Scientists Discover the Bruh Brain Circuit

In 2025, a multinational team of scientists discovered the Bruh Brain Circuit.

What’s the Bruh Brain Circuit? Well, picture it this way: Most evenings, after a hard day’s work, you’re eager to Netflix and chill with your lovely lady. Now and again, though, it feels like a switch gets flipped. Suddenly, you’re Jonesing to head down to the pub and let off some steam with the boys. You’ve always wondered about the reasons and now we know why!! It’s the Bruh Brain Circuit that’s to blame (or thank).

To be fair, the researchers didn’t call it the Bruh Brain Circuit. Another thing I’ve got to admit, they were studying rodents, not people.

In any case, let’s talk a little about the experiment. The scientists got together a bunch of mice. They determined that, under normal circumstances, all the mice liked to hang out with the ladies. That was true whether the mice were dudes or chicks. Ladies rule!

Then the scientists exposed the mice to threatening situations.

Guess what happened? All the mice suddenly changed their tunes. Whether dudes or chicks, none of the mice were into The View anymore. They switched channels. They all binge watched Band of Brothers.

The researchers went on to investigate the underlying brain anatomy. That’s when they discovered the Bruh Brain Circuit, which was responsible for the switch; a preference for male social interaction.

The neural circuitry was slightly different in male vs female mice. Fundamentally though, when facing survival threats, dopamine mediated neurons (brain cells) in the Ventral Tegmental Area (a part of the brain that plays a key role in motivation, learning, and emotional regulation) sent out axons (cables that transmit electrochemical signal) which toggled between the Medial Preoptic Area (a part of the hypothalamus that regulates social behaviors, sexual behavior, and body temperature) and the Nucleus Accumbens (a brain structure that plays a key role in reward, motivation, and decision-making).

The most fascinating aspect of the Bruh Brain Circuit is that it involves crossing the three brain boundary. We all have three brains in our skull: A neocortex for thinking. A limbic system for emotion. And a reptilian brain for base instincts.

When a preference for female social interaction predominates, the reptilian brain is mollified by cross circuitry with the limbic system. Once a survival threat rears its head, though, the mitigating limbic cerebral factor is switched off. When the Bruh Brain Circuit is triggered, it’s locked and loaded; all reptilian brain.

Want to learn more about the three brains? Check out https://brain2mind.substack.com/p/how-do-you-get-your-3-brains-in-sync