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Brain-computer communication : self-regulation of slow cortical potentials for verbal communication
KUBLER A; NEUMANN N; KAISER J
ARCH PHYS MED REHABIL , 2001, vol. 82, n° 11, p. 1533-1539 Doc n°: 102057 Localisation : Documentation IRR Descripteurs : KF41 - INFORMATIQUE ET COMMUNICATION
Article consultable sur : http://www.archives-pmr.org
OBJECTIVE: To test a training procedure designed to enable severely paralyzed patients to communicate by means of self-regulation of slow cortical potentials. DESIGN: Application of the Thought Translation Device to evaluate the procedure in patients with late-stage amyotrophic lateral sclerosis (ALS). SETTING: Training sessions in the patients' homes. PARTICIPANTS: Two male patients with late-stage ALS. INTERVENTIONS: Patients learned voluntary control of their slow cortical potentials by means of an interface between the brain and a computer. Training was based on visual feedback of slow cortical potentials shifts and operant learning principles. The learning process was divided into small steps of increasing difficulty. MAIN OUTCOME MEASURES: Accuracy of self-control of slow cortical potentials (percentage of correct responses). Learning progress calculated as a function of training session. RESULTS: Within 3 to 8 weeks, both patients learned to self-regulate their slow cortical potentials and to use this skill to select letters or words in the Language Support Program. CONCLUSIONS: This training schedule is the first to enable severely paralyzed patients to communicate without any voluntary muscle control by using self-regulation of an electroencephalogram potential only. The protocol could be a model for training patients in other brain-computer interface techniques. Langue : ANGLAIS Identifiant basis : 2001218012 |
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