Figure 2
From: Long-term use of a neural prosthesis in progressive paralysis
Performance of amyotrophic lateral sclerosis (ALS) patients #S1, #S2, and #S3 on the EEG-BCI system attend/ignore task. In the attend/ignore task, online accuracy was averaged for each month in all participants. The mean online performance in the attend/ignore task over all experiments and patients (191 sessions and 2,052 task trials) was 84.3%, and the means for the individual participants were 81.3% (#S1), 92.5% (#S2), 78.9% (#S3). The black broken horizontal lines indicate the upper confidence limits16 for results obtained by chance during each month; we calculated the proportions of results below the 95% confidence interval. The black solid horizontal lines indicate the chance rate of each class (#S1: four-class, 25%, #S2: three-class, 33.3%, #S3: two-class, 50%). The light gray bars indicate that the patients had LIS. The light gray bars with slanted stripes indicate that the patient was transitioning from LIS to CLIS. Note that patient #S3 showed BCI performance with reliable accuracy even after progression to CLIS.
