Would you reroute a train to run over one person to prevent it from running over five others? In the classic “Trolley Problem” survey, most people say they would. But I wanted to test what people would actually do in a real-life situation. In the world’s first realistic simulation of this controversial moral dilemma, unsuspecting subjects will be forced to make what they believe is a life-or-death decision.

Scientists can’t dissect living people’s brains to study their function. But by examining the behavior of people whose brains are atypical (due to stroke, injury, or being born that way), we can learn a lot about all our brains. In this episode, I travel to London to meet a blind, autistic savant with astonishing musical abilities, and I volunteer to have my own brain’s function temporarily disrupted at UCLA’s Neuromodulation Lab.

Exactly how do placebos work? Researchers believe that, through the power of suggestion, placebos may unleash the power of our own subconscious minds to cure ourselves. I was honored to participate in McGill University’s groundbreaking study of an accessory-assisted placebo. Could a fake, non-functioning “Sham Brain Scanner” enable children with ADHD and other neurological conditions to alleviate their own symptoms?

Our nervous system is fundamentally electric. We move our arm by sending a signal to the muscles that control it. That means we can bypass our brains and use electricity to control our bodies, or use our minds to control other bodies. In this episode, I explore how we can use electricity and our brains to control cockroaches, move other people’s limbs, restore motion to people who are paralyzed, and even read people’s minds.

What happens when your brain is deprived of stimulation? What effect does being cut off from interaction with the outside world have on a person? What effect does it have on Michael, when he is locked in a windowless, soundproof isolation chamber for three days? This episode of Mind Field is both an objective and a very intimate look at Isolation.

There are 100 billion individual neurons in the human brain. Working together, they allow us to make sense of, and move through, the world around us. Scientists have built replicas of the human brain with computers, but no one has ever successfully made a brain out of humans. On this episode, Michael Stevens travels back to his hometown of Stilwell, Kansas, and turn it into a working brain!

What makes a hero? Dr. Philip Zimbardo, the psychologist behind the infamous Stanford Prison Experiment, now runs seminars to teach everyday people how to be heroes. But can heroism be learned? I put his unsuspecting students into a fake crisis situation to see if they would act heroically. Also, I asked employees to help me run a seemingly dangerous experiment, to see if they would blow the whistle to stop me.

How can a lie become true? In this episode, Dr. Aaron Blaisdell and I create a game show that is actually a giant "human Skinner Box" to observe the formation of superstitious beliefs. And Dr. Samuel Veissière helps me design and perform a placebo reverse exorcism, harnessing the power of belief in both science and religion to convince normal people that a spirit has possessed their bodies.

How much do we communicate through facial expressions? Are our expressions affected by our moods, or is it the other way around? And what happens to your ability to relate to others when your facial muscles are frozen by Botox? In this episode of Mind Field, I take a look at what’s In Your Face.

We humans love to build, create, and organize. So why do we also love to destroy things? Can violently breaking stuff really help to calm us down, or does it just make us more angry? In this episode of Mind Field, I take a hard look at our urge to destroy.

So you say you love your computer or smartphone...but can it love you back? As we become more dependent on technology, and our technology becomes more lifelike, where does the line between human and computer lie? And what happens when our relationships become romantic? In this episode of Mind Field, I look into Artificial Intelligence.

Normal people can become monsters, given the right situation. That’s the standard narrative of the Stanford Prison Experiment, one of the most famous psychological experiments of all time. But what if the cause of its participants’ cruel behavior wasn’t what we’ve always been told?

How are our moral decisions influenced by factors we’re not aware of? A phenomenon known as Moral Licensing claims that when we do something good, we often subconsciously allow ourselves to then do something bad. In this episode, Michael Stevens takes a look at whether those who donate money to charity become more likely to let a kid take the blame for a crime they know they committed.

We may value having Freedom of Choice, but are we actually happier when we have limited choices...or even no choice at all? Do we truly have control over our decisions, or are they really predetermined by other forces? My fellow YouTubers and I have our minds read by a “box” that reveals who - or what - is really calling the shots.