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Aplysia, the Supersnail of Memory Research Eric Kandel (b. 1929) used Aplysia, a sea snail with only about 20,000 neurons, to study how neurons change when simple behaviors are learned and remembered. Kandel, pictured here in his laboratory, was awarded the Nobel Prize in 2000 for his discoveries on the neural basis of memory.
Gaby Gerster/laif/Redux