Location of Brain Damage
Each patient that suffers from apperceptive agnosia does not have brain damage in exactly the same area. However, brain damage in proximity to the occipital lobe is largely correlated with the patterns of deficit seen in apperceptive agnosics. For example patient JB suffered extensive damage to the parietal-occipital areas to the left cerebral hemisphere leading to his deficit in the ability to name distinguish between structurally similar object.
Visually presented object recognition is largely mediated by a hierarchical occipitotemporal pathway. This pathway facilitates the distinction between regions allowing the processing of the visual features of objects. In addition the occipitoparietal pathway is sometimes damaged in apperceptive agnosia patients. Damage to this region leads to impairments in localization of visual stimuli.
Read more about this topic: Apperceptive Agnosia
Famous quotes containing the words brain and/or damage:
“She turns and looks a moment in the glass,
Hardly aware of her departed lover;
Her brain allows one half-formed thought to pass:
“Well now that’s done: and I’m glad it’s over.””
—T.S. (Thomas Stearns)
“There is such a thing as food and such a thing as poison. But the damage done by those who pass off poison as food is far less than that done by those who generation after generation convince people that food is poison.”
—Paul Goodman (1911–1972)