From Vishal Choudhari, PhD, and the lab of Nima Mesgarani, PhD, at Columbia University’s Zuckerman Institute: A new tech monitors the brain to detect who you are listening to. It then amplifies that voice and quiets other voices nearby. Brain surgery patients recently tested the system in hospitals. They heard two overlapping conversations, one on each side. The volunteers then tried to focus on only one conversation. One video here shows a man listening to the overlapping conversations. Researchers ask him to focus on the conversation on his right. Controlled by his brain activity, the system adjusts the volume. In another experiment, he again focuses his attention on the right. The system notices, amplifying a conversation about bread. Then, researchers ask him to switch to the left conversation. The mind reading system turns about another conversation, about repairs. In a different experience, a volunteer can freely choose what to listen to. He starts on the right. A graph appears, showing the system monitoring his brain activity. What happens when he switches from right to left? The system spots his shift in attention and adjusts the volume. Scientists asked volunteers about the experience. “In the second section, what I was listening to was louder, and the other thing was quieter. And in the first section, they were both equally loud. That’s super dope.” “I think if you could really implement it in the hearing aids, if this is the goal, I think it would be really helpful to just be able to have someone who is hard of hearing be able to kind of pinpoint exactly the conversation they want to have, especially if you’re in a location with a lot of people.” “Well I just keep thinking about about Uncle Aaron. Can you imagine if this technology existed in a world that he could access it? He might actually live a much more peaceful… life.”