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- Stable Decoding from a Speech BCI Enables Control for an Individual with ALS without Recalibration for 3 Months

Electrode contribution during the study period. a) MRI reconstruction of the participant's brain, overlaid on top of which are the ECoG grids implanted as part of the clinical trial. Electrodes used in this study are colored in red (motor) and blue (sensory). The grey electrodes were not used in this study. b) Simulated online accuracy when the decoding model is trained with both motor and sensory electrodes, only motor electrodes, only sensory electrodes, and only the most salient electrode. Chance = 16.67% (shown as dashed line). Each box corresponds to the accuracy for n = 33 testing days (****p < 0.0001, Mann–Whitney‐Wilcoxon test two‐sided with Bonferroni correction). c) Relative contribution of each of the electrodes to the decoding results for each real‐time usage month.
Electrode contribution during the study period. a) MRI reconstruction of the participant's brain, overlaid on top of which are the ECoG grids implanted as part of the clinical trial. Electrodes used in this study are colored in red (motor) and blue (sensory). The grey electrodes were not used in this study. b) Simulated online accuracy when the decoding model is trained with both motor and sensory electrodes, only motor electrodes, only sensory electrodes, and only the most salient electrode. Chance = 16.67% (shown as dashed line). Each box corresponds to the accuracy for n = 33 testing days (****p < 0.0001, Mann–Whitney‐Wilcoxon test two‐sided with Bonferroni correction). c) Relative contribution of each of the electrodes to the decoding results for each real‐time usage month.
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