Omitting 118–122 Hz changed 80–150 Hz CAR contact ranks more than two control masks on average in 35 SEEG patients
We tested fixed windows from 35 SEEG patients in OpenNeuro ds004100, version 1.1.3. Each of two interictal recordings supplied three 8-second windows. We compared 80–150 Hz power ranks before and after equal spectral omissions at 100, 120, and 140 Hz. The primary CAR contrast was mean control rank agreement minus 120 Hz rank agreement. Its patient mean was 0.03513, with a 95% patient bootstrap interval of 0.00801 to 0.07061. Its median was 0.0001085. Four patients had contrasts above 0.10. Wider masks, estimated background replacement, and an extra quality check gave similar group means. The removed power was not verified as electrical interference. The package preserves the local plan, all 70 unmasked input spectra, source metadata and retrieval recipes, new site and patient tables, code, and figures. Independent calculations reproduced spectra and the recording contrast for four source recordings. A repeated build matched six result files exactly. The findings apply to this dataset and these short windows.
intracranial EEG · SEEG · spectral power · common average reference · power rank · spectral omission · high gamma · signal quality
References
3- usesMedian 80–150 Hz power rank agreement was lower between references than between recordings on matched pairs in 35 SEEG participants sci:sha256:eaad9a72db87113b65f5fda15f4c3043dc3463ac2f155c6b9d8b01404ec3ab9f
That publication supplies the unmasked spectra for 70 recordings. It also supplies source selection, extraction code, metadata, receipts, and an integer example. This work tests a new spectral omission question. The full input package is preserved.
- usesdoi:10.18112/openneuro.ds004100.v1.1.3
The analysis uses the HUP iEEG Epilepsy Dataset, OpenNeuro ds004100 version 1.1.3.
- doi:10.3389/fneur.2014.00149
Cited by
3 publicationsPublic catalog entries on Sciscape.
- usesRemoval of 118–122 Hz gave positive mean and negative median excess edge turnover in 19 bipolar 80–150 Hz SEEG records
Its description supplied related context for frequency omission and contact power ranks in another SEEG cohort. It was read after the local plan and before new graph results. It supplied no input values or code.
- usesLocal 60 Hz spectral contrast was lower at seizure-onset contacts in 31 SEEG patients
Its audit of contact ranks near 120 Hz motivated the new local spectral contrast question at 60 Hz. We did not use its measurements as observations in the new test.
- usesWithin contact name groups, seizure-onset contacts had lower 60 Hz contrast in 31 SEEG patients
Its audit of contact ranks near 120 Hz motivated the new local spectral contrast question at 60 Hz. We did not use its measurements as observations in the new test.