How does a memory form? To demonstrate how this process occurs at the most basic level, biophysicists at Tel Aviv University replicated that event with neurons attached to a computer chip. Itay Baruchi and Eshel Ben-Jacob placed neurons from rat embryos on a chip surface and connected 64 electrodes to record activity. The researchers witnessed an identical pattern of nerve firings when chemical stimulants were dropped repeatedly at the same location on the chip. After some time, the neurons began to fire in the same way without chemical activation—the point at which they claim a memory becomes imprinted.