Notes

These two pathways are doing different things and it has been found through lesion studies. Monkeys with parietal cortex lesions were not able to perform tasks associated with object localisation, but they were capable of object identification. On the contrary, monkeys with temporal cortex lesions were still capable of object localization but were defecting of object recognition skills. Hence, the conclusion that temporal and parietal cortices are both involved in processing visual information, but they have distinct roles. The temporal cortex is primarily involved in object discrimination, while the parietal cortex is involved in landmark discrimination. Visual Agnosia: Inability to recognize objects, often associated with face recognition problems (Prosopagnosia). In the case of parietal cortex lesions, it is often associated with neglect symptoms, i.e., patients tend to ignore a complete visual hemisphere.