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Future AI may hallucinate and get depressed — just like the rest of us

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Scientists believe the introduction of a hormone-like system, such as the one found in the human brain, could give AI the ability to reason and make decisions like people do. Recent research indicates human emotion, to a certain extent, is the byproduct of learning. And that means machines may have to risk depression or worse if they ever want to think or feel.

Zachary Mainen, a neuroscientist at the Champalimaud Centre for the Unknown in Lisbon, speaking at the Canonical Computation in Brains and Machines symposium, discussed the implications of recent experiments to discover the effects serotonin has on decision making.

According to Mainen and his team, serotonin may not be related to ‘mood’ or emotional states such as happiness, but instead is a neuro-modulator designed to update and change learning parameters in the brain.

He even opines that such mechanisms may be necessary for machine learning, despite some potentially disturbing side effects, namely the ones people suffer from. In an interview with Science, he said:

Depression and hallucinations appear to depend on a chemical in the brain called serotonin. It may be that serotonin is just a biological quirk. But if serotonin is helping solve a more general problem for intelligent systems, then machines might implement a similar function, and if serotonin goes wrong in humans, the equivalent in a machine could also go wrong.

The research is still fairly nascent and requires further testing, but experiments conducted on mice indicate serotonin plays a large role in what ‘data’ the brain chooses to keep and how much weight it’s given. In essence, the results of the research show serotonin and dopamine may be intrinsic to the facilitation of a developing intelligence.

In order to determine how serotonin affects decision making, scientists gave mice a choice between two paths, left or right. At the end of one path they placed a reward in the form of water. Once the mice were familiar with the location of the reward the team was able to trigger a serotonin response in the rodents by moving the water and surprising them. Whether the mice found the water wasn’t much of a factor in whether serotonin levels spiked or not, but whether it was surprised was.

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Article Credit: TNW

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