For years, Suzanne Dikker has been trying to answer a question that sounds almost poetic: can science actually measure when people are "on the same wavelength"? The answer, her research now suggests, is yes—and not just measure it, but strengthen it.
Dikker, a research professor at New York University and Ghent University, spent a decade studying brainwave synchrony, collaborating with an unlikely mix of partners that included high school biology students, museum visitors, and major artists like Bad Bunny and Residente. Using portable electroencephalogram (EEG) headsets, she and her team recorded the brain activity of thousands of people during real face-to-face interactions.
One of the most striking findings came from a semester-long study of a group of high school students and their teacher. The researchers discovered that when students' brain waves synchronized with each other, they were more likely to report actually liking their classmates—and the class itself. "Social synchrony plays an important role in healthy social relationships and in learning," Dikker noted.
The research team, which included collaborators from Zhejiang University, Shenzhen University, and the University of Montreal, pushed further. In 2019, Dikker worked directly with Bad Bunny and Residente, mapping their brain activity as they created the song "Bellacoso" and showing them in real time how in sync their brain waves were—giving the artists a chance to experiment with different "syncing strategies." Musicians Mike Gordon and Bob Weir participated in a similar project in 2023.
The findings point to what the researchers call "social synchrony"—the alignment of our brain rhythms, bodies, and language with people around us during communication. This synchronization appears to be more than just an interesting phenomenon; it's linked to genuine social connection. Dikker notes that lonely individuals tend to show more idiosyncratic brain activity, while everyday activities like playing games or casual conversation seem to naturally boost interpersonal synchrony.
Now, Dikker and colleagues at the University of California, San Diego are taking the next step: testing how to deploy this phenomenon in clinical settings. The goal is to find new ways to leverage brainwave synchronization to improve therapeutic outcomes—essentially, to engineer social connectedness for those who need it most.
"Our years of experiments show that we can consistently measure the seemingly elusive notion of 'being on the same wavelength' with someone else," said Dikker. "Taking the next step, we've also been able to design interventions that boost social synchrony."
The research, published in the journal Trends in Cognitive Sciences, offers a hopeful possibility: that the invisible threads connecting us—those moments when minds truly meet—might not remain invisible for much longer.