Fundamental Research Division
The DRF at the CEA assemble approximately 6,000 scientists since January 2016.
Scientific result | Cognition | Brain
Researchers from the Institut Frédéric-Joliot have discovered how the brain integrates and filters information, by combining temporal high-resolution brain imaging techniques and machine learning algorithms.
Our brain is constantly bombarded with sensory information. Far from being overloaded, the brain is a real expert in managing this stream of information. NeuroSpin researchers from the Institut Frédéric-Joliot have discovered the mechanisms of information filtering. By combining magnetoencephalography (MEG) and machine learning algorithms, they have determined the sequence of neuronal operations that allows the brain to specifically select relevant information. The majority of the information is processed and filtered unconsciously by our brain. Within this stream, the relevant information is selected by a three-step operation and distributed to the associative regions of the brain, in order to be memorized.
The researchers measured the brain activity of 15 participants, while the participants had to identify a "target" image in a stream of 10 images per second. The neurobiologists were thus able to observe three successive operations allowing the participants to process and sort the stream of images:
Bombarded by an ever-increasing amount of information, our brain is still able to manage the surplus of data thanks to an automatic, effortless filtering mechanism and a three-step selection process. Technological advances in brain imaging and information science have provided a tremendous boost to neuroscience research, and this study is a good example.
Discrete and continuous mechanisms of temporal selection in rapid visual streams | Nature communications
CEA is a French government-funded technological research organisation in four main areas: low-carbon energies, defense and security, information technologies and health technologies. A prominent player in the European Research Area, it is involved in setting up collaborative projects with many partners around the world.