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.


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.

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.

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 Experts from CNIO discover shining cells responsible for developing tumors
30.09.2014 | Centro Nacional de Investigaciones Oncologicas (CNIO)

nachricht Single-Neuron “Hub” Orchestrates Activity of an Entire Brain Circuit
30.09.2014 | American Friends of Tel Aviv University

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

BrainScaleS Conference: From Neurobiology to New Computer Architectures

25.09.2014 | Event News

17th European Health Forum Gastein: “Electing Health – The Europe We Want”

23.09.2014 | Event News

Future questions regarding data processing

22.09.2014 | Event News

 
Latest News

NASA Ocean Data Shows ‘Climate Dance’ of Plankton

30.09.2014 | Earth Sciences

Single-Neuron “Hub” Orchestrates Activity of an Entire Brain Circuit

30.09.2014 | Life Sciences

NASA Support Key to Glacier Mapping Efforts

30.09.2014 | Earth Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>