Five later pulses did not establish higher correlation of signed template strengths across shafts after stimulation in eight SEEG sessions

A brain-computer interface can use a remote SEEG response to check a stimulation pulse. We tested whether signed response strengths vary together across recording shafts. We used public OpenNeuro data from eight epilepsy patient sessions. Five early pulses set each template and selected one readout per shaft. Five later pulses gave the test scores. The analysis used 16-sample bin means at 83 stimulation sites. Mean correlation was 0.068 at 20–500 ms after each pulse and 0.047 at −980 to −500 ms before it. The equal-subject difference was +0.021. Its 95 percent subject bootstrap interval was [-0.039, +0.088]. The exact two-sided sign-flip p value was 0.578. The data did not establish higher correlation after stimulation. They do not prove independence. The package contains pulse scores, source products, figures, and source retrieval instructions; GPL code is omitted from the SCI payload.

stereoelectroencephalography · electrical stimulation · brain-computer interface · signed response strength · signal correlation · template projection · OpenNeuro