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Ablation
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The surgical removal of brain tissue
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Acquired alexia
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Loss of reading ability in a previously literate person
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Agnosia
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Loss of ability to recognize objects, persons, sounds, shapes, or smells in spite of intact sensory information.
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Alexia
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Inability to read
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Allocentric neglect
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Consistent processing errors on one side of individual stimuli (either right or left) regardless of location with respect to the viewer
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Amnesia
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General term for loss of memory. Anterograde amnesia is loss of memory following some trauma. Retrograde amnesia is loss of memory for period of time prior to trauma.
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Aneurysm
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A form of stroke caused by a blood vessel in the brain suddenly expanding and then bursting.
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Angular gyrus
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A region of cortex on the temporal/parietal border roughly equivalent to Brodmann's area 39. The left side is probably involved in reading (sentences).
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Anomia
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Inability to name objects or items
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Anosognosia
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A condition in which a person who suffers impairment following brain damage seems unaware of or denies the existence of their handicap, even if the handicap is severe (blindness or paralysis).
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Anterior cingulate
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A midline frontal
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Antegrade amnesia
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A form of memory loss where new events are not stored in long-term memory
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Anti-saccade
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Inhibition of a reflexive eye movement towards a light target
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Aphasia
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Deficit in the production and/or comprehension of language
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Apraxia
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The inability to carry out certain motor acts on instruction without evident loss of muscle tone (acts may be performed spontaneously, for example)
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