Fact · Voice and AI
67percent character error rate
The same 2025 preprint reports a character error rate of 67 percent when the decoder uses electroencephalography (EEG) recordings instead of MEG.
Checked against its source on October 17, 2026
In the source's own words
“substantially outperforms EEG (CER: 67%)”
Brain-to-Text Decoding: A Non-invasive Approach via Typing, Jarod Levy et al., arXiv (preprint), 2025, Abstract.
Open the original- What it measures
- EEG measures electrical activity through electrodes on the scalp, which is far cheaper and more portable than MEG. The two recordings were compared in the same study.
- What it does not show
- The preprint reports the average across its volunteers. Character error rates count wrong letters, so this figure is not a word error rate.