Your brain may not experience free will as you think
According to a recent study published in Imaging Neuroscience and summarized by The conversationthe line between choices and decisions you are forced to make may be thinner and less spontaneous than it feels.
Researchers at the University of Melbourne set out to test the basic assumption that choosing one’s own free will is fundamentally different from being forced into a decision, roughly defined as taking the only option available in a situation. We like to think that they are distinct choices, each with its own distinct feeling, one personal and the other impersonal. It turns out, according to neuroscience, there really is no difference between the two.
Using EEG scans, the team monitored the brain activity of 49 participants as they made simple choices about choosing colored balloons. Sometimes they were told that they could choose a preferred balloon from a variety of options. Other times they only got one option. In both cases, participants pressed a button at the moment they made a decision, allowing the researchers to track their brain activity leading up to that choice.
Scientists say our brains can process free will and forced choices in the same way
You’d assume their brains would light up with something akin to satisfaction when they made a choice all on their own after being presented with a plethora of options. That wasn’t really the case. In both scenarios, brain activity showed a steady build-up of neural signals, almost like a loading bar, until it reached a certain point where a decision was made. Choices of free will and choices forced upon you look the same according to a brain scan, the only difference is how quickly the choice was made.
This is consistent with something neuroscientists call the Diffusion Decision Model. This is when the brain gathers evidence of different options before it until it has enough to commit to a choice. All of our personal preferences that go into that choice were just little bits of evidence that informed the process.
None of this means that free will is an illusion, man. It just means that what feels like a spontaneous decision is more the result of a lot more mental processing than it appears. Your brain does not necessarily react spontaneously. It weighs its options and reaches conclusions after careful consideration, although the final decision is made immediately.
