Apperceptive agnosia
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.
Societal and cultural aspects of autism
Two traits sometimes found in AS individuals are mind-blindness (the inability to predict the beliefs and intentions of others) and alexithymia (the inability to identify and interpret emotional signals in oneself or others), which reduce the ability to be empathetically attuned to others. Alexithymia in AS functions as an independent variable relying on different neural networks than those implicated in theory of mind. In fact, lack of Theory of Mind in AS may be a result of a lack of information available to the mind due to the operation of the alexithymic deficit.