estagio da doenca, observam-se dificuldades na compreensao (afasia), na escrita (disortografias, agrafia), na leitura (alexia) e cenario de completo mutismo atrelado a diversas modificacoes como apraxias e agnosias [9].
Heywood, "A spurious category-specific visual agnosia for living things in normal human and nonhuman primates," Journal of Cognitive Neuroscience, vol.
Es importante identificar la ausencia de afasia, apraxia y agnosia, ya que la presencia de esto podria indicar demencia cortical tipo enfermedad de Alzheimer [9].
There's a condition called prosopagnosia which comes from the Greek word 'proso', meaning 'face', and 'agnosia', meaning 'to forget', though in my experience, going on about an obscure quirk in which your brain's facial recognition software is badly wired doesn't make the people you forget feel any better!
Eventually I got over my agnosia, but not until I'd gone through a blank time very much like the one I'd endured when we first moved to Houston.
Es posible plantear de manera hipotetica una cierta agnosia del presente, que produce la simplificacion de la memoria en medio de la exacerbacion de los datos.
The pair met at Fantastic Fest in 2010, where Mira was showing his soph feature "Agnosia"--and where they sang karaoke with friends Nacho Vigalondo and RZA.
A case study in visual agnosia revisited; to see but not to see, 2d ed.
Por ejemplo, el paciente HJA tenia una lesion en las cortezas visuales primarias con agnosia visual, aunque era capaz de dibujar con detalles los objetos que se le pedia que pintara.
To this ambition is coupled relative agnosia about paradigms, not a bad thing if the goal is as pure as explicating a biochemical pathway.
Es pertinente senalar que tradicionalmente los sindromes de alteracion de las funciones psiquicas superiores provocados por lesiones locales del cerebro eran agrupados por la neurologia clasica en tres conceptos fundamentales: agnosia, apraxia y afasia.