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- W2945748036 abstract "Abstract Multi-person neuroscience studies have demonstrated that synchrony across participants’ brains (‘brain-to-brain synchrony’) can predict a range of cognitive and social phenomena. However, it is unclear whether brain-to-brain synchrony can predict individual outcomes, specifically long-term memory retention, better than intra-brain measures. Here we recorded EEG in a laboratory classroom from groups of four students and a teacher during a science lesson. We show that alpha-band (8-12Hz) brain-to-brain synchrony, but not alpha power or intra-brain alpha synchrony, significantly predict students’ performance in both an immediate and a delayed post-test. Remarkably, moment-to-moment variation in alpha-band brain-to-brain synchrony during the lesson were found to indicate what specific information was retained by the students a week later. Whereas student-to-student brain synchrony was instantaneous, student-to-teacher brain synchrony best predicted learning when adjusting for a ∼200 millisecond lag in the students’ brain activity relative to the teacher’s brain activity, suggesting a sequential, lagged transfer of information from teachers to students. These findings provide key new evidence for the importance of brain data collected simultaneously from groups of individuals using ecologically-valid materials and substantially extend the brain-as-predictor approach by demonstrating that the predictive value of two brains can exceed that of individual brains. Significance Statement The brain mechanisms that underlie how people learn while interacting with one another are not well understood. Here, we concurrently measured EEG activity from groups of four students and a teacher during a science lesson. Our findings revealed that both student-to-student and student-to-teacher brain synchrony can predict how much information students retained after one week. Furthermore, brain-to-brain synchrony predicted retention above and beyond measures derived from individual brains. These results provide critical evidence for the importance of brain data collected simultaneously from groups of individuals using ecologically-valid materials." @default.
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- W2945748036 date "2019-05-21" @default.
- W2945748036 modified "2023-09-24" @default.
- W2945748036 title "Brain-to-brain synchrony predicts long-term memory retention more accurately than individual brain measures" @default.
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