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.
Mixed transcortical aphasia
A stroke is one of the leading causes of disability in the United States. Following a stroke, 40% of stroke patients are left with moderate functional impairment and 15% to 30% have a severe disability as a result of a stroke. A neurogenic cognitive-communicative disorder is one result of a stroke. Neuro- meaning related to nerves or the nervous system and -genic meaning resulting from or caused by. Aphasia is one type of a neurogenic cognitive-communicative disorder which presents with impaired comprehension and production of speech and language, usually caused by damage in the language-dominant, left hemisphere of the brain. Aphasia is any disorder of language that causes the patient to have the inability to communicate, whether it is through writing, speaking, or sign language.