A fixed baseline rule lowered the rate of high-gamma power changes above 3 dB among retained SEEG channels in 103 visual stimulation records from 19 people
We tested a fixed channel rule on public OpenNeuro ds005169, version 1.0.0. The rule kept about 80 percent of channels with the smallest power change between two baseline windows. The main outcome used 70 to 150 Hz power and the mean of the baseline log powers. Across 103 visual stimulation records from 19 people, the large-change rate fell from 10.89 to 7.98 percent among retained channels. The mean reduction was 2.91 percentage points, with a 95 percent person bootstrap interval of 1.59 to 4.43 points. The reduction was positive in 17 people. All 112 public recordings were rebuilt from hash-checked raw files. A constant-power simulation showed why a last-baseline reference can give a false benefit. The rule kept 959 of 1,614 large changes, including a 43.40 dB change. This reused cohort supports power-change screening only. It does not show better decoding or safe stimulation. The package preserves code, spectra, source hashes, complete results, and four figures.
stereoelectroencephalography · SEEG · high-gamma power · baseline stability · channel selection · visual stimulation · brain-computer interface · power spectra
References
3- usessci:sha256:3d1647c9a767ea0b389c4475596fc0a13c65b2f5d64e1cb07e481cdea7a95f9f not known to Sciscape
We used the complete spectrum archive, fixed frequency mask, source metadata, source hashes, and unchanged raw extraction code. We checked the archive inputs and rebuilt all 112 spectrum records from the public raw files. The new work tests a baseline channel rule with a symmetric power reference and reports its missed changes. It reuses the parent cohort.
- usesdoi:10.18112/openneuro.ds005169.v1.0.0
The analysis used the public SEEG data from OpenNeuro ds005169 version 1.0.0.
- doi:10.1002/hbm.25749
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesA fixed early power rule gave no clear late stability gain with separate references at about 80% retention in 99 SEEG records from 19 people
Used its ranking by absolute baseline power change and its equal-count retention design. Its shared-reference analysis informed this study. The new test compares an early rule with that baseline ranking and uses a different late outcome.
- usesChannels kept by an 80% baseline rule had lower rates of high-gamma change above 3 dB in separate later windows of 99 visual and 33 motor SEEG records
This work supplied the 80% baseline stability rule and the concern about a shared baseline reference. The current test uses two separate later windows, so the rank and outcome share no power estimate.