Parietal lobes
The parietal lobes are found starting above the ear and spanning about three or four inches towards the back of the head on each side of the head. The parietal lobes can be divided into two functional regions. One involves sensation and perception and the other is concerned with integrating sensory input, primarily with the visual system. Individuals with damage to the parietal Damage to the left parietal lobe can result in right-left confusion, difficulty with writing (agraphia) and difficulty with mathematics (acalculia).