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ALS Patient Types 56 wpm via Brain-Computer Implant

6/19/2026

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Summary

Story summary

Casey Harrell, 47, with ALS, used a brain-computer implant to speak.
The implant decoded neural activity to text, letting him type at 56 wpm with 92 % accuracy and produce 183,000 sentences.
He uses eye-gaze to move the cursor, send emails, browse the web, and can enable a privacy mode.
The BrainGate 2 trial logged 3,800+ hours of his brain activity across 400 + days, yielding the largest single-neuron dataset in Nature Medicine.

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Story summary

Casey Harrell, 47, with ALS, used a brain-computer implant to speak.
The implant decoded neural activity to text, letting him type at 56 wpm with 92 % accuracy and produce 183,000 sentences.
He uses eye-gaze to move the cursor, send emails, browse the web, and can enable a privacy mode.
The BrainGate 2 trial logged 3,800+ hours of his brain activity across 400 + days, yielding the largest single-neuron dataset in Nature Medicine.