How does agnosia affect the brain?
Agnosia
Agnosia can result from strokes, dementia, or other neurological disorders. It may also be trauma-induced by a head injury, brain infection, or hereditary.  Additionally, some forms of agnosia may be the result of developmental disorders.[4] Damage causing agnosia usually occurs in either the occipital or parietal lobes of the brain.  Although one modality may be affected, cognitive abilities in other areas are preserved.[4]