title: Amyotrophic lateral sclerosis progression and stability of brain-computer interface communication.
abstract: Our objective was to investigate the relationship between brain-computer interface (BCI) communication skill and disease progression in amyotrophic lateral sclerosis (ALS). We sought also to assess stability of BCI communication performance over time and whether it is related to the progression of neurological impairment before entering the locked-in state. A three years follow-up, BCI evaluation in a group of ALS patients (n = 24) was conducted. For a variety of reasons only three patients completed the three years follow-up. BCI communication skill and disability level, using the Amyotrophic Lateral Sclerosis Functional Rating Scale-Revised, were assessed at admission and at each of the three follow-ups. Multiple non-parametric statistical methods were used to ensure reliability of the dependent variables: correlations, paired test and factor analysis of variance. Results demonstrated no significant relationship between BCI communication skill (BCI-CS) and disease evolution. The patients who performed the follow-up evaluations preserved their BCI-CS over time. Patients' age at admission correlated positively with the ability to achieve control over a BCI. In conclusion, disease evolution in ALS does not affect the ability to control a BCI for communication. BCI performance can be maintained in the different stages of the illness.
authors: Department of Neurophysiology, I.R.R.C.S., S. Camillo Hospital Foundation, Via Alberoni 70, Venice, Italy. stefano.silvoni@ospedalesancamillo.net
authors: Stefano
authors: S
authors: Silvoni
authors: Marianna
authors: M
authors: Cavinato
authors: Chiara
authors: C
authors: Volpato
authors: Carolin A
authors: CA
authors: Ruf
authors: Niels
authors: N
authors: Birbaumer
authors: Francesco
authors: F
authors: Piccione
mesh_terms: D000328:Adult; D000368:Aged; D000690:Amyotrophic Lateral Sclerosis / Q000503:physiopathology*; D001921:Brain / Q000503:physiopathology*; D062207:Brain-Computer Interfaces; D003142:Communication; D003143:Communication Devices for People with Disabilities; D018450:Disease Progression; D018913:Event-Related Potentials, P300 / Q000502:physiology*; D005071:Evoked Potentials / Q000502:physiology; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged