An artificial brain system enabled a robot to learn, and subsequently understand, new sentences containing a new grammatical structure.
INSERM and CNRS researchers and the Universite Lyon 1 have succeeded in developing an “artificial neuronal network” constructed on the basis of a fundamental principle of the workings of the human brain, namely its ability to learn a new language.
Thanks to so-called recurrent construction (with connections that create locally recurring loops) this artificial brain system can understand new sentences having a new grammatical structure. It is capable of linking two sentences and can even predict the end of a sentence before it is provided.
The model was developed after years of research in the INSERM 846 Unit of the Institut de recherche sur les cellules souches et cerveau, through studying the structure of the human brain and understanding the mechanisms used for learning.
To put this advance into a real-life situation, the INSERM researchers incorporated this new brain into the iCub humanoid robot.
In a video demonstration, a researcher asks the iCub robot to point to a guitar (shown in the form of blue object) then asking it to move a violin to the left (shown by a red object). Before performing the task, the robot repeats the sentence and explains that it has fully understood what it has been asked to do.
For researchers, the contribution that this makes to research into certain diseases is of major importance. This system can be used to understand better the way in which the brain processes language.
“We know that when an unexpected word occurs in a sentence, the brain reacts in a particular way. These reactions could hitherto be recorded by sensors placed on the scalp”, explained Dr Peter Ford Dominey.
The model developed by Dr Xavier Hinaut and Dr Dominey makes it possible to identify the source of these responses in the brain. If this model, based on the organisation of the cerebral cortex, is accurate, it could contribute to possible linguistic malfunctions in Parkinson’s disease.
This research has another important implication, that of contributing to the ability of robots to learn a language one day.
This research has been published in the Plos One journal.