Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Movies synchronize brains

08.04.2014

When we watch a movie, our brains react to it immediately in a way similar to other people's brains.

Researchers at Aalto University in Finland have succeeded in developing a method fast enough to observe immediate changes in the function of the brain even when watching a movie. By employing movies it was possible to investigate the function of the human brain in experimental conditions that are close to natural. Traditionally, in neuroscience research, simple stimuli, such as checkerboard patterns or single images, have been used.


The study found a notable correlation between the brain signals created by films in all test participants (below), and these similar signals were found in specific areas of the brain (above). The image is an example of signal components at a frequency of 1-5 Hz.

Viewing a movie creates multilevel changes in the brain function. Despite the complexity of the stimulus, the elicited brain activity patterns show remarkable similarities across different people – even at the time scale of fractions of seconds.

- The analysis revealed important similarities between brain signals of different people during movie viewing. These similar kinds or synchronized signals were found in brain areas that are connected with the early-stage processing of visual stimuli, detection of movement and persons, motor coordination and cognitive functions. The results imply that the contents of the movie affected certain brain functions of the subjects in a similar manner, explains Kaisu Lankinen the findings of her doctoral research.

So far, studies in this field have mainly been based on functional magnetic resonance imaging (fMRI). However, given the superior temporal resolution, within milliseconds, magnetoencephalography (MEG) is able to provide more complete picture of the fast brain processes. With the help of MEG and new analysis methods, investigation of significantly faster brain processes is possible and it enables detection of brain activity in frequencies higher than before.

In the novel analysis, brain imaging was combined with machine-learning methodology, with which signals of a similar form were mined from the brain data.

The research result was recently published in the NeuroImage journal.

Link to the NeuroImage journal article:
Intersubject consistency of cortical MEG signals during movie viewing (sciencedirect.com)
Lankinen, K., Saari, J., Hari, R., Koskinen, M., 2014.


Additional information:

Miika Koskinen, D.Sc (Tech)
miika.koskinen@aalto.fi
Tel. +358 50 437 1580

Kaisu Lankinen, MSc (Tech.), Doctoral Student
kaisu.lankinen@aalto.fi
Tel. +358408659875

Aalto University School of Science
O.V. Lounasmaa Laboratory, Brain Research Unit (ltk.tkk.fi)

Miika Koskinen | EurekAlert!

More articles from Life Sciences:

nachricht Structure of world's largest single cell is reflected at the molecular level
30.01.2015 | Donald Danforth Plant Science Center

nachricht Picking up on the smell of evolution
30.01.2015 | University of Arizona

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

Better prospects through equal opportunity

26.01.2015 | Event News

2000 Erziehungswissenschaftler an der Uni Kassel erwartet

19.01.2015 | Event News

How are Europe’s landscapes influenced by the changing energy sector?

19.01.2015 | Event News

 
Latest News

Structure of world's largest single cell is reflected at the molecular level

30.01.2015 | Life Sciences

Presentation of the WorldRiskIndex with a special focus on Urban Areas in New York

30.01.2015 | Social Sciences

Picking up on the smell of evolution

30.01.2015 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>