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.
Fusiform body area
There is evidence that the FBA plays a critical role in how individuals with Anorexia Nervosa (AN) perceive their own bodies and the bodies of others. In the article Body Image Distortion Reveals Amygdala Activation in Patients with Anorexia Nervosa - a Functional Magnetic Resonance Imaging Study" by Gert Seeger and colleagues found that as well as amygdala activation (the brain's fear network), there was activation in the right gyrus fusiform in anorectic patients, but not healthy age-matched controls. This suggests that due to being overly aware and critical of body forms, increased activation in what we now know as the FBA is to be expected. As this study was conducted before the identification of the FBA, the fusiform gyrus activation can be considered previous evidence for the FBA being involved in body perception.