Context
Speech features of sleepiness

The act of speaking mobilizes numerous neuromotor and neurolinguistic processes, as well as cognitive processes such as memory and hearing. The development of specific vocal markers makes it possible to detect a disease through the interference it causes with these processes. This is the case for neurodegenerative diseases such as Alzheimer's or Parkinson's, but also for mental disorders such as depression, anxiety or, more recently, certain forms of schizophrenia, for which very good classification performances have been reported in the literature (for neurodegenerative diseases, see the reviews in