It sounds like the stuff of science fiction, but now it’s just science. Brain-computer interfaces are making it possible for people and other sentient creatures to control technology with their brains. Last year, Neuralink, the brain device company owned by Elon Musk, claimed it had trained a monkey to play the video game Pong using this technology. Now there are a number of private companies and academic researchers trying to improve this technology for broader use. AE Studio, a software development firm, works in this space. “Marketplace Tech” producer Daniel Shin recently visited its offices in Venice Beach, a neighborhood in Los Angeles, to test out a fun experiment — playing a video game with just his brain.