Removing contact name groups from the common average reference changed 80 to 150 Hz power ranks more than matched random removal in two minutes from each of 19 SEEG records
In 19 interictal SEEG records from OpenNeuro ds003876 version 1.0.2, removal of contact name groups from the common average reference produced greater 80 to 150 Hz power rank loss than matched random removal of the same number of contacts. Mean excess rank loss was 0.002976 (participant bootstrap 95% interval 0.001403 to 0.004815); all 19 participant estimates were positive, and the absolute effect was small. Group effects varied, and time variation between two 60-second segments was larger. Name groups are imperfect shaft proxies, and the sample is not representative of all patients or brain regions. The result concerns within-record ranks in two interictal minutes and does not establish clinical importance or a best reference.
stereo-electroencephalography · common average reference · high-frequency power · rank stability · contact removal · intracranial EEG · covariance matrices
References
7- usesReference choice reduced mean 80 to 150 Hz rank agreement more than time change in 19 public SEEG records sci:sha256:16d6a5e5126b007f6f6be4f042d829df32ccd751f41bcfda4c9b9a3f5a80fce2
We used its record selection, metadata, source version recipe, contact mapping, EDF range reader, and CAR power checks. We retrieved the source signal again and calculated new covariance data and matched removal results. The cohort is shared.
- usesdoi:10.18112/openneuro.ds003876.v1.0.2
Source dataset, version 1.0.2.
- doi:10.1101/2021.10.15.464594
- doi:10.1038/s41593-021-00901-w
- doi:10.1016/j.neuroimage.2018.08.020
- doi:10.1093/braincomms%2Ffcae165
- doi:10.1093/brain%2Fawac300
Cited by
2 publicationsPublic catalog entries on Sciscape.
- usesRemoving contact name groups from the common average reference increased 80 to <150 Hz strong-edge turnover more than matched random removal in 19 SEEG records
This work supplied the 19 band covariance files, source metadata, and raw retrieval recipe. We rebuilt all files from new raw downloads and calculated new correlation edge results on the same cohort.
- usesContact name group removal from the average reference gave greater mean high gamma correlation edge turnover than matched random removal in 19 SEEG records
We used the 19 covariance arrays, baseline powers, selected records, source metadata, and range retrieval code. We rebuilt all covariance files from fresh pinned raw ranges. We tested matched reference effects on correlation edge turnover in the same cohort.