OAKLAND, CALIFORNIA: A neuroscientist who studied Albert Einstein's brain and was the first to show that the brain's anatomy can change with experience, has died.

The University of California, Berkeley said Marian Diamond died July 25 in Oakland. She was 90.

Diamond taught integrative biology at the university and became famous in 1984 when she examined preserved slices of Einstein's brain and found it had more support cells than the average person's brain.

Her groundbreaking research on rats demonstrated that the brain can improve with enrichment, while impoverished environments can lower the capacity to learn. She later found that the brain can continue to develop at any age, that male and female brains are structured differently and that brain stimulation can improve the immune system.

She is survived by four children.