Steven Gill, the British neurosurgeon who ran that first GDNF infusion trial, believes the cause of the toxicity was the improper infusion of the drug into the monkeys' brains.

FORBES: Magazine Article

The first mirror neurons discovered (in the brains of monkeys) were concerned with predicting movement.

ECONOMIST: As others see us | The

After three months the level of dopamine in their brains had dramatically increased and were similar to those found in younger monkeys.

BBC: Woman's hand

Before now, he said, many of the attempts to recreate biological brains in silicon have focused on the cognitive systems found in humans, monkeys and mice.

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