Einstein's brain was stored after his death in 1955 and cut into 240 pieces by the pathologist who performed the autopsy. Parts of Einstein's brain were later sent to researchers in the 1980s and 1990s to be studied. Studies found that Einstein's parietal lobes were connected in unusual ways that may have allowed for his brilliance. His left hippocampus also had larger neurons than the right, implying stronger connections. Einstein's brain was smaller than average but had a greater density of neurons. He also had more glial cells per neuron than controls, suggesting increased metabolic need.