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. 2020 Oct 28;13(2):102–108. doi: 10.1136/neurintsurg-2020-016862

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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System control performance metrics. Boxplots depict the system control performance of participant 1 (P1) and participant 2 (P2). Plots show the mean, median, interquartile range (IQR) and outliers (>±1.5*IQR) per specified performance metric calculated per trial during the typing tasks. Click selection accuracy measures the proportion of correct selections compared to the total selections made. Correct characters per minute (CCPM) measures the typing speed, correcting for errors. Bitrate measures bits transmitted per trial, irrespective of the time taken to make the selection. Information transfer rate (ITR) measures the rate of bits transferred per selection. Bitrate and ITR were calculated for the motor neuroprosthesis + eye-tracking (MN +ET) and motor neuroprosthesis alone (MN).