Alpha excess selection gave more test window excess than alpha power selection in 19 SEEG records with an average reference
We compared contact selection by total alpha power with selection by alpha excess above a local spectral background. We used 19 public SEEG records from OpenNeuro ds003876 version 1.0.2 and 2,070 good contacts. We used an average reference. Each rule selected the top 10 percent of contacts in one minute. We tested those contacts in the next minute. Mean contact overlap was 32.1 percent. Excess selection gave 1.435 dB more test excess. The patient bootstrap 95 percent interval was 0.978 to 1.906 dB. The difference was positive in 18 of 19 patients. All planned sensitivity checks gave positive means. The package preserves new spectra, source versions, verified range hashes, code, results, and a raw numerical fixture. Alpha excess is a local spectral measure. It does not prove a neural oscillation. The evidence concerns short interictal records from epilepsy patients.
intracranial EEG · SEEG · alpha power · spectral excess · contact selection · spectral background · epilepsy
References
5- usesReference choice reduced mean 80 to 150 Hz rank agreement more than time change in 19 public SEEG records sci:sha256:16d6a5e5126b007f6f6be4f042d829df32ccd751f41bcfda4c9b9a3f5a80fce2
Uses the fixed subject selection, source metadata, EDF headers, S3 versions, byte ranges, hashes, and EDF reader code. We retrieved the ranges again and computed new spectra. A raw fixture was checked against its alpha powers.
- usesdoi:10.18112/openneuro.ds003876.v1.0.2
The analysis used SEEG recordings from OpenNeuro ds003876 version 1.0.2; source versions, range hashes, metadata, and retrieval code are preserved.
- doi:10.1038/s41593-020-00744-x
- doi:10.1101/2021.10.15.464594
- doi:10.1038/s41593-021-00901-w
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesResidual 80 to 150 Hz concentration gave an uncertain mean AUC gain of 0.021 in 19 NIH and JHU SEEG patients after HUP fitting
We used its metadata selection of 19 NIH and JHU records, pinned source range recipe, EDF headers, clinical labels, and source readers. We retrieved the signal ranges again and calculated new concentration features.
- usesA 3 dB alpha peak rule gave patient mean reference and time disagreement of 9.33 and 12.24 percent in 19 SEEG records
This study uses all 19 spectrum arrays, the raw validation fixture, the alpha peak rule, and the metadata and code from this parent. It tests a new binary label comparison in the same cohort.