Added 130 to 170 Hz power gave no clear error gain in ten SEEG listeners with eight fixed pairs and 400 ms added delay

We tested if 130 to 170 Hz power improved sound amplitude reading beyond 70 to 110 Hz power. The test used ten SEEG listeners and 95 heard-speech passages from OpenNeuro ds004703, version 1.1.0. Each person had eight pairs selected with lower-band training data and a 400 ms added delay. The reader was fitted to early passages and tested on later passages. Mean normalized error skill changed by +0.25 percentage points. The descriptive 95% interval was -2.26 to +2.48 points. Six people improved and four got worse. The result gives no clear group error gain and does not prove that the readers are equivalent. The test did not assess intended speech, a live interface, or brain stimulation. The source archive preserves four figures, source code, compact data, fitted readers, predictions, source versions, hashes, and replay instructions. A fresh public-source rebuild matched all 95 passages. An independent solver checked all 80 main readers. A separate full replay matched all 177 analysis files. The SCI contribution retains figures, numerical results, models, predictions, provenance, and MIT-licensed code, but omits recordings, audio, event tables, and compact source-derived inputs because the dataset metadata and README give conflicting terms. Replaying the analysis requires obtaining and rebuilding those inputs under the source terms.

stereo-electroencephalography · speech amplitude · brain-computer interface · ridge regression · gamma-band power