Syracuse

Probing consciousness in a sensory-disconnected paralyzed patient

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Rohaut, Benjamin | Raimondo, Federico | Galanaud, Damien | Valente, Mélanie | Sitt, Jacobo Diego | Naccache, Lionel

Edité par CCSD ; Taylor & Francis -

International audience. Background: Diagnosis of consciousness can be very challenging in some clinical situations such as severe sensory-motor impairments.Case study: We report the case study of a patient who presented a total “locked-in syndrome” associated with and a multi-sensory deafferentation (visual, auditory and tactile modalities) following a protuberantial infarction.Result: In spite of this severe and extreme disconnection from the external world, we could detect reliable evidence of consciousness using a multivariate analysis of his high-density resting state electroencephalogram. This EEG-based diagnosis was eventually confirmed by the clinical evolution of the patient.Conclusion: This approach illustrates the potential importance of functional brain-imaging data to improve diagnosis of consciousness and of cognitive abilities in critical situations in which the behavioral channel is compromised such as deafferented locked-in syndrome.

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