Brain Activity Synchronization During Movie Viewing
Author Information
Author(s): Iiro P. Jääskeläinen, Katri Koskentalo, Marja H. Balk, Taina Autti, Jaakko Kauramäki, Cajus Pomren, Mikko Sams
Primary Institution: Helsinki University of Technology
Hypothesis
We hypothesized that we would replicate the previous findings of intersubject synchronization of sensory and non-frontal association cortex activations, and that we would additionally see significant intersubject synchronization of the prefrontal areas.
Conclusion
The study found significant inter-subject synchronization of brain activity in the prefrontal cortex and other areas while participants watched a movie.
Supporting Evidence
- Significant inter-subject correlations were observed in many cortical areas during movie viewing.
- Probabilistic ICA revealed meaningful activations in individual subjects during natural viewing.
- Emotional engagement during the movie correlated with brain activity in the prefrontal areas.
Takeaway
When people watch a movie together, their brains can sync up, especially in the front part that helps with thinking and feeling.
Methodology
12 healthy volunteers watched a movie, with the first part outside an fMRI scanner and the last part during scanning, while their brain activity was recorded.
Limitations
The study's design limited the ability to detect individual variability in brain responses.
Participant Demographics
12 healthy right-handed subjects, age range 19–44, with 7 females.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website