The researchers then looked at the EEG data on certain brain waves, called beta and gamma waves. Results showed that the beta brain waves were linked with people’s rankings of the movies: The more beta wave brain activity there was as a participant watched a movie, the higher that individual ranked the movie.
In another part of the study, the researchers wanted to see if they could find a way to predict how the students ranked the movies without looking at their actual rankings, based only on how much the students said they liked each movie.
The researchers found that they could in fact create a mathematical way to predict the students’ movie rankings, but their predictions were more accurate when they included both the brain wave data and participant’s stated feelings about the movies, rather than only the stated feelings alone.
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