Prof. Blaise Yvert et. al. published an article on the “Key considerations in designing a speech brain-computer interface”

The group of Prof. Blaise Yvert published recently a paper entitled “Key considerations in designing a speech brain-computer interface”. This article addresses the main design challenges to achieve a continuous decoding of neural signals underlying speech imagination.

There are three key choices that have to be made for a proper design: the choice of appropriate brain regions to record neural activity from, the choice of an appropriate recording technique, and the choice of a neural decoding scheme in association with an appropriate speech synthesis method. These key considerations are discussed in the paper in light of (1) the current understanding of the functional neuroanatomy of cortical areas underlying overt and covert speech production, (2) the available literature making use of a variety of brain recording techniques to better characterize and address the challenge of decoding cortical speech signals, and (3) the different speech synthesis approaches that can be considered depending on the level of speech representation (phonetic, acoustic or articulatory) envisioned to be decoded at the core of a speech BCI paradigm.